diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..b75f125
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,18 @@
+.PHONY: clean
+
+CFLAGS  := -std=c++0x
+LD      := g++
+LDLIBS  := ${LDLIBS} -lrdmacm -libverbs -lpthread ./get_clock.h ./get_clock.c
+
+APPS    := server client
+
+all: ${APPS}
+
+client.o: client.cc
+	${LD} ${CFLAGS} -c client.cc
+
+client: client.o
+	${LD} ${CFLAGS} -o $@ $^ ${LDLIBS}
+
+clean:
+	rm -f ${APPS}
diff --git a/client.cc b/client.cc
new file mode 100644
index 0000000..ac4be76
--- /dev/null
+++ b/client.cc
@@ -0,0 +1,375 @@
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <rdma/rdma_cma.h>
+#include<iostream>
+#include "get_clock.h"
+
+#define TEST_NZ(x) do { if ( (x)) die("error: " #x " failed (returned non-zero)." ); } while (0)
+#define TEST_Z(x)  do { if (!(x)) die("error: " #x " failed (returned zero/null)."); } while (0)
+using namespace std;
+
+const int BUFFER_SIZE = 1000;
+const int TIMEOUT_IN_MS = 500; /* ms */
+
+struct context {
+  struct ibv_context *ctx;
+  struct ibv_pd *pd;
+  struct ibv_cq *cq;
+  struct ibv_comp_channel *comp_channel;
+
+  pthread_t cq_poller_thread;
+};
+
+struct connection {
+  struct rdma_cm_id *id;
+  struct ibv_qp *qp;
+
+  struct ibv_mr *recv_mr;
+  struct ibv_mr *send_mr;
+
+  char *recv_region;
+  char *send_region;
+
+  int num_completions;
+};
+
+static void die(const char *reason);
+
+static void build_context(struct ibv_context *verbs);
+static void build_qp_attr(struct ibv_qp_init_attr *qp_attr);
+static void * poll_cq(void *);
+static void post_receives(struct connection *conn);
+static void register_memory(struct connection *conn);
+
+static int on_addr_resolved(struct rdma_cm_id *id);
+static void on_completion(struct ibv_wc *wc);
+void * on_connection(void *arg);
+static int on_disconnect(struct rdma_cm_id *id);
+static int on_event(struct rdma_cm_event *event);
+static int on_route_resolved(struct rdma_cm_id *id);
+
+static struct context *s_ctx = NULL;
+struct rdma_cm_id *conn_id= NULL;
+struct connection *conn_ctx = NULL;
+
+int main(int argc, char **argv)
+{
+  struct addrinfo *addr;
+  struct rdma_cm_event *event = NULL;
+//  struct rdma_cm_id *conn= NULL;
+  struct rdma_event_channel *ec = NULL;
+  char *port = "22222";
+  int thread_num = stoi(argv[2]);
+  if (argc != 3 || thread_num < 1)
+    die("usage: client <server-address> <thread-num>, thread-num > 0");
+
+  TEST_NZ(getaddrinfo(argv[1], port, NULL, &addr));
+
+  TEST_Z(ec = rdma_create_event_channel());
+  TEST_NZ(rdma_create_id(ec, &conn_id, NULL, RDMA_PS_TCP));
+  TEST_NZ(rdma_resolve_addr(conn_id, NULL, addr->ai_addr, TIMEOUT_IN_MS));
+
+  freeaddrinfo(addr);
+
+  while (rdma_get_cm_event(ec, &event) == 0) {
+    struct rdma_cm_event event_copy;
+
+    memcpy(&event_copy, event, sizeof(*event));
+    rdma_ack_cm_event(event);
+
+    if (on_event(&event_copy))
+      break;
+  }
+
+  conn_ctx = (struct connection *)(conn_id->context);
+
+  pthread_t *t = new pthread_t[thread_num];
+  char **filename = new char*[thread_num];
+  void *status;
+
+  for(int i = 0; i < thread_num; i++)
+  {
+    filename[i] = new char[20];
+    snprintf(filename[i], 20, "./out/out%d.list", i + 1);
+    pthread_create(&t[i], NULL, on_connection, filename[i]);
+  }
+
+  for(int i = 0; i < thread_num; i++)
+    pthread_join(t[i], &status);
+
+  delete []t;
+  for(int i = 0; i < thread_num; i++)
+    delete []filename[i];
+
+  delete []filename;
+  rdma_destroy_event_channel(ec);
+
+  return 0;
+}
+
+void die(const char *reason)
+{
+  fprintf(stderr, "%s\n", reason);
+  exit(EXIT_FAILURE);
+}
+
+void build_context(struct ibv_context *verbs)
+{
+  if (s_ctx) {
+    if (s_ctx->ctx != verbs)
+      die("cannot handle events in more than one context.");
+
+    return;
+  }
+
+  s_ctx = (struct context *)malloc(sizeof(struct context));
+
+  s_ctx->ctx = verbs;
+
+  TEST_Z(s_ctx->pd = ibv_alloc_pd(s_ctx->ctx));
+  TEST_Z(s_ctx->comp_channel = ibv_create_comp_channel(s_ctx->ctx));
+  TEST_Z(s_ctx->cq = ibv_create_cq(s_ctx->ctx, 40, NULL, s_ctx->comp_channel, 0)); /* cqe=10 is arbitrary */
+  TEST_NZ(ibv_req_notify_cq(s_ctx->cq, 0));
+
+//  TEST_NZ(pthread_create(&s_ctx->cq_poller_thread, NULL, poll_cq, NULL));
+}
+
+void build_qp_attr(struct ibv_qp_init_attr *qp_attr)
+{
+  memset(qp_attr, 0, sizeof(*qp_attr));
+
+  qp_attr->send_cq = s_ctx->cq;
+  qp_attr->recv_cq = s_ctx->cq;
+  qp_attr->qp_type = IBV_QPT_RC;
+
+  qp_attr->cap.max_send_wr = 1000;
+  qp_attr->cap.max_recv_wr = 1000;
+  qp_attr->cap.max_send_sge = 1;
+  qp_attr->cap.max_recv_sge = 1;
+}
+
+void * poll_cq(void *ctx)
+{
+  struct ibv_cq *cq;
+  struct ibv_wc wc;
+
+  while (1) {
+    TEST_NZ(ibv_get_cq_event(s_ctx->comp_channel, &cq, &ctx));
+    ibv_ack_cq_events(cq, 1);
+    TEST_NZ(ibv_req_notify_cq(cq, 0));
+
+    while (ibv_poll_cq(cq, 1, &wc))
+      on_completion(&wc);
+  }
+
+  return NULL;
+}
+
+void post_receives(struct connection *conn)
+{
+  struct ibv_recv_wr wr, *bad_wr = NULL;
+  struct ibv_sge sge;
+
+  wr.wr_id = (uintptr_t)conn;
+  wr.next = NULL;
+  wr.sg_list = &sge;
+  wr.num_sge = 1;
+
+  sge.addr = (uintptr_t)conn->recv_region;
+  sge.length = BUFFER_SIZE;
+  sge.lkey = conn->recv_mr->lkey;
+
+  TEST_NZ(ibv_post_recv(conn->qp, &wr, &bad_wr));
+}
+
+void register_memory(struct connection *conn)
+{
+  conn->send_region = (char *)malloc(BUFFER_SIZE);
+  conn->recv_region = (char *)malloc(BUFFER_SIZE);
+
+  TEST_Z(conn->send_mr = ibv_reg_mr(
+    s_ctx->pd, 
+    conn->send_region, 
+    BUFFER_SIZE, 
+    IBV_ACCESS_LOCAL_WRITE | IBV_ACCESS_REMOTE_WRITE));
+
+  TEST_Z(conn->recv_mr = ibv_reg_mr(
+    s_ctx->pd, 
+    conn->recv_region, 
+    BUFFER_SIZE, 
+    IBV_ACCESS_LOCAL_WRITE | IBV_ACCESS_REMOTE_WRITE));
+}
+
+int on_addr_resolved(struct rdma_cm_id *id)
+{
+  struct ibv_qp_init_attr qp_attr;
+  struct connection *conn;
+
+  printf("address resolved.\n");
+
+  build_context(id->verbs);
+  build_qp_attr(&qp_attr);
+ 
+  TEST_NZ(rdma_create_qp(id, s_ctx->pd, &qp_attr));
+
+  id->context = conn = (struct connection *)malloc(sizeof(struct connection));
+ 
+  conn->id = id;
+  conn->qp = id->qp;
+  conn->num_completions = 0;
+
+  register_memory(conn);
+  post_receives(conn);
+  
+  TEST_NZ(rdma_resolve_route(id, TIMEOUT_IN_MS));
+
+  return 0;
+}
+
+void on_completion(struct ibv_wc *wc)
+{
+  struct connection *conn = (struct connection *)(uintptr_t)wc->wr_id;
+
+  if (wc->status != IBV_WC_SUCCESS)
+    die("on_completion: status is not IBV_WC_SUCCESS.");
+
+  if (wc->opcode & IBV_WC_RECV)
+    printf("received message: %s\n", conn->recv_region);
+  else if (wc->opcode == IBV_WC_SEND);
+//    printf("send completed successfully.\n");
+  else
+    die("on_completion: completion isn't a send or a receive.");
+
+//  if (++conn->num_completions == 2)
+//    rdma_disconnect(conn->id);
+}
+
+void print_report(int iters, cycles_t *tposted, cycles_t *tcompleted, char *name)
+{
+  int i;
+  double cpu_mhz = get_cpu_mhz(1);
+  double lat_us;
+  FILE *f = fopen(name, "w");
+  fprintf(f, "iter\t\tLatency\n");
+  for(i = 0; i < iters; i++)
+  {
+    lat_us = (double)(tcompleted[i] - tposted[i]) / cpu_mhz;
+    fprintf(f, "%ld\t\t%.2f\n", i + 1, lat_us);
+  }
+  double total_lat = (double)(tcompleted[iters-1] - tposted[0]) / cpu_mhz;
+  fprintf(f, "\n%.2f\n", total_lat);
+
+  fclose(f);
+}
+
+
+void * on_connection(void *arg)
+{
+//  struct connection *conn = (struct connection *)(conn_id->context);
+  struct ibv_send_wr wr, *bad_wr = NULL;
+  struct ibv_sge sge;
+  struct ibv_wc wc;
+  snprintf(conn_ctx->send_region, BUFFER_SIZE, "message from active/client side with pid %d", getpid());
+
+  printf("connected. posting send...\n");
+
+  memset(&wr, 0, sizeof(wr));
+
+  wr.wr_id = (uintptr_t)conn_ctx;
+  wr.opcode = IBV_WR_SEND;
+  wr.sg_list = &sge;
+  wr.num_sge = 1;
+  wr.send_flags = IBV_SEND_SIGNALED;
+
+  sge.addr = (uintptr_t)conn_ctx->send_region;
+  sge.length = BUFFER_SIZE;
+  sge.lkey = conn_ctx->send_mr->lkey;
+
+  int ne = 0, iters = 1000;
