/*****************************************************************************
* *
* Copyright (c) 2003-2006 Intel Corporation. *
* All rights reserved. *
* *
*****************************************************************************
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***************************************************************************
For more documentation than found here, see
[1] doc/ReadMe_IMB.txt
[2] Intel (R) MPI Benchmarks
Users Guide and Methodology Description
In
doc/IMB_ug.pdf
File: IMB_init.c
Modifications IMB_2.3 => IMB_3.0:
Better argument checking and error messages
Include -h flag for help
2 new auxiliary functions:
IMB_chk_arg_int
IMB_chk_arg_file
Implemented functions:
IMB_basic_input;
IMB_chk_arg_int
IMB_chk_arg_file
IMB_get_rank_portion;
IMB_init_communicator;
IMB_set_communicator;
IMB_valid;
IMB_set_default;
***************************************************************************/
#include "IMB_declare.h"
#include "IMB_benchmark.h"
#include "IMB_prototypes.h"
/********************************************************************/
int IMB_chk_arg_int(int* val, char ***argv, int *argc, int iarg)
{
/* Checks command line argument for being nonnegative integer */
int ok;
ok=1;
if( iarg < *argc ){
int tst=IMB_str_atoi((*argv)[iarg]);
if( tst>=0 ) {
*val=tst;
}
else ok=0;
}
else ok=0;
return ok;
}
int IMB_chk_arg_file(FILE** fd, char ***argv, int *argc, int iarg)
{
/* Checks command line argument for being a file */
int ok;
*fd=(FILE*)NULL;
ok=1;
if( iarg < *argc ){
FILE* tst=(FILE*) fopen((*argv)[iarg],"r");
if( tst ) {
*fd=tst;
}
else ok=0;
}
else ok=0;
return ok;
}
#define N_baseinfo 8
int IMB_basic_input(struct comm_info* c_info, struct Bench** P_BList, int *argc,
char ***argv, int* NP_min)
/*
Input variables:
-argc (type int *)
Number of command line arguments
-argv (type char ***)
List of command line arguments
Output variables:
-NP_min (type int*)
Minimum number of processes to run (-npmin command line argument)
-P_BList (type struct Bench**)
(For explanation of struct Bench type:
describes all aspects of modes of a benchmark;
see [1] for more information)
Address of list of benchmarks to run;
list is set up.
-c_info (type struct comm_info*)
Collection of all base data for MPI;
see [1] for more information
*/
{
int i,n_cases,n_lens,iarg,iarg_msg;
int deflt;
int * ALL_INFO;
char** DEFC, **CMT;
int ok;
/* IMB_3.0 */
int help_only;
help_only=0;
*P_BList = (struct Bench *)NULL;
MPI_Comm_rank(MPI_COMM_WORLD,&c_info->w_rank);
MPI_Comm_size(MPI_COMM_WORLD,&c_info->w_num_procs);
unit = stdout;
if( c_info->w_rank == 0 && strlen(OUTPUT_FILENAME) > 0 )
unit = fopen(OUTPUT_FILENAME,"w");
#ifdef DEBUG
dbgf_name = IMB_str("DBG_ ");
sprintf(dbgf_name+4,"%d",c_info->w_rank);
