static void
do_test(MAP *rmap, MAP *cmap)
{
MAT *A;
VEC *x, *y;
INT i, j, m0, n0;
INT *cols = phgAlloc(cmap->nglobal * sizeof(*cols));
FLOAT *data = phgAlloc(cmap->nglobal * sizeof(*data));
A = phgMapCreateMat(rmap, cmap);
m0 = A->rmap->partition[A->rmap->rank];
n0 = A->cmap->partition[A->cmap->rank];
/* Matrix entries: A(I,J) = 1 + (I-1) + (J-1) */
for (i = m0; i < m0 + A->rmap->nlocal; i++) {
#if 0
/* Test MatAddEntry */
for (j = 0; j < A->cmap->nglobal; j++)
phgMatAddGlobalEntry(A, i, j, 1.0 + i + j);
#else
/* Test MatAddEntries */
for (j = 0; j < A->cmap->nglobal; j++) {
cols[j] = j;
data[j] = 1.0 + i + j;
}
phgMatAddGlobalEntries(A, 1, &i, A->cmap->nglobal, cols, data);
#endif
}
phgFree(cols);
phgFree(data);
phgMatAssemble(A);
phgInfo(-1, "y = A * x\n");
x = phgMapCreateVec(A->cmap, 1);
for (i = 0; i < x->map->nlocal; i++)
x->data[i] = 1.0 + i + n0;
phgVecAssemble(x);
y = phgMatVec(MAT_OP_N, 1.0, A, x, 0.0, NULL);
for (i = 0; i < y->map->nlocal; i++)
phgInfo(-1, " y->data[%d] = %lg\n", i + m0, (double)y->data[i]);
phgVecDestroy(&x);
phgVecDestroy(&y);
phgInfo(-1, "y = A' * x\n");
x = phgMapCreateVec(A->rmap, 1);
for (i = 0; i < x->map->nlocal; i++)
x->data[i] = 1.0 + i + m0;
phgVecAssemble(x);
y = phgMatVec(MAT_OP_T, 1.0, A, x, 0.0, NULL);
for (i = 0; i < y->map->nlocal; i++)
phgInfo(-1, " y->data[%d] = %lg\n", i + n0, (double)y->data[i]);
phgVecDestroy(&x);
phgVecDestroy(&y);
phgMatDestroy(&A);
}
int
main(int argc, char *argv[])
{
GRID *g;
DOF *u_h;
MAT *A, *A0, *B;
MAP *map;
INT i;
size_t nnz, mem, mem_peak;
VEC *x, *y0, *y1, *y2;
double t0, t1, dnz, dnz1, mflops, mop;
char *fn = "../test/cube.dat";
FLOAT mem_max = 300;
INT refine = 0;
phgOptionsRegisterFilename("-mesh_file", "Mesh file", (char **)&fn);
phgOptionsRegisterInt("-loop_count", "Loop count", &loop_count);
phgOptionsRegisterInt("-refine", "Refinement level", &refine);
phgOptionsRegisterFloat("-mem_max", "Maximum memory", &mem_max);
phgInit(&argc, &argv);
g = phgNewGrid(-1);
if (!phgImport(g, fn, FALSE))
phgError(1, "can't read file \"%s\".\n", fn);
phgRefineAllElements(g, refine);
u_h = phgDofNew(g, DOF_DEFAULT, 1, "u_h", DofNoAction);
while (TRUE) {
phgPrintf("\n");
if (phgBalanceGrid(g, 1.2, 1, NULL, 0.))
