initial project

.gitignore

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+*~
+*.o
+COPYING
+INSTALL
+Makefile.in
+aclocal.m4
+autom4te.cache
+autoscan-2.68.log
+compile
+config.*
+configure
+depcomp
+install-sh
+missing
+Makefile
+src/.deps
+src/qpi_stress
+stamp-h1
+cscope*
+

AUTHORS

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+fangdingjun <[email protected]>

ChangeLog

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+
+2011-7-16:
+initial project

Makefile.am

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+SUBDIRS = src

NEWS

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+
+2011-7-16
+initial projects

README

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+
+1.overview
+
+    this is a tool to test CPU's QPI channel:
+
+    start a process A and bind to cpu0, then request a share memory
+    start a process B and bind to cpu1, then attach to process A's share memory
+    process A write to the share memory, process B read from then share memory via QPI channel
+    process A read the process B's share memory via QPI channel
+
+         procA                   procB
+          ||                      ||
+        +------+              +--------+
+        |cpu0  |  QPI channel | cpu1   |
+        +------+              +--------+
+          ||                      ||
+        +-----+                 +-----+
+        |memA |                 |memB |
+        +-----+                 +-----+
+
+2. install
+   unpack the source and enter the source directory, type 
+   ./configure
+   make
+   make install
+
+3.usage
+  type 
+    qpi_stress -h 
+  for help

autogen.sh

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+#!/bin/sh
+aclocal && autoheader && autoconf && automake -a && ./configure

configure.ac

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+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.68])
+AC_INIT([qpi-stress], [0.1], [[email protected]])
+AC_CONFIG_SRCDIR([src/worker.c])
+AC_CONFIG_HEADERS([config.h])
+AM_INIT_AUTOMAKE(1.0)
+
+# Checks for programs.
+AC_PROG_CC
+AM_PROG_CC_C_O
+
+# Checks for libraries.
+
+# Checks for header files.
+AC_CHECK_HEADERS([fcntl.h stdlib.h string.h sys/time.h unistd.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_TYPE_PID_T
+AC_TYPE_SIZE_T
+
+# Checks for library functions.
+AC_FUNC_FORK
+AC_CHECK_FUNCS([alarm gettimeofday memset])
+AC_CONFIG_FILES([Makefile
+                 src/Makefile])
+AC_OUTPUT 

src/Makefile.am

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+bin_PROGRAMS = qpi_stress
+qpi_stress_SOURCES = main.c cpu.c shm.c report.c worker.c
+qpi_stress_CFLAGS = -Wall -Werror -D_GNU_SOURCE 
+qpi_stress_LDFLAGS = -lpthread

src/cpu.c

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+/*
+ * Filename: cpu.c
+ * Author: [email protected]
+ * License: GPLv2
+ * Date: 2011-7-10
+ *
+ */
+
+#include<stdio.h>
+#include<unistd.h>
+#include<sched.h>
+//#include "qpi.h"
+
+int bind_to_cpu(int cpunum)
+{
+    int num = sysconf(_SC_NPROCESSORS_CONF);
+    int i;
+
+    cpu_set_t mask;
+
+    CPU_ZERO(&mask);
+    CPU_SET(cpunum, &mask);
+
+    if (sched_setaffinity(0, sizeof(mask), &mask) == -1) {
+        perror("set cpu affinity failed");
+        return -1;
+    }
+
+    CPU_ZERO(&mask);
+    if (sched_getaffinity(0, sizeof(mask), &mask) == -1) {
+        perror("get cpu affinity failed");
+        return -1;
+    }
+    for (i = 0; i < num; i++) {
+        if (CPU_ISSET(i, &mask)) {
+            break;
+        }
+    }
+    if (i != cpunum) {
+        fprintf(stderr,
+                "set cpu affinity failed: process not running on cpu %d\n",
+                cpunum);
+        return -1;
+    }
+    return 0;
+}
+