dbg_file = fopen(dbgf_name,"w");
#endif
deflt = 0;
ok = 0;
iarg_msg=-1;
c_info->group_mode = -1;
#ifdef MPIIO
*NP_min=1;
#else
*NP_min=2;
#endif
if( c_info->w_rank == 0 )
{
/* Interpret command line */
n_lens = 0;
if( *argc <= 1 )
{
/* Take default */
deflt = 1;
}
else
{
n_cases = *argc-1;
iarg = 1;
while( iarg <= *argc-1 )
{
if(!strcmp((*argv)[iarg],"-h") || !strcmp((*argv)[iarg],"-help"))
{
help_only=1;
break;
}
if(!strcmp((*argv)[iarg],"-npmin"))
{
/* IMB_3.0: Better arg checking for following cases */
if( !IMB_chk_arg_int(NP_min,argv,argc,iarg+1) )
{ok=-1;}
else if(*NP_min>0){n_cases -= 2;}
else
{ok=-1;}
if( ok==-1 )
{ fprintf(stderr,"Invalid argument after \"npmin\"\n");
break;
}
iarg++;
}
if(!strcmp((*argv)[iarg],"-multi"))
{
int tst;
if( !IMB_chk_arg_int(&tst,argv,argc,iarg+1) )
{ok=-1;}
else if( tst==0 || tst==1 ){
c_info->group_mode=tst;
n_cases -= 2;
}
else
{ok=-1;}
if( ok==-1 )
{ fprintf(stderr,"Invalid argument after \"multi\"\n");
break;
}
iarg++;
}
if(!strcmp((*argv)[iarg],"-map"))
{
int ierr;
if( iarg+1>=*argc ) {
fprintf(stderr,"Missing argument after \"map\"\n");
ok=-1;
break;
}
ierr=sscanf((*argv)[iarg+1],"%d%c%d",&c_info->px,&i,&c_info->py);
if(ierr<3 || c_info->px*c_info->py < c_info->w_num_procs)
{
fprintf(stderr,"Invalid map selection\n");
ok = -1;
break;
}
n_cases -= 2;
iarg++;
}
if(!strcmp((*argv)[iarg],"-msglen"))
{
FILE*t;
if( !IMB_chk_arg_file(&t,argv,argc,iarg+1) )
{ok=-1;
fprintf(stderr,"Filename after \"msglen\" flag invalid\n");
break;}
iarg_msg=iarg+1;
n_cases -= 2;
if( t )
{
char inp_line[72];
while(fgets(inp_line,72,t))
{
if( inp_line[0] != '#' && strlen(inp_line)>1 )
n_lens++;
}
fclose(t);
}
if ( n_lens==0 )
{
fprintf(stderr,"Sizes file %s invalid or doesnt exist\n",(*argv)[iarg_msg]);
ok = -1;
}
iarg++;
}
if(!strcmp((*argv)[iarg],"-input"))
{
FILE*t;
if( !IMB_chk_arg_file(&t,argv,argc,iarg+1) )
{ok=-1;
fprintf(stderr,"Filename after \"input\" flag invalid\n");
break;}
n_cases -= 2;
if( t )
{
char inp_line[72];
while(fgets(inp_line,72,t))
{
if( inp_line[0] != '#' && strlen(inp_line)>1 )
n_cases++;
}
fclose(t);
}
iarg++;
}
iarg++;
}
/* IMB_3.0 */
if( !help_only ) {
if(n_cases <= 0 )
deflt = 1;
else
{
iarg = 1;
while( iarg <= *argc-1 )
{
if(!strcmp((*argv)[iarg],"-npmin"))
iarg++;
else if(!strcmp((*argv)[iarg],"-multi"))
iarg++;
else if(!strcmp((*argv)[iarg],"-msglen"))
iarg++;
else if(!strcmp((*argv)[iarg],"-map"))
iarg++;
else if(!strcmp((*argv)[iarg],"-input"))
{
FILE*t = fopen((*argv)[iarg+1],"r");
if( t )
{
char inp_line[72], nam[32];
while(fgets(inp_line,72,t))
{
if( inp_line[0] != '#' && strlen(inp_line)-1 )
{
sscanf(inp_line,"%s",nam);
IMB_construct_blist(P_BList,n_cases,nam);
}
}
fclose(t);
}
else fprintf(unit,"Input file %s doesnt exist\n",(*argv)[iarg+1]);