+  cycles_t *c1, *c2;
+  c1 = (cycles_t *)malloc(iters * sizeof *c1);
+  pthread_t tid = pthread_self();
+
+  if (!c1)
+  {
+    perror("malloc");
+  }
+
+  c2 = (cycles_t *)malloc(iters * sizeof *c2);
+
+  if (!c2)
+  {
+    perror("malloc");
+  }
+
+  for(int i = 0; i < iters; i++)
+  {
+    c1[i] = get_cycles();
+    TEST_NZ(ibv_post_send(conn_ctx->qp, &wr, &bad_wr));
+    do {
+       ne = ibv_poll_cq(s_ctx->cq, 1, &wc);
+    } while (ne == 0); 
+    c2[i] = get_cycles();
+    on_completion(&wc);
+//    cout << endl << (unsigned int)tid << endl;
+  }
+
+  char *filename = (char *)arg;
+  print_report(iters, c1, c2, filename);
+
+}
+
+int on_disconnect(struct rdma_cm_id *id)
+{
+  struct connection *conn = (struct connection *)id->context;
+
+  printf("disconnected.\n");
+
+  rdma_destroy_qp(id);
+
+  ibv_dereg_mr(conn->send_mr);
+  ibv_dereg_mr(conn->recv_mr);
+
+  free(conn->send_region);
+  free(conn->recv_region);
+
+  free(conn);
+
+  rdma_destroy_id(id);
+
+  return 1; /* exit event loop */
+}
+
+int on_event(struct rdma_cm_event *event)
+{
+  int r = 0;
+
+  if (event->event == RDMA_CM_EVENT_ADDR_RESOLVED)
+    r = on_addr_resolved(event->id);
+  else if (event->event == RDMA_CM_EVENT_ROUTE_RESOLVED)
+    r = on_route_resolved(event->id);
+  else if (event->event == RDMA_CM_EVENT_ESTABLISHED)
+    r = 1;
+//    r = on_connection(event->id->context);
+  else if (event->event == RDMA_CM_EVENT_DISCONNECTED)
+    r = on_disconnect(event->id);
+  else
+    die("on_event: unknown event.");
+
+  return r;
+}
+
+int on_route_resolved(struct rdma_cm_id *id)
+{
+  struct rdma_conn_param cm_params;
+
+  printf("route resolved.\n");
+
+  memset(&cm_params, 0, sizeof(cm_params));
+  TEST_NZ(rdma_connect(id, &cm_params));
+  
+  return 0;
+}
diff --git a/get_clock.c b/get_clock.c
new file mode 100644
index 0000000..91aaf72
--- /dev/null
+++ b/get_clock.c
@@ -0,0 +1,234 @@
+/*
+ * Copyright (c) 2005 Mellanox Technologies Ltd.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id$
+ *
+ * Author: Michael S. Tsirkin <mst@mellanox.co.il>
+ */
+
+/* #define DEBUG 1 */
+/* #define DEBUG_DATA 1 */
+/* #define GET_CPU_MHZ_FROM_PROC 1 */
+
+/* For gettimeofday */
+#define _BSD_SOURCE
+#include <sys/time.h>
+
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include "get_clock.h"
+
+#ifndef DEBUG
+#define DEBUG 0
+#endif
+#ifndef DEBUG_DATA
+#define DEBUG_DATA 0
+#endif
+
+#define MEASUREMENTS 200
+#define USECSTEP 10
+#define USECSTART 100
+
+/*
+   Use linear regression to calculate cycles per microsecond.
+http://en.wikipedia.org/wiki/Linear_regression#Parameter_estimation
+*/
+static double sample_get_cpu_mhz(void)
+{
+	struct timeval tv1, tv2;
+	cycles_t start;
+	double sx = 0, sy = 0, sxx = 0, syy = 0, sxy = 0;
+	double tx, ty;
+	int i;
+
+	/* Regression: y = a + b x */
+	long x[MEASUREMENTS];
+	cycles_t y[MEASUREMENTS];
+	double a; /* system call overhead in cycles */
+	double b; /* cycles per microsecond */
+	double r_2;
+
+	for (i = 0; i < MEASUREMENTS; ++i) {
+		start = get_cycles();
+
+		if (gettimeofday(&tv1, NULL)) {
+			fprintf(stderr, "gettimeofday failed.\n");
+			return 0;
+		}
+
+		do {
+			if (gettimeofday(&tv2, NULL)) {
+				fprintf(stderr, "gettimeofday failed.\n");
+				return 0;
+			}
+		} while ((tv2.tv_sec - tv1.tv_sec) * 1000000 +
+				(tv2.tv_usec - tv1.tv_usec) < USECSTART + i * USECSTEP);
+
+		x[i] = (tv2.tv_sec - tv1.tv_sec) * 1000000 +
+			tv2.tv_usec - tv1.tv_usec;
+		y[i] = get_cycles() - start;
+		if (DEBUG_DATA)
+			fprintf(stderr, "x=%ld y=%Ld\n", x[i], (long long)y[i]);
+	}
+
+	for (i = 0; i < MEASUREMENTS; ++i) {
+		tx = x[i];
+		ty = y[i];
+		sx += tx;
+		sy += ty;
+		sxx += tx * tx;
+		syy += ty * ty;
+		sxy += tx * ty;
+	}
+
+	b = (MEASUREMENTS * sxy - sx * sy) / (MEASUREMENTS * sxx - sx * sx);
+	a = (sy - b * sx) / MEASUREMENTS;
+
+	if (DEBUG)
+		fprintf(stderr, "a = %g\n", a);
+	if (DEBUG)
+		fprintf(stderr, "b = %g\n", b);
+	if (DEBUG)
+		fprintf(stderr, "a / b = %g\n", a / b);
+	r_2 = (MEASUREMENTS * sxy - sx * sy) * (MEASUREMENTS * sxy - sx * sy) /
+		(MEASUREMENTS * sxx - sx * sx) /
+		(MEASUREMENTS * syy - sy * sy);
+
+	if (DEBUG)
+		fprintf(stderr, "r^2 = %g\n", r_2);
+	if (r_2 < 0.9) {
+		fprintf(stderr,"Correlation coefficient r^2: %g < 0.9\n", r_2);
+		return 0;
+	}
+
+	return b;
+}
+
+#if !defined(__s390x__) && !defined(__s390__)
+static double proc_get_cpu_mhz(int no_cpu_freq_warn)
+{
+	FILE* f;
+	char buf[256];
+	double mhz = 0.0;
+	int print_flag = 0;
+	double delta;
+
+	#if defined(__FreeBSD__)
+	f = popen("/sbin/sysctl hw.clockrate","r");
+	#else
+	f = fopen("/proc/cpuinfo","r");
+	#endif
+
+	if (!f)
+		return 0.0;
+	while(fgets(buf, sizeof(buf), f)) {
+		double m;
+		int rc;
+
+		#if defined (__ia64__)
+		/* Use the ITC frequency on IA64 */
+		rc = sscanf(buf, "itc MHz : %lf", &m);
+		#elif defined (__PPC__) || defined (__PPC64__)
+		/* PPC has a different format as well */
+		rc = sscanf(buf, "clock : %lf", &m);
+		#elif defined (__sparc__) && defined (__arch64__)
+		/*
+		 * on sparc the /proc/cpuinfo lines that hold
+		 * the cpu freq in HZ are as follow:
+		 * Cpu{cpu-num}ClkTck      : 00000000a9beeee4
+		 */
+		char *s;
+
+		s = strstr(buf, "ClkTck\t: ");
+		if (!s)
+			continue;
+		s += (strlen("ClkTck\t: ") - strlen("0x"));
+		strncpy(s, "0x", strlen("0x"));
+		rc = sscanf(s, "%lf", &m);
+		m /= 1000000;
+		#else
+		#if defined (__FreeBSD__)
+		rc = sscanf(buf, "hw.clockrate: %lf", &m);
+		#else
+		rc = sscanf(buf, "cpu MHz : %lf", &m);
+		#endif
+		#endif
+
+		if (rc != 1)
+			continue;
+
+		if (mhz == 0.0) {
+			mhz = m;
+			continue;
+		}
+		delta = mhz > m ? mhz - m : m - mhz;
+		if ((delta / mhz > 0.02) && (print_flag ==0)) {
+			print_flag = 1;
+			if (!no_cpu_freq_warn) {
+				fprintf(stderr, "Conflicting CPU frequency values"
+						" detected: %lf != %lf. CPU Frequency is not max.\n", mhz, m);
+			}
+			continue;
+		}
+	}
+
+#if defined(__FreeBSD__)
+	pclose(f);
+#else
+	fclose(f);
+#endif
+	return mhz;
+}
+#endif
+
+double get_cpu_mhz(int no_cpu_freq_warn)
+{
+	#if defined(__s390x__) || defined(__s390__)
+	return sample_get_cpu_mhz();
+	#else
+	double sample, proc, delta;
+	sample = sample_get_cpu_mhz();
+	proc = proc_get_cpu_mhz(no_cpu_freq_warn);
+	#ifdef __aarch64__
+	if (proc < 1)
+		proc = sample;
+	#endif
+	if (!proc || !sample)
+		return 0;
+
+	delta = proc > sample ? proc - sample : sample - proc;
+	if (delta / proc > 0.02) {
+		return sample;
+	}
+	return proc;
+#endif
+}
diff --git a/get_clock.h b/get_clock.h
new file mode 100644
index 0000000..dacbcd0
--- /dev/null
+++ b/get_clock.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2005 Mellanox Technologies Ltd.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id$
+ *
+ * Author: Michael S. Tsirkin <mst@mellanox.co.il>
+ */
+
+#ifndef GET_CLOCK_H
+#define GET_CLOCK_H
+
+#if defined (__x86_64__) || defined(__i386__)
+/* Note: only x86 CPUs which have rdtsc instruction are supported. */
+typedef unsigned long long cycles_t;
+static inline cycles_t get_cycles()
+{
+	unsigned low, high;
+	unsigned long long val;
+	asm volatile ("rdtsc" : "=a" (low), "=d" (high));
+	val = high;
+	val = (val << 32) | low;
+	return val;
+}
+#elif defined(__PPC__) || defined(__PPC64__)
+/* Note: only PPC CPUs which have mftb instruction are supported. */
+/* PPC64 has mftb */
+typedef unsigned long cycles_t;
+static inline cycles_t get_cycles()
+{
+	cycles_t ret;
+
+	__asm__ __volatile__ ("\n\t isync" "\n\t mftb %0" : "=r"(ret));
+	return ret;
+}
+#elif defined(__ia64__)
+/* Itanium2 and up has ar.itc (Itanium1 has errata) */
+typedef unsigned long cycles_t;
+static inline cycles_t get_cycles()
+{
+	cycles_t ret;
+
+	asm volatile ("mov %0=ar.itc" : "=r" (ret));
+	return ret;
+}
+#elif defined(__ARM_ARCH_7A__)
+typedef unsigned long long cycles_t;
+static inline cycles_t get_cycles(void)
+{
+	cycles_t        clk;
+	asm volatile("mrrc p15, 0, %Q0, %R0, c14" : "=r" (clk));
+	return clk;
+}
+#elif defined(__s390x__) || defined(__s390__)