phgPrintf("Repartition mesh, %d submeshes, load imbalance: %lg\n",
g->nprocs, (double)g->lif);
map = phgMapCreate(u_h, NULL);
A = phgMapCreateMat(map, map);
A->handle_bdry_eqns = TRUE;
build_matrix(A, u_h);
phgMatAssemble(A);
/* Note: A is unsymmetric (A' != A) if boundary entries not removed */
phgMatRemoveBoundaryEntries(A);
#if 0
/* test block matrix operation */
A0 = phgMatCreateBlockMatrix(g->comm, 1, 1, &A, NULL);
#else
A0 = A;
#endif
phgPrintf("%d DOF, %d elems, %d submeshes, matrix size: %d, LIF: %lg\n",
DofGetDataCountGlobal(u_h), g->nleaf_global,
g->nprocs, A->rmap->nglobal, (double)g->lif);
/* test PHG mat-vec multiply */
x = phgMapCreateVec(A->cmap, 1);
y1 = phgMapCreateVec(A->rmap, 1);
phgVecRandomize(x, 123);
phgMatVec(MAT_OP_N, 1.0, A0, x, 0.0, &y1);
phgPerfGetMflops(g, NULL, NULL); /* reset flops counter */
t0 = phgGetTime(NULL);
for (i = 0; i < loop_count; i++) {
phgMatVec(MAT_OP_N, 1.0, A0, x, 0.0, &y1);
}
t1 = phgGetTime(NULL);
mflops = phgPerfGetMflops(g, NULL, NULL);
y0 = phgVecCopy(y1, NULL);
nnz = A->nnz_d + A->nnz_o;
#if USE_MPI
dnz1 = nnz;
MPI_Reduce(&dnz1, &dnz, 1, MPI_DOUBLE, MPI_SUM, 0, g->comm);
#else
dnz = nnz;
#endif
mop = loop_count * (dnz + dnz - A->rmap->nlocal) * 1e-6;
phgPrintf("\n");
t1 -= t0;
phgPrintf(" PHG: time %0.4lf, nnz %0.16lg, %0.2lfMF (%0.2lfMF)\n",
t1, dnz, mop / (t1 == 0 ? 1. : t1), mflops);
/* test trans(A)*x */
phgPerfGetMflops(g, NULL, NULL); /* reset flops counter */
t0 = phgGetTime(NULL);
for (i = 0; i < loop_count; i++) {
phgMatVec(MAT_OP_T, 1.0, A0, x, 0.0, &y1);
}
t1 = phgGetTime(NULL);
mflops = phgPerfGetMflops(g, NULL, NULL);
t1 -= t0;
phgPrintf(" A'*x: time %0.4lf, nnz %0.16lg, %0.2lfMF (%0.2lfMF), "
"err: %le\n", t1, dnz, mop / (t1 == 0 ? 1. : t1), mflops,
(double)phgVecNorm2(phgVecAXPBY(-1.0, y0, 1.0, &y1), 0, NULL));
/* time A * trans(A) */
phgPerfGetMflops(g, NULL, NULL); /* reset flops counter */
t0 = phgGetTime(NULL);
B = phgMatMat(MAT_OP_N, MAT_OP_N, 1.0, A, A, 0.0, NULL);
t1 = phgGetTime(NULL);
mflops = phgPerfGetMflops(g, NULL, NULL);
nnz = B->nnz_d + B->nnz_o;
#if USE_MPI
dnz1 = nnz;
MPI_Reduce(&dnz1, &dnz, 1, MPI_DOUBLE, MPI_SUM, 0, g->comm);
#else
dnz = nnz;
#endif
/* compare B*x <--> A*A*x */
y2 = phgMatVec(MAT_OP_N, 1.0, B, x, 0.0, NULL);
phgMatVec(MAT_OP_N, 1.0, A0, y0, 0.0, &y1);
phgMatDestroy(&B);
t1 -= t0;
phgPrintf(" A*A: time %0.4lf, nnz %0.16lg, %0.2lfMF, err: %le\n",
t1, dnz, mflops,
(double)phgVecNorm2(phgVecAXPBY(-1.0, y1, 1.0, &y2), 0, NULL));
#if USE_PETSC
{
Mat ma, mb;
MatInfo info;
Vec va, vb, vc;
PetscScalar *vec;
ma = phgPetscCreateMatAIJ(A);
MatGetVecs(ma, PETSC_NULL, &va);
VecDuplicate(va, &vb);
VecGetArray(va, &vec);
memcpy(vec, x->data, x->map->nlocal * sizeof(*vec));
VecRestoreArray(va, &vec);
