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amdis
Commit 805f4b62 authored by Thomas Witkowski's avatar Thomas Witkowski
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Added FETI-DP timings.

parent d00516d6
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Showing with 166 additions and 80 deletions
AMDiS/src/parallel/PetscSolverFeti.cc
View file @ 805f4b62
......@@ -189,10 +189,11 @@ namespace AMDiS {
: PetscSolver(),
schurPrimalSolver(0),
multiLevelTest(false),
subDomainSolver(NULL),
subdomain(NULL),
meshLevel(0),
rStartInterior(0),
nGlobalOverallInterior(0)
nGlobalOverallInterior(0),
printTimings(false)
{
FUNCNAME("PetscSolverFeti::PetscSolverFeti()");
......@@ -220,6 +221,8 @@ namespace AMDiS {
Parameters::get("parallel->multi level test", multiLevelTest);
if (multiLevelTest)
meshLevel = 1;
Parameters::get("parallel->print timings", printTimings);
}
......@@ -232,17 +235,17 @@ namespace AMDiS {
MeshLevelData& levelData = meshDistributor->getMeshLevelData();
if (subDomainSolver == NULL) {
subDomainSolver = new PetscSolverGlobalMatrix();
if (subdomain == NULL) {
subdomain = new PetscSolverGlobalMatrix();
if (meshLevel == 0) {
subDomainSolver->setMeshDistributor(meshDistributor,
subdomain->setMeshDistributor(meshDistributor,
mpiCommGlobal, mpiCommLocal);
} else {
subDomainSolver->setMeshDistributor(meshDistributor,
subdomain->setMeshDistributor(meshDistributor,
levelData.getMpiComm(meshLevel - 1),
levelData.getMpiComm(meshLevel));
subDomainSolver->setLevel(meshLevel);
subdomain->setLevel(meshLevel);
}
}
......@@ -289,6 +292,8 @@ namespace AMDiS {
{
FUNCNAME("PetscSolverFeti::createFetiData()");
double timeCounter = MPI::Wtime();
TEST_EXIT(meshDistributor)("No mesh distributor object defined!\n");
TEST_EXIT(meshDistributor->getFeSpaces().size() > 0)
("No FE space defined in mesh distributor!\n");
......@@ -384,7 +389,13 @@ namespace AMDiS {
}
// If multi level test, inform sub domain solver about coarse space.
subDomainSolver->setDofMapping(&localDofMap, &primalDofMap);
subdomain->setDofMapping(&localDofMap, &primalDofMap);
if (printTimings) {
timeCounter = MPI::Wtime() - timeCounter;
MSG("FETI-DP timing 01: %.5f seconds (creation of basic data structures)",
timeCounter);
}
}
......@@ -644,6 +655,8 @@ namespace AMDiS {
{
FUNCNAME("PetscSolverFeti::createMatLagrange()");
double wtime = MPI::Wtime();
// === Create distributed matrix for Lagrange constraints. ===
MatCreateMPIAIJ(mpiCommGlobal,
......@@ -694,6 +707,10 @@ namespace AMDiS {
MatAssemblyBegin(mat_lagrange, MAT_FINAL_ASSEMBLY);
MatAssemblyEnd(mat_lagrange, MAT_FINAL_ASSEMBLY);
if (printTimings)
MSG("FETI-DP timing 05: %.5f seconds (creation of lagrange constraint matrix)\n",
MPI::Wtime() - wtime);
}
......@@ -704,7 +721,7 @@ namespace AMDiS {
if (schurPrimalSolver == 0) {
MSG("Create iterative schur primal solver!\n");
schurPrimalData.subSolver = subDomainSolver;
schurPrimalData.subSolver = subdomain;
VecCreateMPI(mpiCommGlobal,
localDofMap.getRankDofs(),
......@@ -757,13 +774,13 @@ namespace AMDiS {
for (int i = 0; i < nRowsRankB; i++) {
PetscInt row = localDofMap.getStartDofs() + i;
MatGetRow(subDomainSolver->getMatIntCoarse(), row, &nCols, &cols, &values);
MatGetRow(subdomain->getMatIntCoarse(), row, &nCols, &cols, &values);
for (int j = 0; j < nCols; j++)
if (values[j] != 0.0)
mat_b_primal_cols[cols[j]].push_back(make_pair(i, values[j]));
MatRestoreRow(subDomainSolver->getMatIntCoarse(), row, &nCols, &cols, &values);
MatRestoreRow(subdomain->getMatIntCoarse(), row, &nCols, &cols, &values);
}
TEST_EXIT(static_cast<int>(mat_b_primal_cols.size()) ==
......@@ -782,7 +799,7 @@ namespace AMDiS {
VecAssemblyBegin(tmpVec);
VecAssemblyEnd(tmpVec);
subDomainSolver->solve(tmpVec, tmpVec);
subdomain->solve(tmpVec, tmpVec);
PetscScalar *tmpValues;
VecGetArray(tmpVec, &tmpValues);
......@@ -800,17 +817,13 @@ namespace AMDiS {
MatAssemblyBegin(matBPi, MAT_FINAL_ASSEMBLY);