+typedef unsigned long long cycles_t;
+static inline cycles_t get_cycles(void)
+{
+	cycles_t        clk;
+	asm volatile("stck %0" : "=Q" (clk) : : "cc");
+	return clk >> 2;
+}
+#elif defined(__sparc__) && defined(__arch64__)
+typedef unsigned long long cycles_t;
+static inline cycles_t get_cycles(void)
+{
+	cycles_t v;
+	asm volatile ("rd %%tick, %0" : "=r" (v) : );
+	return v;
+}
+#elif defined(__aarch64__)
+
+typedef unsigned long cycles_t;
+static inline cycles_t get_cycles()
+{
+	cycles_t cval;
+	asm volatile("isb" : : : "memory");
+	asm volatile("mrs %0, cntvct_el0" : "=r" (cval));
+	return cval;
+}
+
+#else
+#warning get_cycles not implemented for this architecture: attempt asm/timex.h
+#include <asm/timex.h>
+#endif
+
+extern double get_cpu_mhz(int);
+
+#endif
diff --git a/out/out1.list b/out/out1.list
new file mode 100644
index 0000000..cd695f7
--- /dev/null
+++ b/out/out1.list
@@ -0,0 +1,1003 @@
+iter		Latency
+1		5.68
+2		7.78
+3		5.41
+4		5.27
+5		22.21
+6		20.69
+7		4.78
+8		12.43
+9		17.46
+10		2.34
+11		5.96
+12		2.29
+13		23.23
+14		16.59
+15		7.68
+16		3.53
+17		2.38
+18		7.40
+19		7.50
+20		9.68
+21		14.77
+22		9.51
+23		4.64
+24		5.65
+25		5.07
+26		14.51
+27		1.99
+28		2.73
+29		4.86
+30		4.61
+31		10.07
+32		2.47
+33		8.97
+34		4.89
+35		2.59
+36		5.02
+37		4.27
+38		2.85
+39		10.37
+40		10.82
+41		6.88
+42		2.35
+43		5.04
+44		4.62
+45		17.10
+46		4.93
+47		1.85
+48		2.42
+49		7.49
+50		4.53
+51		10.16
+52		5.05
+53		7.17
+54		2.77
+55		2.12
+56		26.58
+57		2.59
+58		12.67
+59		4.83
+60		2.94
+61		3.52
+62		11.79
+63		9.54
+64		2.08
+65		12.50
+66		5.10
+67		2.28
+68		2.06
+69		17.31
+70		7.48
+71		4.79
+72		10.88
+73		7.18
+74		5.08
+75		5.00
+76		4.64
+77		8.25
+78		4.98
+79		1.84
+80		5.01
+81		2.82
+82		9.62
+83		2.44
+84		4.92
+85		4.68
+86		2.59
+87		14.12
+88		2.23
+89		7.81
+90		5.04
+91		6.45
+92		2.32
+93		9.58
+94		9.31
+95		16.56
+96		2.11
+97		8.43
+98		2.52
+99		5.67
+100		2.30
+101		2.76
+102		2.02
+103		5.15
+104		6.81
+105		2.58
+106		4.62
+107		1.98
+108		4.91
+109		17.12
+110		2.54
+111		7.53
+112		4.63
+113		2.34
+114		2.09
+115		2.55
+116		2.41
+117		7.71
+118		5.29
+119		5.76
+120		5.16
+121		14.65
+122		4.57
+123		5.14
+124		2.52
+125		4.59
+126		4.59
+127		4.45
+128		2.28
+129		2.40
+130		5.27
+131		10.04
+132		21.84
+133		2.27
+134		2.07
+135		7.48
+136		6.79
+137		4.73
+138		6.42
+139		5.03
+140		6.00
+141		8.53
+142		4.60
+143		2.97
+144		12.38
+145		5.15
+146		2.61
+147		7.35
+148		12.18
+149		4.60
+150		2.65
+151		1.98
+152		4.95
+153		10.07
+154		4.55
+155		2.24
+156		2.34
+157		9.30
+158		2.24
+159		2.27
+160		7.30
+161		2.67
+162		2.45
+163		2.74
+164		2.57
+165		14.29
+166		2.69
+167		2.05
+168		10.02
+169		4.36
+170		9.83
+171		16.90
+172		2.75
+173		2.99
+174		4.61
+175		2.84
+176		19.64
+177		26.92
+178		2.34
+179		11.97
+180		2.21
+181		19.44
+182		8.28
+183		5.12
+184		7.92
+185		4.70
+186		2.05
+187		17.49
+188		17.72
+189		11.64
+190		2.47
+191		16.12
+192		17.20
+193		6.65
+194		2.19
+195		5.25
+196		4.42
+197		4.40
+198		18.82
+199		2.72
+200		4.44
+201		3.54
+202		2.50
+203		13.56
+204		6.84
+205		2.60
+206		3.33
+207		12.45
+208		4.95
+209		3.98
+210		2.70
+211		11.55
+212		9.31
+213		7.57
+214		2.25
+215		19.46
+216		7.92
+217		12.73
+218		4.94
+219		2.13
+220		1.93
+221		14.58
+222		12.43
+223		12.57
+224		9.82
+225		18.80
+226		4.82
+227		15.86
+228		16.81
+229		8.55
+230		2.70
+231		17.50
+232		2.59
+233		4.90
+234		2.34
+235		2.70
+236		5.06
+237		4.76
+238		5.06
+239		17.55
+240		2.30
+241		8.05
+242		2.41
+243		3.20
+244		7.34
+245		2.76
+246		4.79
+247		14.31
+248		7.42
+249		19.20
+250		1.82
+251		7.01
+252		6.61
+253		7.32
+254		5.35
+255		6.41
+256		7.60
+257		3.34
+258		2.79
+259		12.23
+260		7.03
+261		2.17
+262		10.65
+263		5.01
+264		6.73
+265		2.61
+266		10.15
+267		4.78
+268		7.14
+269		4.62
+270		2.31
+271		2.36
+272		21.12
+273		2.29
+274		2.25
+275		3.23
+276		7.00
+277		5.42
+278		45.22
+279		21.79
+280		4.60
+281		11.93
+282		2.32
+283		2.01
+284		2.59
+285		2.15
+286		6.86
+287		5.08
+288		11.09
+289		20.05
+290		1.99
+291		2.50
+292		7.39
+293		2.39
+294		1.98
+295		8.08
+296		2.33
+297		7.14
+298		1.87
+299		12.36
+300		7.18
+301		4.52
+302		10.58
+303		2.32
+304		9.76
+305		7.22
+306		2.24
+307		2.53
+308		1.96
+309		21.70
+310		4.45
+311		14.42
+312		2.69
+313		1.86
+314		2.17
+315		5.53
+316		4.97
+317		3.50
+318		9.84
+319		7.07
+320		10.38
+321		24.01
+322		2.40
+323		9.79
+324		2.47
+325		10.82
+326		10.42
+327		2.31
+328		2.35
+329		12.55
+330		11.84
+331		1.91
+332		9.74
+333		17.66
+334		12.05
+335		3.72
+336		2.03
+337		12.43
+338		4.95
+339		2.39
+340		2.52
+341		4.54
+342		23.90
+343		13.51
+344		5.89
+345		10.15
+346		2.46
+347		7.53
+348		2.32
+349		7.86
+350		2.08
+351		17.46
+352		4.87
+353		6.72
+354		2.83
+355		2.51
+356		2.94
+357		1.33
+358		3.58
+359		1.37
+360		1.25
+361		6.32
+362		1.03
+363		5.19
+364		1.10
+365		2.61
+366		6.09
+367		1.39
+368		1.60
+369		5.31
+370		3.29
+371		1.41
+372		3.36
+373		3.21
+374		2.37
+375		3.93
+376		1.48
+377		2.46
+378		3.96
+379		3.49
+380		3.21
+381		5.75
+382		0.81
+383		1.23
+384		6.51
+385		3.25
+386		3.73
+387		4.24
+388		1.55
+389		1.03
+390		2.19
+391		7.92
+392		1.47
+393		1.70
+394		1.58
+395		2.42
+396		2.27
+397		4.87
+398		1.38
+399		3.01
+400		3.29
+401		4.61
+402		2.58
+403		4.03
+404		3.70
+405		1.14
+406		2.17
+407		6.54
+408		1.13
+409		2.18
+410		0.92
+411		3.68
+412		3.27
+413		3.18
+414		3.16
+415		8.42
+416		2.12
+417		5.70
+418		3.10
+419		3.06
+420		3.19
+421		1.71
+422		0.82
+423		2.27
+424		1.78
+425		4.75
+426		1.78
+427		2.62
+428		9.87
+429		6.25
+430		1.53
+431		1.30
+432		1.73
+433		3.97
+434		3.24
+435		6.82
+436		3.62
+437		1.54
+438		0.87
+439		11.07
+440		7.10
+441		2.40
+442		4.06
+443		3.52
+444		3.11
+445		2.09
+446		3.22
+447		2.17
+448		2.17
+449		3.20
+450		1.45
+451		1.67
+452		2.17
+453		6.73
+454		5.29
+455		6.37
+456		2.33
+457		11.09
+458		3.10
+459		2.47
+460		4.85
+461		1.32
+462		1.04
+463		2.40
+464		1.79
+465		2.39
+466		5.08
+467		2.15
+468		2.10
+469		0.93
+470		4.65
+471		3.33
+472		3.37
+473		3.80
+474		6.42
+475		3.32
+476		3.21
+477		1.97
+478		4.35
+479		2.11
+480		3.21
+481		3.41
+482		2.86
+483		2.73
+484		1.16
+485		3.16
+486		2.05
+487		1.37
+488		2.81
+489		5.46
+490		9.51
+491		0.88
+492		1.45
+493		3.19
+494		6.33
+495		5.38
+496		2.09
+497		2.09
+498		13.10
+499		2.21
+500		1.85
+501		5.60
+502		2.37
+503		4.25
+504		7.47
+505		4.19
+506		1.49
+507		1.59
+508		1.39
+509		2.44
+510		3.29
+511		7.31
+512		2.27
+513		10.81
+514		1.39
+515		1.83
+516		1.04
+517		3.09
+518		4.85
+519		3.30
+520		3.35
+521		2.04
+522		2.44
+523		3.59
+524		1.78
+525		1.33
+526		0.85
+527		14.79
+528		3.30
+529		3.18
+530		0.64
+531		3.33
+532		2.23
+533		8.39
+534		2.40
+535		6.37
+536		3.20
+537		2.45
+538		4.32
+539		3.24
+540		1.41
+541		1.79
+542		3.03
+543		3.62
+544		2.55
+545		4.02
+546		3.27
+547		2.19
+548		2.08
+549		3.15
+550		3.28
+551		0.91
+552		3.12
+553		3.31
+554		2.26
+555		4.19
+556		3.43
+557		0.90
+558		0.95
+559		1.01
+560		3.34
+561		4.44
+562		3.26
+563		1.06
+564		3.10
+565		6.43
+566		5.30
+567		3.19
+568		0.99
+569		8.59
+570		1.00
+571		4.91
+572		1.05
+573		3.09
+574		2.14
+575		3.11
+576		1.09
+577		3.08
+578		3.20
+579		3.22
+580		4.57
+581		9.76
+582		5.97
+583		10.84
+584		1.05
+585		3.17
+586		3.26
+587		0.93
+588		2.15
+589		0.91
+590		4.02
+591		1.60
+592		2.39
+593		5.37
+594		2.04
+595		0.94
+596		2.23
+597		2.05
+598		0.96
+599		3.22
+600		9.48
+601		4.09
+602		3.18
+603		3.07
+604		3.19
+605		4.37
+606		3.10
+607		4.38
+608		10.06
+609		3.83
+610		4.18
+611		2.33
+612		0.76
+613		1.61
+614		5.65
+615		5.73
+616		3.27
+617		1.61
+618		1.36
+619		1.81
+620		3.49
+621		3.19
+622		1.44
+623		0.87
+624		7.60
+625		2.01
+626		2.06
+627		1.15
+628		2.65
+629		2.66
+630		1.23
+631		17.35
+632		1.31
+633		3.19
+634		3.24
+635		2.57
+636		1.45
+637		2.31
+638		2.65
+639		3.79
+640		3.40
+641		3.28
+642		2.55
+643		1.52
+644		5.88
