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/* testSplitInpMtx.c */
#include "../spoolesMPI.h"
#include "../../Drand.h"
#include "../../timings.h"
/*--------------------------------------------------------------------*/
int
main ( int argc, char *argv[] )
/*
---------------------------------------------------
(1) process 0 reads in a InpMtx object.
(2) using a wrap map, distribute the object
(3) using a random map, distribute the object again
created -- 98may16, cca
---------------------------------------------------
*/
{
char *buffer ;
InpMtx *mtxA, *mtxB ;
double t1, t2 ;
double schecksums[3], pchecksums[3], tchecksums[3] ;
Drand *drand ;
int coordType, inputMode, iproc, length, myid,
msglvl, nent, neqns, nproc, rc, seed, tag, v ;
int ibuffer[3], stats[4], tstats[4] ;
int *map ;
IV *mapIV ;
FILE *msgFile ;
MPI_Status status ;
/*
---------------------------------------------------------------
find out the identity of this process and the number of process
---------------------------------------------------------------
*/
MPI_Init(&argc, &argv) ;
MPI_Comm_rank(MPI_COMM_WORLD, &myid) ;
MPI_Comm_size(MPI_COMM_WORLD, &nproc) ;
fprintf(stdout, "\n process %d of %d, argc = %d", myid, nproc, argc) ;
fflush(stdout) ;
if ( argc != 8 ) {
fprintf(stdout,
"\n\n usage : %s msglvl msgFile neqns nent seed "
"\n coordType inputMode "
"\n msglvl -- message level"
"\n msgFile -- message file"
"\n neqns -- number of equations"
"\n nent -- number of equations"
"\n seed -- random number seed"
"\n coordType -- coordinate type"
"\n 1 -- store by rows"
"\n 2 -- store by columns"
"\n 3 -- store by chevrons"
"\n inputMode -- input mode"
"\n 0 -- indices only"
"\n 1 -- indices and real entries"
"\n 2 -- indices and complex entries"
"\n", argv[0]) ;
return(0) ;
}
msglvl = atoi(argv[1]) ;
if ( strcmp(argv[2], "stdout") == 0 ) {
msgFile = stdout ;
} else {
length = strlen(argv[2]) + 1 + 4 ;
buffer = CVinit(length, '\0') ;
sprintf(buffer, "%s.%d", argv[2], myid) ;
if ( (msgFile = fopen(buffer, "w")) == NULL ) {
fprintf(stderr, "\n fatal error in %s"
"\n unable to open file %s\n",
argv[0], argv[2]) ;
return(-1) ;
}
CVfree(buffer) ;
}
neqns = atoi(argv[3]) ;
nent = atoi(argv[4]) ;
seed = atoi(argv[5]) ;
coordType = atoi(argv[6]) ;
inputMode = atoi(argv[7]) ;
fprintf(msgFile,
"\n %s "
"\n msglvl -- %d"
"\n msgFile -- %s"
"\n neqns -- %d"
"\n nent -- %d"
"\n seed -- %d"
"\n coordType -- %d"
"\n inputMode -- %d"
"\n",
argv[0], msglvl, argv[2], neqns, nent, seed,
coordType, inputMode) ;
fflush(msgFile) ;
/*
----------------------------------
create the random number generator
----------------------------------
*/
drand = Drand_new() ;
Drand_setSeed(drand, seed) ;
if ( myid == 0 ) {
/*
-------------------------------------------
processor 0, generate a random input matrix
-------------------------------------------
*/
MARKTIME(t1) ;
mtxA = InpMtx_new() ;
InpMtx_init(mtxA, INPMTX_BY_ROWS, inputMode, nent, 0) ;
Drand_setUniform(drand, 0, neqns) ;
Drand_fillIvector(drand, nent, InpMtx_ivec1(mtxA)) ;
Drand_fillIvector(drand, nent, InpMtx_ivec2(mtxA)) ;
