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LapH: computing eigensystem for the Laplacial Heaviside method
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Luigi Scorzato
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Sep 10, 2011
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| /*********************************************************************** | ||
| * Copyright (C) 2002,2003,2004,2005,2006,2007,2008 Carsten Urbach | ||
| * | ||
| * This file is part of tmLQCD. | ||
| * | ||
| * tmLQCD is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * tmLQCD is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with tmLQCD. If not, see <http://www.gnu.org/licenses/>. | ||
| ***********************************************************************/ | ||
| /* | ||
| * Program for computing the eigensystem of the Laplacian operator | ||
| * Authors Luigi Scorzato, Marco Cristoforetti | ||
| * | ||
| * | ||
| *******************************************************************************/ | ||
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| #define MAIN_PROGRAM | ||
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| #ifdef HAVE_CONFIG_H | ||
| # include "config.h" | ||
| #else | ||
| #error "no config.h" | ||
| #endif | ||
| #include <stdlib.h> | ||
| #include <stdio.h> | ||
| #include <math.h> | ||
| #include <time.h> | ||
| #include <string.h> | ||
| #if (defined BGL && !defined BGP) | ||
| # include <rts.h> | ||
| #endif | ||
| #ifdef MPI | ||
| # include <mpi.h> | ||
| #endif | ||
| #include "global.h" | ||
| #include <io/params.h> | ||
| #include <io/gauge.h> | ||
| #include "su3.h" | ||
| #include "ranlxd.h" | ||
| #include "geometry_eo.h" | ||
| #include "read_input.h" | ||
| #include "start.h" | ||
| #include "xchange.h" | ||
| #include "init_gauge_field.h" | ||
| #include "init_geometry_indices.h" | ||
| #include "mpi_init.h" | ||
| #include "solver/eigenvalues_Jacobi.h" | ||
| #include "init_jacobi_field.h" | ||
|
|
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| int main(int argc,char *argv[]) | ||
| { | ||
| int tslice,j,k; | ||
| char conf_filename[50]; | ||
|
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| #ifdef MPI | ||
| MPI_Init(&argc, &argv); | ||
| #endif | ||
|
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| /* Read the input file */ | ||
| read_input("LapH.input"); | ||
|
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| tmlqcd_mpi_init(argc, argv); | ||
|
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| if(g_proc_id==0) { | ||
| #ifdef SSE | ||
| printf("# The code was compiled with SSE instructions\n"); | ||
| #endif | ||
| #ifdef SSE2 | ||
| printf("# The code was compiled with SSE2 instructions\n"); | ||
| #endif | ||
| #ifdef SSE3 | ||
| printf("# The code was compiled with SSE3 instructions\n"); | ||
| #endif | ||
| #ifdef P4 | ||
| printf("# The code was compiled for Pentium4\n"); | ||
| #endif | ||
| #ifdef OPTERON | ||
| printf("# The code was compiled for AMD Opteron\n"); | ||
| #endif | ||
| #ifdef _GAUGE_COPY | ||
| printf("# The code was compiled with -D_GAUGE_COPY\n"); | ||
| #endif | ||
| #ifdef BGL | ||
| printf("# The code was compiled for Blue Gene/L\n"); | ||
| #endif | ||
| #ifdef BGP | ||
| printf("# The code was compiled for Blue Gene/P\n"); | ||
| #endif | ||
| #ifdef _USE_HALFSPINOR | ||
| printf("# The code was compiled with -D_USE_HALFSPINOR\n"); | ||
| #endif | ||
| #ifdef _USE_SHMEM | ||
| printf("# the code was compiled with -D_USE_SHMEM\n"); | ||
| # ifdef _PERSISTENT | ||
| printf("# the code was compiled for persistent MPI calls (halfspinor only)\n"); | ||
| # endif | ||
| #endif | ||
| #ifdef MPI | ||
| # ifdef _NON_BLOCKING | ||
| printf("# the code was compiled for non-blocking MPI calls (spinor and gauge)\n"); | ||
| # endif | ||
| #endif | ||
| printf("\n"); | ||