+645		2.28
+646		5.67
+647		3.97
+648		3.21
+649		10.74
+650		2.25
+651		4.23
+652		1.98
+653		5.46
+654		2.78
+655		4.52
+656		2.83
+657		5.99
+658		1.14
+659		1.79
+660		3.28
+661		1.58
+662		4.18
+663		3.19
+664		2.28
+665		5.62
+666		2.66
+667		1.43
+668		1.58
+669		5.35
+670		3.30
+671		7.49
+672		2.15
+673		4.22
+674		3.22
+675		3.55
+676		5.18
+677		3.27
+678		3.09
+679		1.89
+680		3.28
+681		4.32
+682		2.41
+683		11.83
+684		6.65
+685		2.98
+686		14.01
+687		3.15
+688		2.12
+689		2.30
+690		4.21
+691		2.71
+692		3.27
+693		4.07
+694		2.68
+695		3.24
+696		1.71
+697		1.24
+698		2.30
+699		3.18
+700		4.42
+701		6.10
+702		2.50
+703		3.98
+704		3.38
+705		5.35
+706		4.39
+707		2.20
+708		0.74
+709		2.45
+710		3.12
+711		2.01
+712		1.00
+713		2.41
+714		3.74
+715		2.17
+716		9.50
+717		3.20
+718		10.86
+719		4.90
+720		1.14
+721		7.08
+722		1.18
+723		2.22
+724		9.85
+725		2.26
+726		6.27
+727		3.19
+728		2.89
+729		4.37
+730		2.68
+731		5.25
+732		0.87
+733		7.48
+734		3.43
+735		1.27
+736		0.87
+737		9.00
+738		5.77
+739		4.43
+740		3.99
+741		2.38
+742		4.02
+743		3.40
+744		3.32
+745		1.97
+746		2.04
+747		4.50
+748		5.51
+749		2.37
+750		4.17
+751		4.38
+752		3.21
+753		3.49
+754		2.14
+755		3.29
+756		2.18
+757		4.30
+758		6.30
+759		2.28
+760		4.48
+761		5.45
+762		0.94
+763		5.37
+764		0.87
+765		3.34
+766		5.26
+767		1.11
+768		1.96
+769		1.67
+770		3.16
+771		5.14
+772		1.18
+773		7.05
+774		1.29
+775		5.59
+776		3.51
+777		5.05
+778		4.33
+779		3.13
+780		1.54
+781		1.72
+782		3.27
+783		1.37
+784		3.20
+785		4.44
+786		2.02
+787		1.01
+788		3.26
+789		0.69
+790		4.96
+791		3.88
+792		2.83
+793		7.03
+794		9.94
+795		6.29
+796		0.72
+797		0.98
+798		3.29
+799		4.35
+800		2.26
+801		1.75
+802		2.52
+803		3.25
+804		3.21
+805		2.05
+806		1.87
+807		0.89
+808		3.16
+809		5.49
+810		4.67
+811		3.83
+812		3.15
+813		2.14
+814		1.59
+815		3.13
+816		1.45
+817		1.74
+818		2.68
+819		4.39
+820		3.41
+821		2.62
+822		9.52
+823		3.23
+824		3.04
+825		2.24
+826		3.14
+827		2.20
+828		0.86
+829		3.13
+830		2.57
+831		2.18
+832		1.57
+833		6.75
+834		3.13
+835		1.04
+836		3.21
+837		1.28
+838		1.90
+839		2.00
+840		4.46
+841		2.07
+842		0.92
+843		2.68
+844		11.50
+845		4.09
+846		2.25
+847		2.20
+848		2.08
+849		2.29
+850		12.56
+851		12.90
+852		6.22
+853		4.41
+854		1.99
+855		5.38
+856		2.14
+857		8.63
+858		2.04
+859		3.00
+860		3.25
+861		1.45
+862		2.55
+863		5.55
+864		4.21
+865		4.82
+866		3.22
+867		2.16
+868		0.71
+869		1.54
+870		1.71
+871		1.30
+872		1.57
+873		1.24
+874		2.59
+875		3.03
+876		3.85
+877		2.21
+878		1.53
+879		1.45
+880		5.17
+881		6.04
+882		4.09
+883		0.91
+884		3.61
+885		2.67
+886		1.75
+887		1.92
+888		2.52
+889		3.95
+890		4.30
+891		4.35
+892		3.10
+893		2.23
+894		2.08
+895		6.65
+896		4.61
+897		1.67
+898		3.43
+899		5.58
+900		4.22
+901		0.91
+902		3.20
+903		0.92
+904		9.02
+905		3.66
+906		5.29
+907		0.98
+908		3.03
+909		4.36
+910		2.02
+911		2.30
+912		5.24
+913		3.20
+914		1.11
+915		2.74
+916		1.69
+917		1.25
+918		3.34
+919		0.90
+920		2.25
+921		1.91
+922		6.58
+923		3.08
+924		3.30
+925		5.26
+926		1.99
+927		3.25
+928		2.43
+929		3.82
+930		1.03
+931		2.71
+932		3.32
+933		2.41
+934		4.84
+935		3.23
+936		5.42
+937		3.20
+938		2.57
+939		1.74
+940		1.39
+941		4.10
+942		2.33
+943		3.18
+944		3.21
+945		7.56
+946		2.12
+947		9.28
+948		1.08
+949		5.20
+950		3.30
+951		2.97
+952		2.77
+953		3.21
+954		1.15
+955		3.18
+956		1.92
+957		1.10
+958		3.19
+959		5.53
+960		3.29
+961		4.18
+962		3.19
+963		1.94
+964		3.98
+965		3.95
+966		3.48
+967		2.72
+968		3.16
+969		3.86
+970		3.49
+971		2.72
+972		3.58
+973		3.55
+974		3.39
+975		3.80
+976		2.70
+977		3.16
+978		3.90
+979		2.56
+980		4.05
+981		3.09
+982		3.99
+983		3.55
+984		3.52
+985		3.44
+986		2.72
+987		3.88
+988		3.51
+989		3.46
+990		2.67
+991		2.99
+992		2.99
+993		2.92
+994		3.04
+995		2.94
+996		3.03
+997		2.93
+998		2.92
+999		2.93
+1000		2.91
+
+4769.99
diff --git a/out/out10.list b/out/out10.list
new file mode 100644
index 0000000..ed35a18
--- /dev/null
+++ b/out/out10.list
@@ -0,0 +1,1003 @@
+iter		Latency
+1		12.37
+2		14.94
+3		16.29
+4		10.74
+5		2.36
+6		13.77
+7		21.85
+8		2.15
+9		2.26
+10		5.68
+11		5.42
+12		27.05
+13		21.22
+14		13.09
+15		6.95
+16		11.29
+17		12.74
+18		9.25
+19		14.25
+20		5.28
+21		4.30
+22		3.28
+23		4.56
+24		5.66
+25		7.46
+26		9.39
+27		3.64
+28		2.41
+29		36.78
+30		12.28
+31		5.22
+32		8.86
+33		18.52
+34		22.59
+35		17.97
+36		13.42
+37		5.79
+38		7.90
+39		9.33
+40		14.63
+41		9.88
+42		47.79
+43		20.43
+44		17.05
+45		3.07
+46		2.81
+47		5.86
+48		9.54
+49		2.40
+50		20.84
+51		3.44
+52		2.62
+53		2.61
+54		37.46
+55		13.61
+56		3.49
+57		16.34
+58		24.93
+59		13.27
+60		9.72
+61		44.07
+62		15.09
+63		14.45
+64		4.03
+65		33.07
+66		14.28
+67		3.16
+68		36.30
+69		6.62
+70		2.53
+71		13.78
+72		12.02
+73		10.23
+74		11.49
+75		20.57
+76		8.60
+77		18.86
+78		2.16
+79		2.92
+80		4.73
+81		9.67
+82		5.85
+83		2.85
+84		3.05
+85		2.73
+86		40.05
+87		4.35
+88		3.28
+89		3.29
+90		9.20
+91		21.16
+92		3.34
+93		7.24
+94		17.07
+95		3.20
+96		7.26
+97		21.53
+98		12.67
+99		31.50
+100		9.45
+101		2.84
+102		10.16
+103		8.01
+104		8.65
+105		8.27
+106		6.67
+107		12.60
+108		22.19
+109		3.30
+110		7.80
+111		17.42
+112		12.45
+113		13.68
+114		5.07
+115		17.10
+116		26.99
+117		19.44
+118		6.03
+119		15.61
+120		2.93
+121		11.17
+122		22.55
+123		11.27
+124		3.29
+125		2.77
+126		30.64
+127		14.59
+128		29.67
+129		3.13
+130		13.30
+131		3.89
+132		9.16
+133		2.82
+134		19.11
+135		30.47
+136		2.54
+137		15.23
+138		7.65
+139		9.81
+140		3.04
+141		10.33
+142		17.23
+143		9.84
+144		2.80
+145		83.27
+146		11.03
+147		23.71
+148		54.10
+149		36.90
+150		10.32
+151		3.74
+152		2.37
+153		3.25
+154		5.92
+155		11.68
+156		2.94
+157		22.88
+158		7.19
+159		3.29
+160		6.89
+161		8.21
+162		2.74
+163		17.81
+164		13.54
+165		2.58
+166		8.64
+167		19.91
+168		5.17
+169		29.47
+170		5.34
+171		5.53
+172		5.64
+173		21.99
+174		26.28
+175		9.99
+176		10.59
+177		24.42
+178		8.91
+179		11.17
+180		3.40
+181		28.91
+182		14.20
+183		18.73
+184		7.44
+185		16.85
+186		3.02
+187		29.57
+188		3.53
+189		6.61
+190		21.39
+191		33.83
+192		4.40
+193		9.79
+194		28.99
+195		14.81
+196		2.88
+197		14.67
+198		3.00
+199		19.81
+200		7.64
+201		33.23
+202		22.16
+203		10.04
+204		3.07
+205		3.45
+206		12.25
+207		13.92
+208		29.07
+209		8.03
+210		11.88
+211		1.70
+212		3.28
+213		6.87
+214		14.92
+215		4.73
+216		39.11
+217		2.99
+218		10.59
+219		5.82
+220		18.63
+221		6.92
+222		18.82
+223		3.09
+224		2.62
+225		18.44
+226		19.92
+227		14.05
+228		32.66
+229		28.38
+230		5.80
+231		16.99
+232		10.91
+233		31.00
+234		3.19
+235		8.92
+236		3.22
+237		6.40
+238		3.25
+239		8.41
+240		35.82
+241		3.16
+242		2.81
+243		8.73
+244		14.73
+245		5.83
+246		13.88
+247		5.65
+248		57.88
+249		4.12
+250		2.49
+251		9.73
+252		7.03
+253		8.95
+254		49.52
+255		19.16
+256		17.45
+257		2.89
+258		12.50
+259		11.74
+260		21.06
+261		5.13
+262		29.76
+263		25.46
+264		2.79
+265		7.02
+266		4.53
+267		7.43
+268		10.72
+269		10.51
+270		5.81
+271		5.07
+272		53.77
+273		3.25
+274		9.38
+275		26.20
+276		65.50
+277		6.51
+278		12.61
+279		15.20
+280		9.53
+281		2.82
+282		8.60
+283		2.93
+284		2.45
+285		10.44
+286		7.59
+287		2.71
+288		12.54
+289		31.73
+290		7.44
+291		2.71
+292		24.36
+293		2.72
+294		22.18
+295		18.19
+296		6.71
+297		6.09
+298		16.53
+299		4.10
+300		3.07
+301		2.84
+302		10.62
+303		2.10
+304		1.99
+305		9.59
+306		5.04
+307		10.34
+308		5.93
+309		12.75
+310		8.31
+311		4.37
+312		36.11
+313		2.19
+314		2.74
+315		16.33
+316		4.22
+317		2.86
+318		3.82
+319		14.50
+320		6.13
+321		2.19
+322		8.53
+323		14.09
+324		4.05
+325		3.71
+326		12.62
+327		3.13
+328		13.24
+329		13.20
+330		10.43
+331		14.85
+332		4.00
+333		12.92
+334		6.44
+335		11.44
+336		3.88
+337		10.48
+338		10.86
+339		24.39
+340		5.37
+341		3.22
+342		5.77
+343		12.55
+344		2.57
+345		3.20
+346		5.64
+347		2.66
+348		1.70
+349		2.49
+350		8.52
