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/* testSolve.c */
#include "../../timings.h"
#include "../ILUMtx.h"
/*--------------------------------------------------------------------*/
int
main ( int argc, char *argv[] )
/*
-----------------------------
test the ILUMtx solve methods
created -- 98sep04, cca
-----------------------------
*/
{
double ops, t1, t2 ;
Drand *drand ;
DV *rhsDV, *solDV ;
int LstorageMode, msglvl, neqns, rc, seed, symmetryflag, type,
UstorageMode ;
ILUMtx *mtx ;
FILE *matlabFile, *msgFile ;
if ( argc != 10 ) {
fprintf(stdout,
"\n\n usage : %s msglvl msgFile neqns type symmetryflag "
"\n LstorageMode UstorageMode seed matlabFile"
"\n msglvl -- message level"
"\n msgFile -- message file"
"\n neqns -- number of equations"
"\n type -- type of entries"
"\n 1 -- real entries"
"\n 2 -- complex entries"
"\n symmetryflag -- type of symmetry"
"\n 0 -- symmetric"
"\n 1 -- hermitian"
"\n 2 -- nonsymmetric"
"\n LstorageMode -- type of storage for L"
"\n 1 -- by rows"
"\n 2 -- by columns"
"\n UstorageMode -- type of storage for U"
"\n 1 -- by rows"
"\n 2 -- by columns"
"\n seed -- random number seed"
"\n", argv[0]) ;
return(0) ;
}
msglvl = atoi(argv[1]) ;
if ( strcmp(argv[2], "stdout") == 0 ) {
msgFile = stdout ;
} else if ( (msgFile = fopen(argv[2], "a")) == NULL ) {
fprintf(stderr, "\n fatal error in %s"
"\n unable to open file %s\n",
argv[0], argv[2]) ;
return(-1) ;
}
neqns = atoi(argv[3]) ;
type = atoi(argv[4]) ;
symmetryflag = atof(argv[5]) ;
LstorageMode = atof(argv[6]) ;
UstorageMode = atof(argv[7]) ;
seed = atoi(argv[8]) ;
if ( strcmp(argv[9], "stdout") == 0 ) {
matlabFile = stdout ;
} else if ( strcmp(argv[2], argv[9]) == 0 ) {
matlabFile = msgFile ;
} else if ( strcmp("none", argv[9]) != 0 ) {
if ( (matlabFile = fopen(argv[9], "w")) == NULL ) {
fprintf(stderr, "\n fatal error in %s"
"\n unable to open file %s\n",
argv[0], argv[9]) ;
return(-1) ;
}
} else {
matlabFile = NULL ;
}
fprintf(msgFile,
"\n %% %s "
"\n %% msglvl -- %d"
"\n %% msgFile -- %s"
"\n %% neqns -- %d"
"\n %% type -- %d"
"\n %% symmetryflag -- %d"
"\n %% LstorageMode -- %d"
"\n %% UstorageMode -- %d"
"\n %% seed -- %d"
"\n %% matlabFile -- %s"
"\n",
argv[0], msglvl, argv[2], neqns, type, symmetryflag,
LstorageMode, UstorageMode, seed, argv[9]) ;
fflush(msgFile) ;
/*
----------------------------
initialize the ILUMtx object
----------------------------
*/
mtx = ILUMtx_new() ;
rc = ILUMtx_init(mtx, neqns, type, symmetryflag,
LstorageMode, UstorageMode) ;
if ( rc != 1 ) { return(-1) ; }
/*
--------------------------------------
fill with random structure and entries
--------------------------------------
*/
rc = ILUMtx_fillRandom(mtx, seed) ;
if ( rc != 1 ) { return(-1) ; }
if ( matlabFile != NULL ) {
/*
----------------------
write to a matlab file
----------------------
*/
rc = ILUMtx_writeForMatlab(mtx, "L", "D", "U", matlabFile) ;
if ( rc != 1 ) { return(-1) ; }
}
/*
-------------------------------
generate a random rhs DV object
-------------------------------
*/
drand = Drand_new() ;
Drand_setUniform(drand, 0, 1) ;
Drand_setSeed(drand, seed + 1) ;
rhsDV = DV_new() ;
if ( type == SPOOLES_REAL ) {
DV_init(rhsDV, neqns, NULL) ;
Drand_fillDvector(drand, neqns, DV_entries(rhsDV)) ;
} else {
DV_init(rhsDV, 2*neqns, NULL) ;
Drand_fillDvector(drand, 2*neqns, DV_entries(rhsDV)) ;
}
if ( matlabFile != NULL ) {
fprintf(matlabFile, "\n B = zeros(%d,1) ;", neqns) ;
if ( type == SPOOLES_REAL ) {
DV_writeForMatlab(rhsDV, "B", matlabFile) ;
} else {
rhsDV->size = neqns ;
ZV_writeForMatlab((ZV *) rhsDV, "B", matlabFile) ;
rhsDV->size = 2*neqns ;
}
}
/*
-------------------------------------------
get a solution vector by solving the system
-------------------------------------------
*/
solDV = DV_new() ;
if ( type == SPOOLES_REAL ) {
DV_init(solDV, neqns, NULL) ;
Drand_fillDvector(drand, neqns, DV_entries(solDV)) ;
} else {
DV_init(solDV, 2*neqns, NULL) ;
}
DV_zero(solDV) ;
ops = 0.0 ;
MARKTIME(t1) ;
ILUMtx_solveVector(mtx, solDV, rhsDV, rhsDV, &ops, msglvl, msgFile) ;
MARKTIME(t2) ;
fprintf(msgFile,
"\n\n CPU %8.3f : solve system, %.0f ops, %.2f mflops\n",
t2 - t1, ops, 1.e-6*ops/(t2 - t1)) ;
if ( matlabFile != NULL ) {
fprintf(matlabFile, "\n X = zeros(%d,1) ;", neqns) ;
if ( type == SPOOLES_REAL ) {
DV_writeForMatlab(solDV, "X", matlabFile) ;
} else {
solDV->size = neqns ;
ZV_writeForMatlab((ZV *) solDV, "X", matlabFile) ;
solDV->size = 2*neqns ;
}
/*
---------------------------------------------
write out the matlab expression for the error
---------------------------------------------
*/
fprintf(matlabFile, "\n error = max(abs((U\\(D\\(L\\B))) - X))") ;
fflush(matlabFile) ;
}
/*
------------------------
free the working storage
------------------------
*/
ILUMtx_free(mtx) ;
Drand_free(drand) ;
DV_free(rhsDV) ;
DV_free(solDV) ;
fprintf(msgFile, "\n") ;
fclose(msgFile) ;
return(1) ; }
/*--------------------------------------------------------------------*/
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