iarg++;
}
else
{
IMB_construct_blist(P_BList,n_cases,(*argv)[iarg]);
}
iarg ++;
}
}
/* IMB_3.0 ; end "help_only" */
}
}
/* IMB_3.0 */
if( help_only || ok<0 ) {
/* Set flag "not ok" => help mode in main */
n_cases=0;
IMB_i_alloc(&ALL_INFO,N_baseinfo,"Basic_Input");
ok=-3;
}
else
{
if(deflt) {
n_cases = 0;
IMB_construct_blist(P_BList,0,"ALL");
}
if( iarg_msg>=0 )
{
FILE*t = fopen((*argv)[iarg_msg],"r");
c_info->n_lens=n_lens;
if( t && n_lens>0 )
{
char inp_line[72], S[32];
int sz, isz;
IMB_i_alloc(&c_info->msglen,n_lens,"Basic_Input");
isz=-1;
while(fgets(inp_line,72,t))
{
S[0]='\0';
if( inp_line[0] != '#' && strlen(inp_line)-1 )
{
int ierr;
sz=0;
ierr=sscanf(&inp_line[0],"%d%s",&sz,&S[0]);
if( ierr<=0 || ierr==EOF || sz<0 )
{
ierr=-1;
}
else if(ierr==2 )
{
if (S[0]=='k' || S[0]=='K') {sz=sz*1024;}
else if (S[0]=='m' || S[0]=='M') {sz=sz*1024*1024;}
else
{ ierr=-1;
}
}
if( ierr>0 )
{
isz++;
c_info->msglen[isz]=sz;
}
else
{
fprintf(stderr,"Invalid line in file %s\n",(*argv)[iarg_msg]);
}
}
}
n_lens=c_info->n_lens=isz+1;
fclose(t);
if ( n_lens==0 )
{
fprintf(stderr,"Sizes File %s invalid or doesnt exist\n",(*argv)[iarg_msg]);
ok = -1;
}
}
}
IMB_i_alloc(&ALL_INFO,N_baseinfo+n_cases,"Basic_Input");
if( !deflt )
{
i=0;
n_cases = 0;
while( (*P_BList)[i].name )
{
int index;
IMB_get_def_index(&index,(*P_BList)[i].name );
/* IMB_3.0
if( index >= 0 )
*/
if( index != LIST_END )
ALL_INFO[N_baseinfo+n_cases++] = index;
i++;
}
}
/* IMB_3.0 end "!help_only" */
}
ALL_INFO[0] = *NP_min;
ALL_INFO[1] = c_info->group_mode;
ALL_INFO[2] = deflt;
ALL_INFO[3] = n_cases;
ALL_INFO[4] = c_info->n_lens;
ALL_INFO[5] = c_info->px;
ALL_INFO[6] = c_info->py;
ALL_INFO[7] = ok;
MPI_Bcast(ALL_INFO,N_baseinfo,MPI_INT,0,MPI_COMM_WORLD);
if( ok<0 ) return ok;
if( n_cases > 0 && !deflt)
MPI_Bcast(ALL_INFO+N_baseinfo,n_cases,MPI_INT,0,MPI_COMM_WORLD);
if( n_lens > 0 )
MPI_Bcast(c_info->msglen,n_lens,MPI_INT,0,MPI_COMM_WORLD);
free(ALL_INFO);
}
else /* w_rank > 0 */
/* Receive input arguments */
{
int TMP[N_baseinfo];
MPI_Bcast(TMP,N_baseinfo,MPI_INT,0,MPI_COMM_WORLD);
*NP_min = TMP[0];
c_info->group_mode = TMP[1];
deflt = TMP[2];
n_cases = TMP[3];
n_lens = TMP[4];
c_info->px = TMP[5];
c_info->py = TMP[6];
ok = TMP[7];
if( ok<0 ) return ok;
if( deflt )
IMB_construct_blist(P_BList,0,"ALL");
else if( n_cases>0 )
{
IMB_i_alloc(&ALL_INFO,n_cases,"Basic_Input");
MPI_Bcast(ALL_INFO,n_cases,MPI_INT,0,MPI_COMM_WORLD);
IMB_get_def_cases(&DEFC,&CMT);
for( i = 0; i<n_cases; i++ )
/* IMB_3.0 */
{
if ( ALL_INFO[i] != LIST_INVALID ) {
IMB_construct_blist(P_BList,n_cases,DEFC[ALL_INFO[i]]);
}
else {
IMB_construct_blist(P_BList,n_cases,"");
}
}
free(ALL_INFO);
}
else
IMB_construct_blist(P_BList,1,"");
if( n_lens>0 )
{
c_info->n_lens=n_lens;