+351		3.11
+352		3.70
+353		9.69
+354		3.48
+355		2.00
+356		1.86
+357		4.86
+358		29.36
+359		14.23
+360		19.08
+361		8.80
+362		6.89
+363		13.87
+364		2.92
+365		4.78
+366		1.79
+367		12.89
+368		22.40
+369		13.89
+370		5.51
+371		19.77
+372		3.28
+373		2.98
+374		3.38
+375		10.24
+376		40.87
+377		2.61
+378		13.73
+379		8.57
+380		9.95
+381		9.72
+382		2.37
+383		23.99
+384		2.01
+385		11.34
+386		6.13
+387		6.33
+388		18.64
+389		9.87
+390		7.87
+391		11.14
+392		6.68
+393		9.02
+394		24.92
+395		2.83
+396		25.26
+397		42.52
+398		3.12
+399		2.30
+400		10.07
+401		11.23
+402		8.97
+403		15.49
+404		9.35
+405		3.69
+406		8.34
+407		17.00
+408		39.42
+409		3.53
+410		12.81
+411		10.00
+412		9.01
+413		14.67
+414		16.32
+415		5.38
+416		12.33
+417		2.80
+418		2.59
+419		2.72
+420		19.64
+421		6.17
+422		8.50
+423		9.79
+424		3.25
+425		8.34
+426		18.11
+427		3.15
+428		24.31
+429		2.18
+430		19.16
+431		3.46
+432		12.83
+433		20.42
+434		6.22
+435		1.97
+436		7.75
+437		3.16
+438		4.98
+439		5.53
+440		14.91
+441		8.85
+442		26.26
+443		6.45
+444		9.19
+445		6.01
+446		6.71
+447		34.28
+448		26.21
+449		13.20
+450		4.46
+451		6.88
+452		11.03
+453		8.27
+454		12.06
+455		8.41
+456		2.18
+457		20.24
+458		22.07
+459		1.61
+460		9.18
+461		2.78
+462		5.42
+463		2.63
+464		15.14
+465		17.57
+466		5.95
+467		3.93
+468		10.33
+469		17.57
+470		9.66
+471		20.53
+472		13.90
+473		26.24
+474		31.06
+475		6.11
+476		32.99
+477		6.79
+478		5.98
+479		3.47
+480		10.00
+481		11.80
+482		7.80
+483		13.31
+484		6.62
+485		2.20
+486		11.06
+487		1.50
+488		7.23
+489		28.33
+490		3.01
+491		14.49
+492		2.81
+493		13.59
+494		4.75
+495		3.24
+496		21.77
+497		6.30
+498		37.54
+499		17.69
+500		2.15
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+503		26.56
+504		5.24
+505		3.96
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+512		64.27
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+516		8.15
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+531		5.60
+532		11.27
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+569		2.41
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+579		13.38
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+582		3.12
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+704		22.93
+705		8.79
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+707		10.72
+708		14.01
+709		1.38
+710		6.19
+711		17.98
+712		3.56
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+714		5.26
+715		2.21
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+717		11.88
+718		2.83
+719		4.11
+720		4.41
+721		5.62
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+733		11.56
+734		13.73
+735		2.37
+736		2.18
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+739		4.58
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+741		7.22
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+746		5.10
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+784		6.28
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+811		2.74
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+815		9.98
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+823		9.91
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+829		3.04
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+832		5.51
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+835		3.31
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+849		2.77
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+948		3.93
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+954		2.17
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+
+10584.82
diff --git a/out/out2.list b/out/out2.list
new file mode 100644
index 0000000..9a34505
--- /dev/null
+++ b/out/out2.list
@@ -0,0 +1,1003 @@
+iter		Latency
+1		16.47
+2		5.05
+3		3.40
+4		3.73
+5		3.45
+6		3.35
+7		6.29
+8		8.00
+9		5.04
+10		4.71
+11		2.24
+12		2.42
+13		12.65
+14		10.51
+15		1.96
+16		7.82
+17		12.79
+18		4.92
+19		9.72
+20		2.53
+21		12.61
+22		17.16
+23		2.29
+24		2.34
+25		4.08
+26		10.74
+27		2.61
+28		4.47
+29		5.01
+30		5.99
+31		13.50
+32		5.11
+33		3.93
+34		4.44
+35		7.14
+36		2.61
+37		2.31
+38		2.10
+39		4.90
+40		2.51
+41		7.50
+42		4.78
+43		5.23
+44		4.90
+45		2.28
+46		2.73
+47		2.44
+48		2.35
+49		14.69
+50		4.84
+51		2.09
+52		2.91
+53		9.46
+54		1.81
+55		16.99
+56		7.10
+57		5.24
+58		2.40
+59		4.10
+60		4.85
+61		14.82
+62		4.81
+63		21.70
+64		9.81
+65		15.30
+66		7.39
+67		19.29
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+69		4.58
+70		5.05
+71		6.89
+72		7.50
+73		17.34
+74		2.00
+75		2.80
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+77		4.74
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+79		7.43
+80		5.23
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+83		8.33
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+88		8.30
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+591		3.36
+592		2.85
+593		3.80
+594		1.27
+595		1.78
+596		1.63
+597		2.11
+598		3.22
+599		1.18
+600		1.25
+601		1.82
+602		1.40
+603		3.30
+604		4.04
+605		2.24
+606		5.56
+607		3.26
+608		3.25
+609		3.38
+610		2.06
+611		3.21
+612		7.81
+613		5.20
+614		10.75
+615		2.67
+616		1.12
+617		3.05
+618		2.73
+619		1.39
+620		2.57
+621		2.45
+622		5.02
+623		2.15
+624		0.96
+625		8.76
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+627		3.94
+628		3.41
+629		1.81
+630		4.00
+631		2.59
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+655		6.91
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+664		3.27
+665		2.15
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+669		7.64
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+690		1.98
+691		1.25
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+693		14.16
+694		2.98
+695		4.61
+696		0.94
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+699		1.21
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+702		0.88
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+719		1.24
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+721		4.32
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+723		1.10
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+733		3.91
+734		4.52
+735		2.79
+736		3.94
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+738		0.98
+739		3.18
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+741		2.89
+742		6.19
+743		0.70
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+746		3.83
+747		1.28
+748		2.28
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+787		1.31
+788		3.26
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+792		3.87
+793		3.32
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+795		4.96
+796		3.42
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+799		1.17
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+801		0.96
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+810		6.68
+811		0.92
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+815		1.82
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+821		0.71
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+823		6.78
+824		1.41
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+828		7.16
+829		3.26
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+831		3.50
+832		1.82
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+835		3.46
+836		7.88
+837		2.60
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+849		3.07
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+914		0.98
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+948		2.09
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+981		3.87
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+984		3.66
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+987		3.51
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+
+4775.02
diff --git a/out/out3.list b/out/out3.list
new file mode 100644
index 0000000..7624cbc
--- /dev/null
+++ b/out/out3.list
@@ -0,0 +1,1003 @@
+iter		Latency
+1		11.25
+2		22.71
+3		2.23
+4		2.34
+5		2.32
+6		7.72
+7		2.48
+8		7.78
+9		2.65
+10		7.37
+11		4.78
+12		4.78
+13		7.56
+14		2.61
+15		7.12
+16		2.48
