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/* solveSetup.c */
#include "../BridgeMPI.h"
/*--------------------------------------------------------------------*/
/*
-----------------------------------------------
purpose -- to setup for the parallel solve
return value ---
1 -- normal return
-1 -- bridge is NULL
-2 -- frontmtx is NULL
-3 -- frontmtx has not yet been postprocessed
created -- 98sep24, cca
-----------------------------------------------
*/
int
BridgeMPI_solveSetup (
BridgeMPI *bridge
) {
double t0, t1, t2 ;
FILE *msgFile ;
FrontMtx *frontmtx ;
int firsttag, msglvl, myid, nproc ;
int stats[4] ;
IV *ownersIV ;
MPI_Comm comm ;
SolveMap *solvemap ;
/*
---------------
check the input
---------------
*/
MARKTIME(t0) ;
if ( bridge == NULL ) {
fprintf(stderr, "\n\n error in BridgeMPI_solveSetup()"
"\n bridge is NULL\n") ;
return(-1) ;
}
if ( (frontmtx = bridge->frontmtx) == NULL ) {
fprintf(stderr, "\n\n error in BridgeMPI_solveSetup()"
"\n frontmtx is NULL\n") ;
return(-2) ;
}
if ( ! FRONTMTX_IS_2D_MODE(frontmtx) ) {
fprintf(stderr, "\n\n error in BridgeMPI_solveSetup()"
"\n frontmtx must be in 2-D mode\n") ;
return(-2) ;
}
msglvl = bridge->msglvl ;
msgFile = bridge->msgFile ;
myid = bridge->myid ;
comm = bridge->comm ;
nproc = bridge->nproc ;
ownersIV = bridge->ownersIV ;
if ( (solvemap = bridge->solvemap) == NULL ) {
solvemap = bridge->solvemap = SolveMap_new() ;
} else {
SolveMap_clearData(solvemap) ;
}
if ( FRONTMTX_IS_NONSYMMETRIC(frontmtx)
&& FRONTMTX_IS_PIVOTING(frontmtx) ) {
SolveMap_ddMap(solvemap, SPOOLES_NONSYMMETRIC,
frontmtx->upperblockIVL, frontmtx->lowerblockIVL,
nproc, ownersIV, frontmtx->tree,
bridge->seed, msglvl, msgFile) ;
} else {
SolveMap_ddMap(solvemap, SPOOLES_SYMMETRIC,
frontmtx->upperblockIVL, NULL,
nproc, ownersIV, frontmtx->tree,
bridge->seed, msglvl, msgFile) ;
}
if ( msglvl > 1 ) {
fprintf(msgFile, "\n\n solve map created") ;
fflush(msgFile) ;
}
if ( msglvl > 3 ) {
fprintf(msgFile, "\n\n SolveMap") ;
SolveMap_writeForHumanEye(solvemap, msgFile) ;
fflush(msgFile) ;
}
/*
----------------------
split the front matrix
----------------------
*/
IVzero(4, stats) ;
firsttag = 0 ;
MARKTIME(t1) ;
FrontMtx_MPI_split(frontmtx, solvemap, stats, msglvl, msgFile,
firsttag, comm) ;
MARKTIME(t2) ;
if ( msglvl > 1 ) {
fprintf(msgFile, "\n\n CPU %8.3f : split the matrix", t2 - t1) ;
fflush(msgFile) ;
}
if ( msglvl > 2 ) {
fprintf(msgFile, "\n\n submatrix manager after split") ;
SubMtxManager_writeForHumanEye(frontmtx->manager, msgFile) ;
fflush(msgFile) ;
}
if ( msglvl > 3 ) {
fprintf(msgFile, "\n\n frontmtx after split") ;
FrontMtx_writeForHumanEye(frontmtx, msgFile) ;
fflush(msgFile) ;
}
/*
---------------------------------------
generate bridge->rowmapIV, the map from
rows of the factor to owning processors
---------------------------------------
*/
if ( FRONTMTX_IS_PIVOTING(bridge->frontmtx) ) {
/*
-----------------------------------------
factorization done with pivoting, row map
is different than for the original matrix
-----------------------------------------
*/
if ( bridge->rowmapIV == NULL ) {
/*
------------------------------------------------
this is the first solve since the factorization,
create the rowmap IV object
------------------------------------------------
*/
bridge->rowmapIV = FrontMtx_MPI_rowmapIV(frontmtx, ownersIV,
msglvl, msgFile, comm) ;
}
} else {
/*
-------------------------------------------
no pivoting, map is simply the original map
-------------------------------------------
*/
bridge->rowmapIV = bridge->vtxmapIV ;
}
if ( msglvl > 2 ) {
fprintf(msgFile, "\n\n row map IV object") ;
IV_writeForHumanEye(bridge->rowmapIV, msgFile) ;
fflush(msgFile) ;
}
/*
-----------------------------------------
create ownedColumnsIV, a vector of column
ids that are owned by this processor.
-----------------------------------------
*/
bridge->ownedColumnsIV = FrontMtx_ownedColumnsIV(frontmtx, myid,
ownersIV, msglvl, msgFile) ;
if ( msglvl > 2 ) {
fprintf(msgFile, "\n\n ownedColumns IV object") ;
IV_writeForHumanEye(bridge->ownedColumnsIV, msgFile) ;
fflush(msgFile) ;
}
/*
-----------------------------------------
create DenseMtx objects to hold the local
solution and right hand side matrices
-----------------------------------------
*/
bridge->Xloc = DenseMtx_new() ;
bridge->Yloc = DenseMtx_new() ;
MARKTIME(t2) ;
bridge->cpus[14] += t2 - t0 ;
return(1) ; }
/*--------------------------------------------------------------------*/
|