IMB_i_alloc(&c_info->msglen,n_lens,"Basic_Input");
MPI_Bcast(c_info->msglen,n_lens,MPI_INT,0,MPI_COMM_WORLD);
}
}
#ifdef DEBUG
{
int i;
fprintf(dbgf,"Got msglen:\n");
for(i=0; i<n_lens; i++) fprintf(stderr,"%d ",c_info->msglen[i]);
fprintf(dbgf,"\n\n");
fprintf(dbgf,"px py = %d %d\n",c_info->px,c_info->py);
fprintf(dbgf,"\n\n");
}
#endif
#ifndef EXT
if( do_nonblocking )
IMB_cpu_exploit(TARGET_CPU_SECS, 1);
#endif
return 0;
}
void IMB_get_rank_portion(int rank, int NP, int size,
int unit_size, int* pos1, int* pos2)
/*
Splits <size> into even contiguous pieces among processes
Input variables:
-rank (type int)
Process' rank
-NP (type int)
Number of processes
-size (type int)
Portion to split
-unit_size (type int)
Base unit for splitting
Output variables:
-pos1 (type int*)
-pos2 (type int*)
Process' portion is from unit pos1 to pos2
*/
{
int ne, baslen, mod;
ne = (size+unit_size-1)/unit_size;
baslen = ne/NP;
mod = ne%NP;
if( rank < mod )
{
*pos1 = rank*(baslen+1)*unit_size;
*pos2 = *pos1-1+(baslen+1)*unit_size;
}
else
{
*pos1 = (rank*baslen + mod)*unit_size;
*pos2 = *pos1-1 + baslen*unit_size;
}
*pos2 = min(*pos2,size-1);
}
/********************************************************************/
int IMB_init_communicator(struct comm_info* c_info, int NP)
/*
Input variables:
-NP (type int)
Number of all started processes
In/out variables:
-c_info (type struct comm_info*)
Collection of all base data for MPI;
see [1] for more information
Communicator of active processes gets initialized;
grouping of processes (in the 'multi' case) in communicators
Return value (type int)
Non currently used error exit (value is always 0)
*/
{
int i,snd,cnt,proc,*aux_ptr;
MPI_Group group, w_group;
MPI_Status stat;
c_info->NP=NP; /* NUMBER OF OVERALL PROCESSES */
IMB_set_communicator( c_info ); /* GROUP MANAGEMENT */
/* INITIALIZATION WITHIN THE ACTUAL COMMUNICATOR */
if( c_info->communicator != MPI_COMM_NULL )
{
MPI_Comm_size(c_info->communicator,&(c_info ->num_procs));
MPI_Comm_rank(c_info->communicator,&(c_info ->rank));
c_info->pair0 = 0;
c_info->pair1 = c_info ->num_procs-1;
c_info->select_tag = 0;
c_info->select_source = 0;
}
else
{
c_info -> rank = -1;
}
if( c_info->communicator == MPI_COMM_WORLD )
{
c_info->n_groups = 1;
c_info->g_sizes[0] = c_info->w_num_procs;
for(i=0; i<c_info->w_num_procs; i++) c_info->g_ranks[i]=i;
}
else
{
/* Collect global group information */
if( c_info->rank == 0 )
{
/* group leaders provide group ranks */
MPI_Comm_group(MPI_COMM_WORLD,&w_group);
MPI_Comm_group(c_info->communicator,&group);
for (i=0; i<c_info->num_procs; i++) c_info->g_sizes[i] = i;
/* TRANSLATION OF RANKS */
MPI_Group_translate_ranks( group, c_info->num_procs,
c_info->g_sizes,w_group,
c_info->g_ranks );
snd = c_info->num_procs;
}
else
{