if ( inputMode == SPOOLES_REAL ) {
Drand_setUniform(drand, -1.0, 1.0) ;
Drand_fillDvector(drand, nent, InpMtx_dvec(mtxA)) ;
} else if ( inputMode == SPOOLES_COMPLEX ) {
Drand_setUniform(drand, -1.0, 1.0) ;
Drand_fillDvector(drand, 2*nent, InpMtx_dvec(mtxA)) ;
}
mtxA->nent = nent ;
InpMtx_sortAndCompress(mtxA) ;
InpMtx_changeCoordType(mtxA, coordType) ;
MARKTIME(t2) ;
fprintf(msgFile, "\n CPU %9.5f : generate random matrix", t2 - t1) ;
/*
-----------------------------------------------
change the coordinate type and the storage mode
-----------------------------------------------
*/
InpMtx_changeCoordType(mtxA, coordType) ;
InpMtx_changeStorageMode(mtxA, INPMTX_BY_VECTORS) ;
mtxA->inputMode = inputMode ;
fprintf(msgFile, "\n\n random input matrix") ;
if ( msglvl > 2 ) {
InpMtx_writeForHumanEye(mtxA, msgFile) ;
} else {
InpMtx_writeStats(mtxA, msgFile) ;
}
fflush(msgFile) ;
/*
------------------------------------------
compute the serial checksums of the matrix
------------------------------------------
*/
InpMtx_checksums(mtxA, schecksums) ;
/*
-----------------------------------
send the first message identifying
the coordinate type, and input mode
-----------------------------------
*/
tag = 1 ;
ibuffer[0] = InpMtx_coordType(mtxA) ;
ibuffer[1] = InpMtx_inputMode(mtxA) ;
MARKTIME(t1) ;
for ( iproc = 1 ; iproc < nproc ; iproc++ ) {
MPI_Send((void *) ibuffer, 2, MPI_INT,
iproc, tag, MPI_COMM_WORLD);
}
MARKTIME(t2) ;
fprintf(msgFile, "\n CPU %9.5f : first message sent", t2 - t1) ;
} else {
/*
--------------------------------------------
receive the first message identifying the
coordinate type, storage mode and input mode
--------------------------------------------
*/
tag = 1 ;
MARKTIME(t1) ;
MPI_Recv((void *) ibuffer, 2, MPI_INT,
0, tag, MPI_COMM_WORLD, &status) ;
MARKTIME(t2) ;
fprintf(msgFile, "\n CPU %9.5f : first message received", t2 - t1) ;
mtxA = InpMtx_new() ;
InpMtx_init(mtxA, ibuffer[0], ibuffer[1], 0, 0) ;
InpMtx_changeStorageMode(mtxA, INPMTX_BY_VECTORS) ;
fprintf(msgFile, "\n\n after receiving initial information") ;
if ( msglvl > 2 ) {
InpMtx_writeForHumanEye(mtxA, msgFile) ;
} else {
InpMtx_writeStats(mtxA, msgFile) ;
}
}
/*
------------------------------------------
set the initial owners IV to be a wrap map
------------------------------------------
*/
mapIV = IV_new() ;
IV_init(mapIV, neqns, NULL) ;
map = IV_entries(mapIV) ;
for ( v = 0 ; v < neqns ; v++ ) {
map[v] = v % nproc ;
}
if ( msglvl > 2 ) {
fprintf(msgFile, "\n\n map") ;
IV_writeForHumanEye(mapIV, msgFile) ;
fflush(msgFile) ;
}
/*
------------------------------------
split the InpMtx object into pieces
------------------------------------
*/
stats[0] = stats[1] = stats[2] = stats[3] = 0 ;
tstats[0] = tstats[1] = tstats[2] = tstats[3] = 0 ;
tag++ ;
MARKTIME(t1) ;
mtxB = InpMtx_MPI_split(mtxA, mapIV, stats,
msglvl, msgFile, tag, MPI_COMM_WORLD) ;
MARKTIME(t2) ;
fprintf(msgFile, "\n CPU %9.5f : matrix split", t2 - t1) ;
fprintf(msgFile,
"\n send stats : %d messages with %d bytes"
"\n recv stats : %d messages with %d bytes",
stats[0], stats[2], stats[1], stats[3]) ;