MatMult(ma, va, vb);
phgPerfGetMflops(g, NULL, NULL); /* reset flops counter */
t0 = phgGetTime(NULL);
for (i = 0; i < loop_count; i++) {
MatMult(ma, va, vb);
}
t1 = phgGetTime(NULL);
mflops = phgPerfGetMflops(g, NULL, NULL);
VecGetArray(vb, &vec);
memcpy(y1->data, vec, x->map->nlocal * sizeof(*vec));
VecRestoreArray(vb, &vec);
MatGetInfo(ma, MAT_GLOBAL_SUM, &info);
/*phgPrintf(" --------------------------------------------"
"-------------------------\n");*/
phgPrintf("\n");
t1 -= t0;
dnz = info.nz_used;
phgPrintf(" PETSc: time %0.4lf, nnz %0.16lg, %0.2lfMF (%0.2lfMF), "
"err: %le\n", t1, dnz, mop / (t1==0 ? 1.:t1), mflops,
(double)phgVecNorm2(phgVecAXPBY(-1.0, y0, 1.0, &y1), 0, NULL));
phgPerfGetMflops(g, NULL, NULL); /* reset flops counter */
t0 = phgGetTime(NULL);
for (i = 0; i < loop_count; i++) {
MatMultTranspose(ma, va, vb);
}
t1 = phgGetTime(NULL);
mflops = phgPerfGetMflops(g, NULL, NULL);
VecGetArray(vb, &vec);
memcpy(y1->data, vec, x->map->nlocal * sizeof(*vec));
VecRestoreArray(vb, &vec);
t1 -= t0;
phgPrintf(" A'*x: time %0.4lf, nnz %0.16lg, %0.2lfMF (%0.2lfMF), "
"err: %le\n", t1, dnz, mop / (t1==0 ? 1.:t1), mflops,
(double)phgVecNorm2(phgVecAXPBY(-1.0, y0, 1.0, &y1), 0, NULL));
phgPerfGetMflops(g, NULL, NULL); /* reset flops counter */
t0 = phgGetTime(NULL);
MatMatMult(ma, ma, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &mb);
t1 = phgGetTime(NULL);
mflops = phgPerfGetMflops(g, NULL, NULL);
t1 -= t0;
MatGetInfo(mb, MAT_GLOBAL_SUM, &info);
dnz = info.nz_used;
VecDuplicate(va, &vc);
/* compare B*x <--> A*A*x */
MatMult(ma, vb, vc);
MatMult(mb, va, vb);
VecGetArray(vb, &vec);
memcpy(y1->data, vec, x->map->nlocal * sizeof(*vec));
VecRestoreArray(vb, &vec);
VecGetArray(vc, &vec);
memcpy(y2->data, vec, x->map->nlocal * sizeof(*vec));
VecRestoreArray(vc, &vec);
phgPrintf(" A*A: time %0.4lf, nnz %0.16lg, %0.2lfMF, err: %le\n",
t1, dnz, mflops,
(double)phgVecNorm2(phgVecAXPBY(-1.0, y1, 1.0, &y2), 0, NULL));
phgPetscMatDestroy(&mb);
phgPetscMatDestroy(&ma);
phgPetscVecDestroy(&va);
phgPetscVecDestroy(&vb);
phgPetscVecDestroy(&vc);
}
#endif /* USE_PETSC */
#if USE_HYPRE
{
HYPRE_IJMatrix ma;
HYPRE_IJVector va, vb, vc;
HYPRE_ParCSRMatrix par_ma;
hypre_ParCSRMatrix *par_mb;
HYPRE_ParVector par_va, par_vb, par_vc;
HYPRE_Int offset, *ni, start, end;
assert(sizeof(INT)==sizeof(int) && sizeof(FLOAT)==sizeof(double));
setup_hypre_mat(A, &ma);
ni = phgAlloc(2 * A->rmap->nlocal * sizeof(*ni));
offset = A->cmap->partition[A->cmap->rank];
for (i = 0; i < A->rmap->nlocal; i++)
ni[i] = i + offset;
HYPRE_IJVectorCreate(g->comm, offset, offset + A->rmap->nlocal - 1,
&va);
HYPRE_IJVectorCreate(g->comm, offset, offset + A->rmap->nlocal - 1,
&vb);
HYPRE_IJVectorCreate(g->comm, offset, offset + A->rmap->nlocal - 1,