+17		10.43
+18		9.33
+19		2.24
+20		9.35
+21		3.20
+22		4.73
+23		2.48
+24		7.58
+25		9.09
+26		11.50
+27		2.61
+28		2.45
+29		12.27
+30		7.12
+31		19.56
+32		39.46
+33		22.42
+34		9.55
+35		7.51
+36		5.84
+37		8.52
+38		6.60
+39		4.80
+40		6.69
+41		2.15
+42		17.25
+43		2.67
+44		2.67
+45		2.26
+46		2.22
+47		1.97
+48		17.01
+49		5.32
+50		4.70
+51		5.11
+52		10.00
+53		2.48
+54		10.09
+55		4.30
+56		2.78
+57		2.41
+58		4.68
+59		4.83
+60		11.65
+61		2.51
+62		3.55
+63		4.60
+64		4.82
+65		1.74
+66		18.95
+67		12.37
+68		9.68
+69		9.08
+70		2.27
+71		5.36
+72		2.82
+73		19.43
+74		2.31
+75		8.48
+76		7.39
+77		9.43
+78		4.82
+79		2.54
+80		2.18
+81		11.25
+82		9.90
+83		2.57
+84		6.35
+85		12.88
+86		4.37
+87		8.89
+88		3.33
+89		7.17
+90		4.85
+91		11.61
+92		2.02
+93		4.93
+94		2.13
+95		10.48
+96		2.23
+97		5.75
+98		7.36
+99		2.18
+100		9.19
+101		16.87
+102		2.49
+103		18.75
+104		2.30
+105		2.29
+106		2.70
+107		15.00
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+110		2.02
+111		3.21
+112		8.19
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+114		4.70
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+120		12.06
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+145		5.03
+146		38.76
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+148		2.44
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+150		11.13
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+304		9.27
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+311		4.30
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+313		9.24
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+315		14.10
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+317		32.00
+318		9.70
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+320		5.76
+321		4.85
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+323		21.14
+324		12.11
+325		3.16
+326		9.47
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+328		11.24
+329		6.91
+330		9.34
+331		12.67
+332		2.45
+333		11.61
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+336		2.42
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+339		12.28
+340		9.77
+341		32.57
+342		1.99
+343		2.41
+344		4.87
+345		2.19
+346		3.55
+347		2.54
+348		2.43
+349		7.72
+350		2.41
+351		7.65
+352		2.10
+353		7.86
+354		2.27
+355		2.52
+356		1.95
+357		2.36
+358		2.07
+359		5.15
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+361		2.37
+362		7.25
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+364		2.89
+365		2.39
+366		5.06
+367		2.40
+368		6.23
+369		0.80
+370		5.54
+371		1.09
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+373		1.33
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+376		1.78
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+379		9.54
+380		2.65
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+386		2.17
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+389		5.55
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+395		3.37
+396		3.07
+397		3.73
+398		2.69
+399		1.64
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+401		1.59
+402		5.49
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+404		2.66
+405		8.26
+406		3.68
+407		2.29
+408		3.18
+409		3.31
+410		3.46
+411		4.62
+412		1.65
+413		1.49
+414		1.84
+415		7.63
+416		1.59
+417		4.66
+418		1.47
+419		1.53
+420		6.63
+421		2.32
+422		0.73
+423		5.95
+424		2.05
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+426		0.97
+427		2.25
+428		0.85
+429		3.63
+430		9.77
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+432		2.62
+433		1.72
+434		1.50
+435		1.78
+436		2.54
+437		11.77
+438		3.24
+439		2.53
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+442		2.22
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+444		1.86
+445		3.37
+446		0.87
+447		3.96
+448		2.33
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+450		0.68
+451		2.54
+452		4.00
+453		1.40
+454		0.68
+455		2.52
+456		5.04
+457		1.15
+458		3.72
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+460		3.31
+461		2.11
+462		4.33
+463		4.29
+464		2.52
+465		3.35
+466		1.61
+467		1.43
+468		1.73
+469		1.25
+470		2.25
+471		3.25
+472		3.22
+473		4.29
+474		0.75
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+573		4.09
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+575		0.73
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+581		7.00
+582		5.88
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+
+4612.27
diff --git a/out/out4.list b/out/out4.list
new file mode 100644
index 0000000..aec99a6
--- /dev/null
+++ b/out/out4.list
@@ -0,0 +1,1003 @@
+iter		Latency
+1		6.69
+2		3.27
+3		3.62
+4		3.57
+5		3.63
+6		3.35
+7		2.09
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+10		2.15
+11		2.85
+12		2.63
+13		2.33
+14		2.24
+15		2.40
+16		2.11
+17		2.27
+18		2.00
+19		2.38
+20		1.99
+21		2.73
+22		2.00
+23		2.39
+24		2.89
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+26		2.40
+27		2.36
+28		2.55
+29		2.38
+30		2.06
+31		2.40
+32		2.27
+33		2.66
+34		2.18
+35		2.31
+36		1.76
+37		2.48
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+39		1.99
+40		2.68
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+42		2.55
+43		2.05
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+45		2.42
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+47		2.15
+48		3.72
+49		2.72
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+51		2.31
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+
+2560.18
diff --git a/out/out5.list b/out/out5.list
new file mode 100644
index 0000000..7a9d35e
--- /dev/null
+++ b/out/out5.list
@@ -0,0 +1,1003 @@
+iter		Latency
+1		104.84
+2		32.33
+3		4.93
+4		2.52
+5		2.56
+6		7.90
+7		5.35
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+14		2.22
+15		2.03
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+17		15.87
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+21		24.39
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+23		2.28
+24		7.34
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+30		4.11
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+33		3.16
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+35		3.76
+36		1.14
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+39		7.04
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+42		9.12
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+566		6.71
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+569		44.09
+570		1.96
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+572		3.33
+573		6.51
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+575		7.81
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+577		5.49
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+579		37.62
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+581		6.42
+582		9.20
+583		18.14
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+594		12.78
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+615		7.18
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+621		25.11
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+914		8.65
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+948		6.69
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+974		2.61
+975		2.09
+976		2.78
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+984		1.74
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+987		1.23
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+
+18338.22
diff --git a/out/out6.list b/out/out6.list
new file mode 100644
index 0000000..027ca5d
--- /dev/null
+++ b/out/out6.list
@@ -0,0 +1,1003 @@
+iter		Latency
+1		3.59
+2		4.80
+3		6.50
+4		3.04
+5		6.22
+6		2.08
+7		9.16
+8		4.02
+9		12.71
+10		37.61
+11		10.22
+12		6.88
+13		3.47
+14		2.72
+15		20.72
+16		41.79
+17		7.16
+18		16.74
+19		2.90
+20		21.17
+21		22.96
+22		3.05
+23		38.31
+24		10.35
+25		16.68
+26		10.68
+27		6.94
+28		35.10
+29		13.08
+30		12.60
+31		3.42
+32		11.98
+33		3.37
+34		2.96
+35		6.82
+36		5.56
+37		6.37
+38		2.87
+39		44.30
+40		7.96
+41		12.74
+42		3.11
+43		6.03
+44		2.02
+45		3.27
+46		5.44
+47		14.01
+48		14.25
+49		5.56