*c_info->g_ranks = -1;
snd = 1;
}
/* w_rank 0 collects in g_ranks ranks of single groups */
if( c_info->w_rank == 0 )
{
if( c_info->rank == 0 )
{
c_info->n_groups = 1;
c_info->g_sizes[c_info->n_groups-1] = c_info->num_procs;
aux_ptr = c_info->g_ranks+c_info->num_procs;
}
else
{
c_info->n_groups = 0;
aux_ptr=c_info->g_ranks;
}
for( proc=1; proc<c_info->w_num_procs; proc++ )
{
/* Recv group ranks or -1 */
cnt = (int)(c_info->g_ranks+c_info->w_num_procs-aux_ptr);
/* July 2002 fix V2.2.1 (wrong logistics), next 23 lines */
if( cnt <= 0 )
/* all leaders have sent, recv dummies (-1) from others! */
{
cnt=1;
MPI_Recv(&i,cnt,MPI_INT,proc,1000,MPI_COMM_WORLD,&stat);
}
else
{
MPI_Recv(aux_ptr,cnt,MPI_INT,proc,1000,MPI_COMM_WORLD,&stat);
if( *aux_ptr >= 0 )
{
/* Message was from a group leader */
c_info->n_groups ++;
MPI_Get_count( &stat, MPI_INT,
&c_info->g_sizes[c_info->n_groups-1]);
aux_ptr += c_info->g_sizes[c_info->n_groups-1];
}
}
/* end fix V2.2.1 */
}
}
else /* w_rank != 0 */
{
MPI_Send(c_info->g_ranks,snd,MPI_INT,0,1000,MPI_COMM_WORLD);
}
}
/* End collection of group information */
IMB_set_errhand(c_info);
return 0;
}
/**********************************************************************/
void IMB_set_communicator(struct comm_info *c_info )
/*
Performs the actual communicator splitting
In/out variables:
-c_info (type struct comm_info *)
Collection of all base data for MPI;
see [1] for more information
Application communicator gets initialized
*/
{
int color,key,i,j,ii;
int* map;
/* insert choice for communicator here;
NOTE : globally more than one communicator is allowed
Example: grouping of pairs of processes:
0 0 1 1 2 2 .. (if even), UNDEF 0 0 1 1 2 2 .. (if odd)
*/
if( c_info->communicator != MPI_COMM_NULL &&
c_info->communicator != MPI_COMM_SELF &&
c_info->communicator != MPI_COMM_WORLD)
{
i=MPI_Comm_free(&c_info->communicator);
IMB_err_hand(1,i);
}
IMB_i_alloc( &map, c_info->w_num_procs, "IMB_init");
ii=0;
if( c_info->px>1 && c_info->py>1 )
{
for( i=0; i<c_info->px; i++ )
for( j=0; j<c_info->py; j++ )
{
if(i+j*c_info->px<c_info->w_num_procs)
map[i+j*c_info->px] = ii++;
}
}
else
{
for( i=0; i<c_info->w_num_procs; i++ ) map[i]=i;
}
if(c_info->group_mode >= 0)
{
i=map[c_info->w_rank];
color = i/c_info->NP;
c_info->group_no = color;
key = i;
if(color >= c_info->w_num_procs/c_info->NP) color=MPI_UNDEFINED;
MPI_Comm_split(MPI_COMM_WORLD, color, key, &c_info->communicator);
}
/* Default choice and Group definition. */
else
{
if(map[c_info->w_rank] < c_info->NP) color=0;
else color=MPI_UNDEFINED;
c_info->group_no = 0;
key=map[c_info->w_rank];
MPI_Comm_split(MPI_COMM_WORLD, color, key, &c_info->communicator);
}
free(map);
}
int IMB_valid(struct comm_info * c_info, struct Bench* Bmark, int NP)
/*