&vc);
HYPRE_IJVectorSetObjectType(va, HYPRE_PARCSR);
HYPRE_IJVectorSetObjectType(vb, HYPRE_PARCSR);
HYPRE_IJVectorSetObjectType(vc, HYPRE_PARCSR);
HYPRE_IJVectorSetMaxOffProcElmts(va, 0);
HYPRE_IJVectorSetMaxOffProcElmts(vb, 0);
HYPRE_IJVectorSetMaxOffProcElmts(vc, 0);
HYPRE_IJVectorInitialize(va);
HYPRE_IJVectorInitialize(vb);
HYPRE_IJVectorInitialize(vc);
HYPRE_IJMatrixGetObject(ma, (void **)(void *)&par_ma);
HYPRE_IJVectorGetObject(va, (void **)(void *)&par_va);
HYPRE_IJVectorGetObject(vb, (void **)(void *)&par_vb);
HYPRE_IJVectorGetObject(vc, (void **)(void *)&par_vc);
HYPRE_IJVectorSetValues(va, A->cmap->nlocal, ni, (double *)x->data);
HYPRE_IJVectorAssemble(va);
HYPRE_IJVectorAssemble(vb);
HYPRE_IJVectorAssemble(vc);
HYPRE_IJMatrixGetRowCounts(ma, A->cmap->nlocal,
ni, ni + A->rmap->nlocal);
for (i = 0, nnz = 0; i < A->rmap->nlocal; i++)
nnz += ni[A->rmap->nlocal + i];
#if USE_MPI
dnz1 = nnz;
MPI_Reduce(&dnz1, &dnz, 1, MPI_DOUBLE, MPI_SUM, 0, g->comm);
#else
dnz = nnz;
#endif
HYPRE_ParCSRMatrixMatvec(1.0, par_ma, par_va, 0.0, par_vb);
phgPerfGetMflops(g, NULL, NULL); /* reset flops counter */
t0 = phgGetTime(NULL);
for (i = 0; i < loop_count; i++) {
HYPRE_ParCSRMatrixMatvec(1.0, par_ma, par_va, 0.0, par_vb);
}
t1 = phgGetTime(NULL);
mflops = phgPerfGetMflops(g, NULL, NULL);
HYPRE_IJVectorGetValues(vb, A->rmap->nlocal, ni, (double*)y1->data);
/*phgPrintf(" --------------------------------------------"
"-------------------------\n");*/
phgPrintf("\n");
t1 -= t0;
phgPrintf(" HYPRE: time %0.4lf, nnz %0.16lg, %0.2lfMF (%0.2lfMF), "
"err: %le\n", t1, dnz, mop / (t1==0 ? 1.:t1), mflops,
(double)phgVecNorm2(phgVecAXPBY(-1.0, y0, 1.0, &y1), 0, NULL));
phgPerfGetMflops(g, NULL, NULL); /* reset flops counter */
t0 = phgGetTime(NULL);
for (i = 0; i < loop_count; i++) {
HYPRE_ParCSRMatrixMatvecT(1.0, par_ma, par_va, 0.0, par_vb);
}
t1 = phgGetTime(NULL);
mflops = phgPerfGetMflops(g, NULL, NULL);
HYPRE_IJVectorGetValues(vb, A->rmap->nlocal, ni, (double*)y1->data);
t1 -= t0;
phgPrintf(" A'*x: time %0.4lf, nnz %0.16lg, %0.2lfMF (%0.2lfMF), "
"err: %le\n", t1, dnz, mop / (t1==0 ? 1.:t1), mflops,
(double)phgVecNorm2(phgVecAXPBY(-1.0, y0, 1.0, &y1), 0, NULL));
phgPerfGetMflops(g, NULL, NULL); /* reset flops counter */
t0 = phgGetTime(NULL);
/* Note: 'HYPRE_ParCSRMatrix' is currently typedef'ed to
* 'hypre_ParCSRMatrix *' */
par_mb = hypre_ParMatmul((hypre_ParCSRMatrix *)par_ma,
(hypre_ParCSRMatrix *)par_ma);
t1 = phgGetTime(NULL);
mflops = phgPerfGetMflops(g, NULL, NULL);
start = hypre_ParCSRMatrixFirstRowIndex(par_mb);
end = hypre_ParCSRMatrixLastRowIndex(par_mb) + 1;
for (i = start, nnz = 0; i < end; i++) {
HYPRE_Int ncols;
hypre_ParCSRMatrixGetRow(par_mb, i, &ncols, NULL, NULL);