MPI_Reduce((void *) stats, (void *) tstats, 4, MPI_INT,
MPI_SUM, 0, MPI_COMM_WORLD) ;
if ( myid == 0 ) {
fprintf(msgFile,
"\n total send stats : %d messages with %d bytes"
"\n total recv stats : %d messages with %d bytes",
tstats[0], tstats[2], tstats[1], tstats[3]) ;
fflush(msgFile) ;
}
InpMtx_free(mtxA) ;
mtxA = mtxB ;
tag += 2 ;
if ( mtxA != NULL ) {
InpMtx_changeStorageMode(mtxA, INPMTX_BY_VECTORS) ;
fprintf(msgFile,
"\n\n after splitting the InpMtx object with the wrap map") ;
if ( msglvl > 2 ) {
InpMtx_writeForHumanEye(mtxA, msgFile) ;
} else {
InpMtx_writeStats(mtxA, msgFile) ;
}
fflush(msgFile) ;
}
/*
---------------------
generate a random map
---------------------
*/
MARKTIME(t1) ;
Drand_setSeed(drand, seed + 1) ;
Drand_setUniform(drand, 0.0, (double) neqns) ;
for ( v = 0 ; v < neqns ; v++ ) {
map[v] = ((int) Drand_value(drand)) % nproc ;
}
MARKTIME(t2) ;
fprintf(msgFile, "\n CPU %9.5f : random map set", t2 - t1) ;
if ( msglvl > 2 ) {
fprintf(msgFile, "\n\n map") ;
IV_writeForHumanEye(mapIV, msgFile) ;
fflush(msgFile) ;
}
/*
----------------------------------------
now split the matrix with the random map
----------------------------------------
*/
stats[0] = stats[1] = stats[2] = stats[3] = 0 ;
tstats[0] = tstats[1] = tstats[2] = tstats[3] = 0 ;
MARKTIME(t1) ;
mtxB = InpMtx_MPI_split(mtxA, mapIV, stats,
msglvl, msgFile, tag, MPI_COMM_WORLD) ;
MARKTIME(t2) ;
fprintf(msgFile, "\n CPU %9.5f : matrix split", t2 - t1) ;
fprintf(msgFile,
"\n send stats : %d messages with %d bytes"
"\n recv stats : %d messages with %d bytes",
stats[0], stats[2], stats[1], stats[3]) ;
MPI_Reduce((void *) stats, (void *) tstats, 4, MPI_INT,
MPI_SUM, 0, MPI_COMM_WORLD) ;
if ( myid == 0 ) {
fprintf(msgFile,
"\n total send stats : %d messages with %d bytes"
"\n total recv stats : %d messages with %d bytes",
tstats[0], tstats[2], tstats[1], tstats[3]) ;
fflush(msgFile) ;
}
InpMtx_free(mtxA) ;
mtxA = mtxB ;
fprintf(msgFile,
"\n\n after splitting the InpMtx object with the owners map") ;
if ( msglvl > 2 ) {
InpMtx_writeForHumanEye(mtxA, msgFile) ;
} else {
InpMtx_writeStats(mtxA, msgFile) ;
}
fflush(msgFile) ;
/*
-----------------------------------------------
compute the checksums of the distributed matrix
-----------------------------------------------
*/
InpMtx_checksums(mtxA, pchecksums) ;
MPI_Reduce((void *) pchecksums, (void *) tchecksums, 3, MPI_DOUBLE,
MPI_SUM, 0, MPI_COMM_WORLD) ;
if ( myid == 0 ) {
fprintf(msgFile,
"\n\n checksums for original matrix : %12.4e %12.4e %12.4e"
"\n checksums for distributed matrix : %12.4e %12.4e %12.4e"
"\n error in checksum : %12.4e %12.4e %12.4e",
schecksums[0], schecksums[1], schecksums[2],
tchecksums[0], tchecksums[1], tchecksums[2],
tchecksums[0] - schecksums[0],
tchecksums[1] - schecksums[1],
tchecksums[2] - schecksums[2]) ;
}
/*
----------------
free the objects
----------------
*/
IV_free(mapIV) ;
InpMtx_free(mtxA) ;
Drand_free(drand) ;
MPI_Finalize() ;
fprintf(msgFile, "\n") ;
fclose(msgFile) ;
return(0) ; }
/*--------------------------------------------------------------------*/
|
