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/* testFactor.c */
#include "../ILUMtx.h"
#include "../../Drand.h"
#include "../../timings.h"
/*--------------------------------------------------------------------*/
int
main ( int argc, char *argv[] )
/*
-------------------------------------------------------------------
generate a random matrix and test the drop tolerance factorization.
the output is a matlab file to test correctness.
created -- 98oct08, cca
---------------------------------------------------------------------
*/
{
double droptol, nops, t1, t2 ;
Drand *drand ;
int msglvl, neqns, nitem, rc, seed, symflag, type ;
InpMtx *A ;
ILUMtx *mtxLDU ;
FILE *matlabFile, *msgFile ;
if ( argc != 10 ) {
fprintf(stdout,
"\n\n %% usage : %s msglvl msgFile type symflag "
"\n neqns nitem seed droptol matlabFile"
"\n %% msglvl -- message level"
"\n %% msgFile -- message file"
"\n %% type -- type of matrix entries"
"\n %% 1 -- real"
"\n %% 2 -- complex"
"\n %% symflag -- symmetry flag"
"\n %% 0 -- symmetric"
"\n %% 1 -- hermitian"
"\n %% 2 -- nonsymmetric"
"\n %% neqns -- number of equations"
"\n %% nitem -- number of items"
"\n %% seed -- random number seed"
"\n %% droptol -- drop tolerance"
"\n %% matlabFile -- matlab file name"
"\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) ;
}
type = atoi(argv[3]) ;
symflag = atoi(argv[4]) ;
neqns = atoi(argv[5]) ;
nitem = atoi(argv[6]) ;
seed = atoi(argv[7]) ;
droptol = atof(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 %% type -- %d"
"\n %% symflag -- %d"
"\n %% neqns -- %d"
"\n %% nitem -- %d"
"\n %% seed -- %d"
"\n %% droptol -- %e"
"\n %% matlabFile -- %s"
"\n",
argv[0], msglvl, argv[2], type, symflag,
neqns, nitem, seed, droptol, argv[9]) ;
fflush(msgFile) ;
if ( type != SPOOLES_REAL && type != SPOOLES_COMPLEX ) {
fprintf(stderr, "\n invalid value %d for type\n", type) ;
exit(-1) ;
}
switch ( symflag ) {
case SPOOLES_SYMMETRIC :
case SPOOLES_HERMITIAN :
case SPOOLES_NONSYMMETRIC :
break ;
default :
fprintf(stderr, "\n invalid value %d for symflag\n", symflag) ;
exit(-1) ;
break ;
}
if ( symflag == SPOOLES_HERMITIAN && type == SPOOLES_REAL ) {
fprintf(stderr, "\n symflag is hermitian and type is real") ;
exit(-1) ;
}
if ( neqns <= 0 || nitem <= 0 ) {
fprintf(stderr, "\n invalid value: neqns = %d, nitem = %d",
neqns, nitem) ;
exit(-1) ;
}
/*
----------------------------
initialize the matrix object
----------------------------
*/
A = InpMtx_new() ;
InpMtx_randomMatrix(A, type, INPMTX_BY_CHEVRONS, INPMTX_BY_VECTORS,
neqns, neqns, symflag, 1, nitem, seed) ;
/*
-------------------------------------------
write the assembled matrix to a matlab file
-------------------------------------------
*/
if ( matlabFile != NULL ) {
InpMtx_writeForMatlab(A, "A", matlabFile) ;
if ( symflag == SPOOLES_SYMMETRIC ) {
fprintf(matlabFile,
"\n for k = 1:%d"
"\n for j = k+1:%d"
"\n A(j,k) = A(k,j) ;"
"\n end"
"\n end", neqns, neqns) ;
} else if ( symflag == SPOOLES_HERMITIAN ) {
fprintf(matlabFile,
"\n for k = 1:%d"
"\n for j = k+1:%d"
"\n A(j,k) = ctranspose(A(k,j)) ;"
"\n end"
"\n end", neqns, neqns) ;
}
InpMtx_changeCoordType(A, INPMTX_BY_CHEVRONS) ;
InpMtx_changeStorageMode(A, INPMTX_BY_VECTORS) ;
/*
-----------------------------------------------
compute the incomplete factorization via matlab
-----------------------------------------------
*/
fprintf(msgFile, "\n\n droptol = %24.16e ;", droptol) ;
fprintf(msgFile, "\n\n [ L, D, U ] = ilu(A, droptol) ;") ;
}
/*
------------------------------------
compute the incomplete factorization
------------------------------------
*/
mtxLDU = ILUMtx_new() ;
ILUMtx_init(mtxLDU, neqns, type, symflag,
SPOOLES_BY_COLUMNS, SPOOLES_BY_ROWS) ;
nops = 0.0 ;
MARKTIME(t1) ;
rc = ILUMtx_factor(mtxLDU, A, droptol, &nops, msglvl, msgFile) ;
MARKTIME(t2) ;
fprintf(msgFile,
"\n %% CPU %8.3f : compute ILU, %.0f operations, %.2f mflops\n",
t2 - t1, nops, 1.e-6*nops/(t2 - t1)) ;
if ( rc != 1 ) {
fprintf(stderr, "\n error return %d from ILUMtx_factor()", rc) ;
return(rc) ;
}
if ( matlabFile != NULL ) {
rc = ILUMtx_writeForMatlab(mtxLDU, "Lhat", "Dhat", "Uhat",
matlabFile) ;
/*
-----------------
compute the error
-----------------
*/
fprintf(matlabFile, "\n\n errorL = max(max(abs(Lhat - L))) ;") ;
fprintf(matlabFile, "\n\n errorD = max(max(abs(Dhat - D))) ;") ;
fprintf(matlabFile, "\n\n errorU = max(max(abs(Uhat - U))) ;") ;
fprintf(matlabFile, "\n\n error = [ errorL errorD errorU ]") ;
}
/*
------------------------
free the working storage
------------------------
*/
InpMtx_free(A) ;
ILUMtx_free(mtxLDU) ;
fclose(msgFile) ;
return(1) ; }
/*--------------------------------------------------------------------*/
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