hypre_ParCSRMatrixRestoreRow(par_mb, i, &ncols, NULL, NULL);
nnz += ncols;
}
#if USE_MPI
dnz1 = nnz;
MPI_Reduce(&dnz1, &dnz, 1, MPI_DOUBLE, MPI_SUM, 0, g->comm);
#else
dnz = nnz;
#endif
/* compare B*x <--> A*A*x */
HYPRE_ParCSRMatrixMatvec(1.0, par_ma, par_vb, 0.0, par_vc);
HYPRE_ParCSRMatrixMatvec(1.0, (void *)par_mb, par_va, 0.0, par_vb);
HYPRE_IJVectorGetValues(vb, A->rmap->nlocal, ni, (double*)y1->data);
HYPRE_IJVectorGetValues(vc, A->rmap->nlocal, ni, (double*)y2->data);
hypre_ParCSRMatrixDestroy((par_mb));
t1 -= t0;
phgPrintf(" A*A: time %0.4lf, nnz %0.16lg, %0.2lfMF, err: %le\n",
t1, dnz, mflops,
(double)phgVecNorm2(phgVecAXPBY(-1.0, y1, 1.0, &y2), 0, NULL));
phgFree(ni);
HYPRE_IJMatrixDestroy(ma);
HYPRE_IJVectorDestroy(va);
HYPRE_IJVectorDestroy(vb);
HYPRE_IJVectorDestroy(vc);
}
#endif /* USE_HYPRE */
if (A0 != A)
phgMatDestroy(&A0);
#if 0
if (A->rmap->nglobal > 1000) {
VEC *v = phgMapCreateVec(A->rmap, 3);
for (i = 0; i < v->map->nlocal; i++) {
v->data[i + 0 * v->map->nlocal] = 1 * (i + v->map->partition[g->rank]);
v->data[i + 1 * v->map->nlocal] = 2 * (i + v->map->partition[g->rank]);
v->data[i + 2 * v->map->nlocal] = 3 * (i + v->map->partition[g->rank]);
}
phgMatDumpMATLAB(A, "A", "A.m");
phgVecDumpMATLAB(v, "v", "v.m");
phgFinalize();
exit(0);
}
#endif
phgMatDestroy(&A);
phgVecDestroy(&x);
phgVecDestroy(&y0);
phgVecDestroy(&y1);
phgVecDestroy(&y2);
phgMapDestroy(&map);
mem = phgMemoryUsage(g, &mem_peak);
dnz = mem / (1024.0 * 1024.0);
dnz1 = mem_peak / (1024.0 * 1024.0);
/*phgPrintf(" --------------------------------------------"
"-------------------------\n");*/
phgPrintf("\n");
phgPrintf(" Memory: current %0.4lgMB, peak %0.4lgMB\n", dnz, dnz1);
#if 0
{
static int loop_count = 0;
if (++loop_count == 4)
break;
}
#endif
if (mem_peak > 1024 * (size_t)1024 * mem_max)
break;
phgRefineAllElements(g, 1);
}
phgDofFree(&u_h);
phgFreeGrid(&g);
phgFinalize();
return 0;
}
void phgNSInitPc(NSSolver *ns)
{
GRID *g = ns->g;
MAP *Pmap = ns->Pmap, *Pbcmap;
BOOLEAN use_Fu = _nsp->use_Fu;
int verb;
/* pcd boundary type test */
_pcd->dof_inflow = phgDofNew(g, _nsp->ptype, 1, "dof inflow", DofNoAction);
_pcd->dof_outflow = phgDofNew(g, _nsp->ptype, 1, "dof outflow", DofNoAction);
_pcd->dof_nobdry = phgDofNew(g, _nsp->ptype, 1, "dof nobdry", DofNoAction);
phgDofSetDirichletBoundaryMask(_pcd->dof_inflow, INFLOW);
phgDofSetDirichletBoundaryMask(_pcd->dof_outflow, OUTFLOW);
phgDofSetDirichletBoundaryMask(_pcd->dof_nobdry, 0);
_pcd->map_inflow = phgMapCreate(_pcd->dof_inflow, NULL);
_pcd->map_outflow = phgMapCreate(_pcd->dof_outflow, NULL);
_pcd->map_nobdry = phgMapCreate(_pcd->dof_nobdry, NULL);
_pcd->Pbcmap = phgMapCreate(_pcd->pbc, NULL);
Pbcmap = _pcd->Pbcmap;
Unused(Pmap);
#warning PCD B.C.: step 1. build mat using map...