+50		24.62
+51		33.20
+52		13.11
+53		9.44
+54		22.45
+55		3.37
+56		2.59
+57		17.20
+58		10.23
+59		11.28
+60		2.00
+61		1.81
+62		6.04
+63		26.66
+64		5.62
+65		2.29
+66		2.04
+67		2.45
+68		2.77
+69		16.79
+70		26.83
+71		14.59
+72		24.48
+73		9.27
+74		6.01
+75		2.39
+76		6.57
+77		6.02
+78		11.41
+79		29.63
+80		16.12
+81		4.30
+82		2.89
+83		2.77
+84		4.69
+85		4.68
+86		6.76
+87		21.45
+88		16.37
+89		6.93
+90		39.37
+91		9.93
+92		9.56
+93		22.84
+94		2.97
+95		19.61
+96		4.59
+97		3.05
+98		15.12
+99		11.19
+100		15.67
+101		3.35
+102		2.32
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+104		2.95
+105		32.21
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+107		6.02
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+114		6.31
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+120		11.41
+121		10.87
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+123		3.13
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+
+11054.99
diff --git a/out/out7.list b/out/out7.list
new file mode 100644
index 0000000..b2cb10b
--- /dev/null
+++ b/out/out7.list
@@ -0,0 +1,1003 @@
+iter		Latency
+1		1789.42
+2		11.65
+3		25.90
+4		4.39
+5		3.13
+6		2.43
+7		10.80
+8		1.20
+9		7.00
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+911		3.13
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+913		0.84
+914		3.01
+915		3.08
+916		2.17
+917		3.04
+918		0.85
+919		3.48
+920		3.41
+921		2.87
+922		3.09
+923		3.08
+924		3.08
+925		3.27
+926		3.69
+927		3.18
+928		3.20
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+931		3.11
+932		2.11
+933		6.13
+934		3.69
+935		3.12
+936		3.77
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+938		3.16
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+942		2.07
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+945		2.32
+946		0.71
+947		2.19
+948		3.10
+949		3.98
+950		1.87
+951		1.04
+952		2.90
+953		3.58
+954		2.85
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+960		2.85
+961		2.88
+962		2.85
+963		2.85
+964		2.85
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+966		2.93
+967		2.85
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+971		2.86
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+973		2.88
+974		2.85
+975		2.85
+976		2.85
+977		2.86
+978		2.86
+979		2.85
+980		2.86
+981		2.86
+982		2.85
+983		2.85
+984		2.85
+985		3.52
+986		2.85
+987		2.90
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+989		2.92
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+993		2.85
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+996		2.85
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+
+18530.42
diff --git a/out/out8.list b/out/out8.list
new file mode 100644
index 0000000..6a369f5
--- /dev/null
+++ b/out/out8.list
@@ -0,0 +1,1003 @@
+iter		Latency
+1		42.19
+2		20.69
+3		12.15
+4		35.79
+5		7.31
+6		13.78
+7		43.49
+8		6.48
+9		1.57
+10		4.47
+11		4.60
+12		11.01
+13		10.49
+14		4.10
+15		12.23
+16		16.01
+17		7.16
+18		7.08
+19		1.83
+20		4.16
+21		3.06
+22		0.77
+23		1.25
+24		1.66
+25		1.40
+26		2.35
+27		3.62
+28		2.70
+29		1.50
+30		1.62
+31		1.42
+32		2.41
+33		2.77
+34		1.16
+35		2.61
+36		1.06
+37		2.56
+38		4.33
+39		2.79
+40		2.80
+41		1.40
+42		1.64
+43		5.15
+44		3.98
+45		2.78
+46		2.26
+47		4.03
+48		1.23
+49		8.16
+50		3.22
+51		1.28
+52		3.94
+53		1.96
+54		3.38
+55		2.83
+56		1.38
+57		1.68
+58		1.36
+59		3.70
+60		1.05
+61		1.11
+62		2.78
+63		3.04
+64		1.45
+65		3.39
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+67		1.42
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+69		3.45
+70		4.19
+71		7.25
+72		5.88
+73		3.06
+74		1.15
+75		6.01
+76		1.15
+77		1.58
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+79		4.43
+80		3.48
+81		3.51
+82		0.83
+83		5.16
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+86		0.76
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+88		7.79
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+798		10.55
+799		6.20
+800		18.76
+801		10.44
+802		28.89
+803		3.57
+804		9.34
+805		19.12
+806		13.23
+807		19.18
+808		1.86
+809		18.78
+810		12.16
+811		27.15
+812		83.78
+813		6.24
+814		11.72
+815		3.41
+816		5.75
+817		6.82
+818		7.39
+819		3.14
+820		1.42
+821		1.04
+822		5.10
+823		3.04
+824		2.18
+825		3.07
+826		2.11
+827		2.64
+828		4.38
+829		4.38
+830		1.10
+831		4.00
+832		4.29
+833		0.84
+834		3.24
+835		1.31
+836		0.93
+837		1.24
+838		8.26
+839		2.03
+840		2.40
+841		1.41
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+843		8.15
+844		6.45
+845		1.23
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+848		6.65
+849		9.08
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+853		3.96
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+855		7.72
+856		11.81
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+865		1.23
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+867		2.63
+868		1.16
+869		4.03
+870		58.48
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+895		4.04
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+907		3.70
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+913		1.47
+914		1.30
+915		1.72
+916		2.25
+917		1.38
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+919		3.16
+920		4.34
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+923		4.09
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+928		3.53
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+932		3.04
+933		3.90
+934		3.10
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+936		4.53
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+941		3.89
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+943		1.48
+944		1.59
+945		7.14
+946		1.47
+947		3.13
+948		8.36
+949		3.26
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+951		0.91
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+954		10.62
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+961		1.50
+962		7.12
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+968		9.46
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+971		15.42
+972		1.60
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+974		1.26
+975		6.53
+976		2.71
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+979		1.49
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+981		9.29
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+983		1.81
+984		1.80
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+986		5.13
+987		3.07
+988		0.91
+989		0.94
+990		3.20
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+992		2.74
+993		1.21
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+999		3.30
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+
+18884.83
diff --git a/out/out9.list b/out/out9.list
new file mode 100644
index 0000000..ff268ca
--- /dev/null
+++ b/out/out9.list
@@ -0,0 +1,1003 @@
+iter		Latency
+1		6.20
+2		6.03
+3		8.94
+4		7.42
+5		2.62
+6		3.24
+7		4.37
+8		3.64
+9		14.04
+10		6.48
+11		2.40
+12		2.11
+13		1.98
+14		1.90
+15		3.52
+16		4.78
+17		5.97
+18		10.14
+19		20.88
+20		3.11
+21		4.87
+22		3.40
+23		2.34
+24		5.97
+25		3.44
+26		11.76
+27		2.92
+28		2.45
+29		9.95
+30		3.64
+31		13.29
+32		10.32
+33		12.84
+34		5.68
+35		6.68
+36		18.84
+37		14.73
+38		6.00
+39		2.36
+40		13.02
+41		3.03
+42		40.28
+43		18.58
+44		3.43
+45		6.78
+46		2.95
+47		34.43
+48		33.69
+49		4.18
+50		7.80
+51		33.63
+52		5.59
+53		7.98
+54		5.91
+55		35.72
+56		10.24
+57		3.46
+58		13.86
+59		2.20
+60		17.41
+61		2.92
+62		2.17
+63		2.31
+64		9.30
+65		10.51
+66		4.24
+67		21.07
+68		9.97
+69		8.84
+70		5.07
+71		2.57
+72		2.98
+73		1.84
+74		17.34
+75		42.41
+76		18.72
+77		4.32
+78		3.38
+79		29.49
+80		4.00
+81		12.91
+82		6.71
+83		21.75
+84		48.23
+85		5.95
+86		8.64
+87		3.44
+88		6.06
+89		7.48
+90		23.50
+91		12.40
+92		15.84
+93		6.86
+94		7.50
+95		20.55
+96		8.70
+97		14.40
+98		3.76
+99		20.22
+100		3.05
+101		6.26
+102		5.76
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+104		4.64
+105		2.67
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+119		8.39
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+329		6.86