| fflush(stdout); | ||
| } | ||
|
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| #ifndef WITHLAPH | ||
| printf(" Error: WITHLAPH not defined"); | ||
| exit(0); | ||
| #error " Error: WITHLAPH not defined" | ||
| #endif | ||
| #ifdef MPI | ||
| #ifndef _INDEX_INDEP_GEOM | ||
| printf(" Error: _INDEX_INDEP_GEOM not defined"); | ||
| exit(0); | ||
| #error " Error: _INDEX_INDEP_GEOM not defined" | ||
| #endif | ||
| #ifndef _USE_TSPLITPAR | ||
| printf(" Error: _USE_TSPLITPAR not defined"); | ||
| exit(0); | ||
| #error " Error: _USE_TSPLITPAR not defined" | ||
| #endif | ||
| #endif | ||
| #ifdef FIXEDVOLUME | ||
| printf(" Error: FIXEDVOLUME not allowed"); | ||
| exit(0); | ||
| #error " Error: FIXEDVOLUME not defined" | ||
| #endif | ||
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| init_gauge_field(VOLUMEPLUSRAND + g_dbw2rand, 0); | ||
| init_geometry_indices(VOLUMEPLUSRAND + g_dbw2rand); | ||
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| if(g_proc_id == 0) { | ||
| fprintf(stdout,"The number of processes is %d \n",g_nproc); | ||
| printf("# The lattice size is %d x %d x %d x %d\n", | ||
| (int)(T*g_nproc_t), (int)(LX*g_nproc_x), (int)(LY*g_nproc_y), (int)(g_nproc_z*LZ)); | ||
| printf("# The local lattice size is %d x %d x %d x %d\n", | ||
| (int)(T), (int)(LX), (int)(LY),(int) LZ); | ||
| printf("# Computing LapH eigensystem \n"); | ||
|
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| fflush(stdout); | ||
| } | ||
|
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| /* define the geometry */ | ||
| geometry(); | ||
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| start_ranlux(1, 123456); | ||
|
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| /* Read Gauge field */ | ||
| sprintf(conf_filename, "%s.%.4d", gauge_input_filename, nstore); | ||
| if (g_cart_id == 0) { | ||
| printf("#\n# Trying to read gauge field from file %s in %s precision.\n", | ||
| conf_filename, (gauge_precision_read_flag == 32 ? "single" : "double")); | ||
| fflush(stdout); | ||
| } | ||
| if( (j = read_gauge_field(conf_filename)) !=0) { | ||
| fprintf(stderr, "Error %d while reading gauge field from %s\n Aborting...\n", j, conf_filename); | ||
| exit(-2); | ||
| } | ||
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| if (g_cart_id == 0) { | ||
| printf("# Finished reading gauge field.\n"); | ||
| fflush(stdout); | ||
| } | ||
|
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| #ifdef MPI | ||
| /*For parallelization: exchange the gaugefield */ | ||
| xchange_gauge(); | ||
| #endif | ||
|
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| /* Init Jacobi field */ | ||
| init_jacobi_field(SPACEVOLUME+SPACERAND,3); | ||
|
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| #ifdef MPI | ||
| { | ||
| /* for debugging in parallel set i_gdb = 0 */ | ||
| volatile int i_gdb = 8; | ||
| char hostname[256]; | ||
| gethostname(hostname, sizeof(hostname)); | ||
| printf("PID %d on %s ready for attach\n", getpid(), hostname); | ||
| fflush(stdout); | ||
| if(g_cart_id == 0){ | ||
| while (0 == i_gdb){ | ||
| sleep(5); | ||
| } | ||
| } | ||
| } | ||
|
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| MPI_Barrier(MPI_COMM_WORLD); | ||
| #endif | ||
|
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| for (k=0 ; k<3 ; k++) | ||
| random_jacobi_field(g_jacobi_field[k],SPACEVOLUME); | ||
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| /* Compute LapH Eigensystem */ | ||
|
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| for(tslice=0; tslice<T; tslice++){ | ||
| eigenvalues_Jacobi(&no_eigenvalues,5000, eigenvalue_precision,0,tslice,nstore); | ||
| } | ||
|
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| #ifdef MPI | ||
| MPI_Finalize(); | ||
| #endif | ||
| return(0); | ||
| } |
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