/*
* PCD boundary setup: should be consistent with code above
*/
if (_nsp->pin_node) {
_pcd->matFp = phgMapCreateMat(Pbcmap, Pbcmap);
_pcd->matAp = phgMapCreateMat(Pbcmap, Pbcmap);
_pcd->matQp = phgMapCreateMat(Pbcmap, Pbcmap);
} else {
//_pcd->matAp = phgMapCreateMat(_pcd->map_inflow, _pcd->map_inflow);
//_pcd->matFp = phgMapCreateMat(_pcd->map_inflow, _pcd->map_inflow);
_pcd->matFp = phgMapCreateMat(_pcd->map_outflow, _pcd->map_outflow);
_pcd->matAp = phgMapCreateMat(_pcd->map_outflow, _pcd->map_outflow);
//_pcd->matQp = phgMapCreateMat(_pcd->map_outflow, _pcd->map_outflow);
//_pcd->matQp = phgMapCreateMat(_pcd->map_inflow, _pcd->map_inflow);
//_pcd->matFp = phgMapCreateMat(_pcd->map_nobdry, _pcd->map_nobdry);
//_pcd->matAp = phgMapCreateMat(_pcd->map_nobdry, _pcd->map_nobdry);
//_pcd->matFp = phgMapCreateMat(_pcd->map_nobdry, _pcd->map_nobdry);
_pcd->matQp = phgMapCreateMat(_pcd->map_nobdry, _pcd->map_nobdry);
}
/* stokes problem: get SYMETRIC mat when assemble.
* Handle_bdry_eqns means mat is composed with row of boundary row
* and non-bdry row, and eliminating mat columes of dirichlet dof.
*/
if (_nsp->use_symetric) {
_pcd->matFp->handle_bdry_eqns = TRUE;
_pcd->matAp->handle_bdry_eqns = TRUE;
_pcd->matQp->handle_bdry_eqns = TRUE;
}
/* genearl NS: no need to eliminate mat columes of dirichlet dof */
else {
_pcd->matFp->handle_bdry_eqns = FALSE;
_pcd->matAp->handle_bdry_eqns = FALSE;
_pcd->matQp->handle_bdry_eqns = FALSE;
}
_pcd->rhsScale = phgMapCreateVec(_pcd->matQp->rmap, 1);
phgVecDisassemble(_pcd->rhsScale);
ns->pc = phgMat2Solver(SOLVER_PreOnly, ns->solver_u->mat);
if (_nsp->use_PCD)
phgSolverSetPC(ns->solver_u, ns->pc, pc_proc);
/* solver F */
phgOptionsPush();
phgOptionsSetOptions("-solver hypre "
"-hypre_solver pcg "
"-hypre_pc boomeramg "
"-solver_maxit 10 "
"-solver_rtol 1e-4");
phgOptionsSetOptions(_nsp->F_opts);
/* use matF in the preconditioning matrix */
_pcd->solver_F = phgMat2Solver(SOLVER_DEFAULT, ns->matF);
_pcd->solver_F->verb = SUB_SOLVER_VERB; /* Set user options. */
_pcd->pc_F = NULL;
#if USE_MG
if (ns_params->use_mg_F) {
MAT *matF = ns->matF;
assert(ns_params->use_PCD && !ns_params->use_Fu);
_pcd->pc_F = phgMat2Solver(SOLVER_PreOnly, matF);
phgOptionsSetOptions("-solver petsc ");
matF->mv_data = phgAlloc(sizeof(*matF->mv_data));
matF->mv_data[0] = (void *) ns->mg;