Validates an input Benchmark / NP setting
Input variables:
-c_info (type struct comm_info *)
Collection of all base data for MPI;
see [1] for more information
-Bmark (type struct Bench*)
(For explanation of struct Bench type:
describes all aspects of modes of a benchmark;
see [1] for more information)
User input benchmark setting
-NP (type int)
Number of active processes
Return value (type int)
1/0 for valid / invalid input
*/
{
/* Checks validity of Bmark for NP processes */
/* Erroneous cases: */
int invalid, skip;
invalid = 0; skip = 0;
#ifndef MPIIO
invalid = Bmark->RUN_MODES[0].type == SingleTransfer && NP <=1;
skip = Bmark->RUN_MODES[0].type == SingleTransfer && NP > 2;
#endif
if ( invalid )
{
if( c_info->w_rank == 0 )
{
if( NP == 1 )
fprintf(unit,"\n# !! Benchmark %s invalid for %d process !! \n\n",Bmark->name,NP);
else
fprintf(unit,"\n# !! Benchmark %s invalid for %d processes !! \n\n",Bmark->name,NP);
}
return 0;
}
/* Cases to skip: */
if ( skip ) return 0;
return 1;
}
void IMB_set_default(struct comm_info* c_info)
/*
Default initialization of comm_info
Output variables:
-c_info (type struct comm_info*)
Collection of all base data for MPI;
see [1] for more information
*/
{
c_info->w_num_procs=0;
c_info->w_rank=-1;
c_info->NP=0;
c_info->px=0;
c_info->py=0;
c_info->communicator=MPI_COMM_NULL;
c_info->num_procs =0;
c_info->rank = -1;
c_info->s_data_type = MPI_DATATYPE_NULL;
c_info->r_data_type = MPI_DATATYPE_NULL;
c_info->red_data_type = MPI_DATATYPE_NULL;
c_info->op_type = MPI_OP_NULL;
c_info->pair0 = c_info->pair1 = -2;
c_info->select_tag = 0;
c_info->select_source = 0;
c_info->s_buffer = NULL;
c_info->s_data = NULL;
c_info->s_alloc = 0;
c_info->r_buffer = NULL;
c_info->r_data = NULL;
c_info->r_alloc = 0;
c_info->n_lens = 0;
c_info->msglen = NULL;
c_info->group_mode = 0;
c_info->n_groups = 0;
c_info->group_no = -1;
c_info->g_sizes = NULL;
c_info->g_ranks = NULL;
c_info->reccnt = NULL;
c_info->rdispl = NULL;
c_info->ERR=MPI_ERRHANDLER_NULL;
#ifdef MPIIO
/* FILE INFORMATION */
c_info->filename=NULL;
c_info->File_comm=MPI_COMM_NULL;
c_info->File_num_procs=0;
c_info->all_io_procs=0;
c_info->File_rank=-1;
c_info->fh=MPI_FILE_NULL;
c_info->etype=MPI_DATATYPE_NULL;
c_info->e_size=0;
c_info->filetype=MPI_DATATYPE_NULL;
c_info->split.Locsize=0;
c_info->split.Offset=(MPI_Offset)0;
c_info->split.Totalsize=0;
c_info->amode=0;
c_info->info=MPI_INFO_NULL;
/* View: */
c_info->disp=(MPI_Offset)0;
c_info->datarep=NULL;
c_info->view=MPI_DATATYPE_NULL;
c_info->ERRF=MPI_ERRHANDLER_NULL;
#endif
#ifdef EXT
c_info->WIN=MPI_WIN_NULL;
c_info->info=MPI_INFO_NULL;
c_info->ERRW=MPI_ERRHANDLER_NULL;
#endif
}
/********************************************************************/
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