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+342		5.28
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+345		2.14
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+347		5.98
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+349		9.04
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+351		6.23
+352		6.46
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+354		7.09
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+358		2.60
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+360		2.01
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+379		13.44
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+407		1.76
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+411		15.55
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+414		4.77
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+
+10990.46
diff --git a/server.cc b/server.cc
new file mode 100644
index 0000000..304dcf3
--- /dev/null
+++ b/server.cc
@@ -0,0 +1,289 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <rdma/rdma_cma.h>
+
+#define TEST_NZ(x) do { if ( (x)) die("error: " #x " failed (returned non-zero)." ); } while (0)
+#define TEST_Z(x)  do { if (!(x)) die("error: " #x " failed (returned zero/null)."); } while (0)
+
+const int BUFFER_SIZE = 1000;
+
+struct context {
+  struct ibv_context *ctx;
+  struct ibv_pd *pd;
+  struct ibv_cq *cq;
+  struct ibv_comp_channel *comp_channel;
+
+  pthread_t cq_poller_thread;
+};
+
+struct connection {
+  struct ibv_qp *qp;
+
+  struct ibv_mr *recv_mr;
+  struct ibv_mr *send_mr;
+
+  char *recv_region;
+  char *send_region;
+};
+
+static void die(const char *reason);
+
+static void build_context(struct ibv_context *verbs);
+static void build_qp_attr(struct ibv_qp_init_attr *qp_attr);
+static void * poll_cq(void *);
+static void post_receives(struct connection *conn);
+static void register_memory(struct connection *conn);
+
+static void on_completion(struct ibv_wc *wc);
+static int on_connect_request(struct rdma_cm_id *id);
+static int on_connection(void *context);
+static int on_disconnect(struct rdma_cm_id *id);
+static int on_event(struct rdma_cm_event *event);
+
+static struct context *s_ctx = NULL;
+
+int main(int argc, char **argv)
+{
+#if _USE_IPV6
+  struct sockaddr_in6 addr;
+#else
+  struct sockaddr_in addr;
+#endif
+  struct rdma_cm_event *event = NULL;
+  struct rdma_cm_id *listener = NULL;
+  struct rdma_event_channel *ec = NULL;
+  uint16_t port = 0;
+
+  memset(&addr, 0, sizeof(addr));
+  addr.sin_family = AF_INET;
+  addr.sin_port = htons(22222);
+#if _USE_IPV6
+  addr.sin6_family = AF_INET6;
+#else
+  addr.sin_family = AF_INET;
+#endif
+
+  TEST_Z(ec = rdma_create_event_channel());
+  TEST_NZ(rdma_create_id(ec, &listener, NULL, RDMA_PS_TCP));
+  TEST_NZ(rdma_bind_addr(listener, (struct sockaddr *)&addr));
+  TEST_NZ(rdma_listen(listener, 10)); /* backlog=10 is arbitrary */
+
+  port = ntohs(rdma_get_src_port(listener));
+
+  printf("listening on port %d.\n", port);
+
+  while (rdma_get_cm_event(ec, &event) == 0) {
+    struct rdma_cm_event event_copy;
+
+    memcpy(&event_copy, event, sizeof(*event));
+    rdma_ack_cm_event(event);
+
+    if (on_event(&event_copy))
+      break;
+  }
+
+  rdma_destroy_id(listener);
+  rdma_destroy_event_channel(ec);
+
+  return 0;
+}
+
+void die(const char *reason)
+{
+  fprintf(stderr, "%s\n", reason);
+  exit(EXIT_FAILURE);
+}
+
+void build_context(struct ibv_context *verbs)
+{
+  if (s_ctx) {
+    if (s_ctx->ctx != verbs)
+      die("cannot handle events in more than one context.");
+
+    return;
+  }
+
+  s_ctx = (struct context *)malloc(sizeof(struct context));
+
+  s_ctx->ctx = verbs;
+
+  TEST_Z(s_ctx->pd = ibv_alloc_pd(s_ctx->ctx));
+  TEST_Z(s_ctx->comp_channel = ibv_create_comp_channel(s_ctx->ctx));
+  TEST_Z(s_ctx->cq = ibv_create_cq(s_ctx->ctx, 40, NULL, s_ctx->comp_channel, 0)); /* cqe=10 is arbitrary */
+  TEST_NZ(ibv_req_notify_cq(s_ctx->cq, 0));
+
+  TEST_NZ(pthread_create(&s_ctx->cq_poller_thread, NULL, poll_cq, NULL));
+}
+
+void build_qp_attr(struct ibv_qp_init_attr *qp_attr)
+{
+  memset(qp_attr, 0, sizeof(*qp_attr));
+
+  qp_attr->send_cq = s_ctx->cq;
+  qp_attr->recv_cq = s_ctx->cq;
+  qp_attr->qp_type = IBV_QPT_RC;
+
+  qp_attr->cap.max_send_wr = 1000;
+  qp_attr->cap.max_recv_wr = 1000;
+  qp_attr->cap.max_send_sge = 1;
+  qp_attr->cap.max_recv_sge = 1;
+}
+
+void * poll_cq(void *ctx)
+{
+  struct ibv_cq *cq;
+  struct ibv_wc wc;
+
+  while (1) {
+    TEST_NZ(ibv_get_cq_event(s_ctx->comp_channel, &cq, &ctx));
+    ibv_ack_cq_events(cq, 1);
+    TEST_NZ(ibv_req_notify_cq(cq, 0));
+
+    while (ibv_poll_cq(cq, 1, &wc))
+      on_completion(&wc);
+  }
+
+  return NULL;
+}
+
+void post_receives(struct connection *conn)
+{
+  struct ibv_recv_wr wr, *bad_wr = NULL;
+  struct ibv_sge sge;
+
+  wr.wr_id = (uintptr_t)conn;
+  wr.next = NULL;
+  wr.sg_list = &sge;
+  wr.num_sge = 1;
+
+  sge.addr = (uintptr_t)conn->recv_region;
+  sge.length = BUFFER_SIZE;
+  sge.lkey = conn->recv_mr->lkey;
+
+  TEST_NZ(ibv_post_recv(conn->qp, &wr, &bad_wr));
+}
+
+void register_memory(struct connection *conn)
+{
+  conn->send_region = (char *)malloc(BUFFER_SIZE);
+  conn->recv_region = (char *)malloc(BUFFER_SIZE);
+
+  TEST_Z(conn->send_mr = ibv_reg_mr(
+    s_ctx->pd,
+    conn->send_region,
+    BUFFER_SIZE,
+    IBV_ACCESS_LOCAL_WRITE | IBV_ACCESS_REMOTE_WRITE));
+
+  TEST_Z(conn->recv_mr = ibv_reg_mr(
+    s_ctx->pd,
+    conn->recv_region,
+    BUFFER_SIZE,
+    IBV_ACCESS_LOCAL_WRITE | IBV_ACCESS_REMOTE_WRITE));
+}
+
+void on_completion(struct ibv_wc *wc)
+{
+  if (wc->status != IBV_WC_SUCCESS)
+    die("on_completion: status is not IBV_WC_SUCCESS.");
+
+  if (wc->opcode & IBV_WC_RECV) {
+    struct connection *conn = (struct connection *)(uintptr_t)wc->wr_id;
+    post_receives(conn);
+//    printf("received message: %s\n", conn->recv_region);
+
+  } else if (wc->opcode == IBV_WC_SEND) {
+    printf("send completed successfully.\n");
+  }
+}
+
+int on_connect_request(struct rdma_cm_id *id)
+{
+  struct ibv_qp_init_attr qp_attr;
+  struct rdma_conn_param cm_params;
+  struct connection *conn;
+
+  printf("received connection request.\n");
+
+  build_context(id->verbs);
+  build_qp_attr(&qp_attr);
+
+  TEST_NZ(rdma_create_qp(id, s_ctx->pd, &qp_attr));
+
+  id->context = conn = (struct connection *)malloc(sizeof(struct connection));
+  conn->qp = id->qp;
+
+  register_memory(conn);
+  for(int i = 0; i < 1000; i++)
+    post_receives(conn);
+
+  memset(&cm_params, 0, sizeof(cm_params));
+  TEST_NZ(rdma_accept(id, &cm_params));
+
+  return 0;
+}
+
+int on_connection(void *context)
+{
+  struct connection *conn = (struct connection *)context;
+  struct ibv_send_wr wr, *bad_wr = NULL;
+  struct ibv_sge sge;
+
+  snprintf(conn->send_region, BUFFER_SIZE, "message from passive/server side with pid %d", getpid());
+
+  printf("connected. posting send...\n");
+
+  memset(&wr, 0, sizeof(wr));
+
+  wr.opcode = IBV_WR_SEND;
+  wr.sg_list = &sge;
+  wr.num_sge = 1;
+  wr.send_flags = IBV_SEND_SIGNALED;
+
+  sge.addr = (uintptr_t)conn->send_region;
+  sge.length = BUFFER_SIZE;
+  sge.lkey = conn->send_mr->lkey;
+
+  TEST_NZ(ibv_post_send(conn->qp, &wr, &bad_wr));
+
+  return 0;
+}
+
+int on_disconnect(struct rdma_cm_id *id)
+{
+  struct connection *conn = (struct connection *)id->context;
+
+  printf("peer disconnected.\n");
+
+  rdma_destroy_qp(id);
+
+  ibv_dereg_mr(conn->send_mr);
+  ibv_dereg_mr(conn->recv_mr);
+
+  free(conn->send_region);
+  free(conn->recv_region);
+
+  free(conn);
+
+  rdma_destroy_id(id);
+
+  return 0;
+}
+
+int on_event(struct rdma_cm_event *event)
+{
+  int r = 0;
+
+  if (event->event == RDMA_CM_EVENT_CONNECT_REQUEST)
+    r = on_connect_request(event->id);
+  else if (event->event == RDMA_CM_EVENT_ESTABLISHED)
+//    r = on_connection(event->id->context);
+      r = 0;
+  else if (event->event == RDMA_CM_EVENT_DISCONNECTED)
+    r = on_disconnect(event->id);
+  else
+    die("on_event: unknown event.");
+
+  return r;
+}