phgSolverSetPC(_pcd->solver_F, _pcd->pc_F, mg_pc_proc);
}
#endif /* USE_MG */
_pcd->solver_F->warn_maxit = FALSE;
phgOptionsPop();
/* solver Ap */
phgOptionsPush();
phgOptionsSetOptions("-solver hypre "
"-hypre_solver gmres "
"-hypre_pc boomeramg "
"-solver_maxit 10 "
"-solver_rtol 1e-3");
phgOptionsSetOptions(_nsp->Ap_opts);
_pcd->solver_Ap = phgMat2Solver(SOLVER_DEFAULT, _pcd->matAp);
_pcd->solver_Ap->warn_maxit = FALSE;
_pcd->solver_Ap->verb = SUB_SOLVER_VERB;
phgOptionsPop();
_pcd->pc_Ap = NULL;
#if USE_MG
if (ns_params->use_mg_Ap) {
MAT *matAp = _pcd->matAp;
assert(ns_params->use_PCD);
_pcd->pc_Ap = phgMat2Solver(SOLVER_PreOnly, matAp);
phgOptionsSetOptions("-solver petsc ");
matAp->mv_data = phgAlloc(sizeof(*matAp->mv_data));
matAp->mv_data[0] = (void *) ns->mg;
phgSolverSetPC(_pcd->solver_Ap, _pcd->pc_Ap, mg_pc_proc);
}
#endif /* USE_MG */
/* solver Qp */
phgOptionsPush();
phgOptionsSetOptions("-solver hypre "
"-hypre_solver pcg "
"-hypre_pc boomeramg "
"-solver_maxit 10 "
"-solver_rtol 1e-3");
phgOptionsSetOptions(_nsp->Qp_opts);
_pcd->solver_Qp = phgMat2Solver(SOLVER_DEFAULT, _pcd->matQp);
_pcd->solver_Qp->warn_maxit = FALSE;
_pcd->solver_Qp->verb = SUB_SOLVER_VERB;
phgOptionsPop();
_pcd->pc_Qp = NULL;
#if USE_MG
if (ns_params->use_mg_Qp) {
MAT *matQp = _pcd->matQp;
assert(ns_params->use_PCD);
_pcd->pc_Qp = phgMat2Solver(SOLVER_PreOnly, matQp);
phgOptionsSetOptions("-solver petsc ");
matQp->mv_data = phgAlloc(sizeof(*matQp->mv_data));
matQp->mv_data[0] = (void *) ns->mg;
phgSolverSetPC(_pcd->solver_Qp, _pcd->pc_Qp, mg_pc_proc);
}
#endif /* USE_MG */
/* Fu for solve F^{-1} */
if (use_Fu) { /* _nsp->implicit_centrip && */
DOF *u1;
MAP *u1map;
MAT *matFu;
u1 = _pcd->u1 =
phgDofNew(g, _nsp->utype, 1, "velocity component u", DofNoAction);
phgDofSetDirichletBoundaryMask(u1, SETFLOW);
u1map = _pcd->u1map
= phgMapCreate(_pcd->u1, NULL);
matFu = _pcd->matFu
= phgMapCreateMat(u1map, u1map);
if (_nsp->use_symetric)
matFu->handle_bdry_eqns = TRUE;
/* solver Fu */
phgOptionsPush();
phgOptionsSetOptions("-solver hypre "
"-hypre_solver pcg "
"-hypre_pc boomeramg "
"-solver_maxit 10 "
"-solver_rtol 1e-4");
phgOptionsSetOptions(_nsp->Fu_opts);
_pcd->solver_Fu = phgMat2Solver(SOLVER_DEFAULT, _pcd->matFu);
_pcd->solver_Fu->warn_maxit = FALSE;
_pcd->solver_Fu->verb = SUB_SOLVER_VERB;
phgOptionsPop();
}
return;
}