MatAssemblyEnd(matBPi, MAT_FINAL_ASSEMBLY);
MatDuplicate(subDomainSolver->getMatCoarseCoarse(), MAT_COPY_VALUES, &mat_schur_primal);
MatMatMult(subDomainSolver->getMatCoarseInt(), matBPi, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &matPrimal);
MatDuplicate(subdomain->getMatCoarseCoarse(), MAT_COPY_VALUES, &mat_schur_primal);
MatMatMult(subdomain->getMatCoarseInt(), matBPi, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &matPrimal);
MatAXPY(mat_schur_primal, -1.0, matPrimal, DIFFERENT_NONZERO_PATTERN);
MatDestroy(&matPrimal);
MatDestroy(&matBPi);
MatInfo minfo;
MatGetInfo(mat_schur_primal, MAT_GLOBAL_SUM, &minfo);
MSG("Schur primal matrix nnz = %f\n", minfo.nz_used);
KSPCreate(mpiCommGlobal, &ksp_schur_primal);
KSPSetOperators(ksp_schur_primal, mat_schur_primal, mat_schur_primal,
SAME_NONZERO_PATTERN);
......@@ -822,8 +835,20 @@ namespace AMDiS {
PCFactorSetMatSolverPackage(pc_schur_primal, MATSOLVERMUMPS);
KSPSetFromOptions(ksp_schur_primal);
MSG("Creating Schur primal matrix needed %.5f seconds.\n",
MPI::Wtime() - wtime);
if (printTimings) {
MatInfo minfo;
MatGetInfo(mat_schur_primal, MAT_GLOBAL_SUM, &minfo);
MSG("Schur primal matrix nnz = %f\n", minfo.nz_used);
MSG("FETI-DP timing 06: %.5f seconds (creation of schur primal matrix)\n",
MPI::Wtime() - wtime);
wtime = MPI::Wtime();
KSPSetUp(ksp_schur_primal);
KSPSetUpOnBlocks(ksp_schur_primal);
MSG("FETI-DP timing 07: %.5f seconds (factorization of primal schur matrix).\n",
MPI::Wtime() - wtime);
}
}
}
......@@ -851,7 +876,7 @@ namespace AMDiS {
// === Create FETI-DP solver object. ===
fetiData.mat_lagrange = &mat_lagrange;
fetiData.subSolver = subDomainSolver;
fetiData.subSolver = subdomain;
fetiData.ksp_schur_primal = &ksp_schur_primal;
VecCreateMPI(mpiCommGlobal,
......@@ -942,6 +967,17 @@ namespace AMDiS {
PCSetType(precon_feti, PCSHELL);
PCShellSetContext(precon_feti, static_cast<void*>(&fetiDirichletPreconData));
PCShellSetApply(precon_feti, petscApplyFetiDirichletPrecon);
// For the case, that we want to print the timings, we force the LU
// factorization of the local problems to be done here explicitly.
if (printTimings) {
double wtime = MPI::Wtime();
KSPSetUp(ksp_interior);
KSPSetUpOnBlocks(ksp_interior);
MSG("FETI-DP timing 08: %.5f seconds (factorization of Dirichlet preconditoner matrices)\n",
MPI::Wtime() - wtime);
}
break;
......@@ -1142,13 +1178,21 @@ namespace AMDiS {
createFetiData();
// === Create matrices for the FETI-DP method. ===
subDomainSolver->fillPetscMatrix(mat);
double wtime = MPI::Wtime();
subdomain->fillPetscMatrix(mat);
if (printTimings)
MSG("FETI-DP timing 02: %.5f seconds (creation of interior matrices)\n",
MPI::Wtime() - wtime);
// === Create matrices for FETI-DP preconditioner. ===
if (fetiPreconditioner != FETI_NONE) {
wtime = MPI::Wtime();
int nRowsDual = dualDofMap.getRankDofs();
MatCreateSeqAIJ(PETSC_COMM_SELF,
......@@ -1298,8 +1342,24 @@ namespace AMDiS {
MatAssemblyBegin(mat_duals_interior, MAT_FINAL_ASSEMBLY);
MatAssemblyEnd(mat_duals_interior, MAT_FINAL_ASSEMBLY);
}
if (printTimings)
MSG("FETI-DP timing 03: %.5f seconds (creation of preconditioner matrices)\n",
MPI::Wtime() - wtime);
}
// For the case, that we want to print the timings, we force the LU
// factorization of the local problems to be done here explicitly.
if (printTimings) {
wtime = MPI::Wtime();
KSPSetUp(subdomain->getSolver());
KSPSetUpOnBlocks(subdomain->getSolver());
MSG("FETI-DP timing 04: %.5f seconds (factorization of subdomain matrices)\n",
MPI::Wtime() - wtime);
}
// === Create and fill PETSc matrix for Lagrange constraints. ===
createMatLagrange(feSpaces);
......@@ -1320,7 +1380,7 @@ namespace AMDiS {
{
FUNCNAME("PetscSolverFeti::fillPetscRhs()");
subDomainSolver->fillPetscRhs(vec);
subdomain->fillPetscRhs(vec);
}
......@@ -1364,41 +1424,56 @@ namespace AMDiS {
// === Create new rhs ===
double wtime = MPI::Wtime();
// d = L inv(K_BB) f_B - L inv(K_BB) K_BPi inv(S_PiPi) [f_Pi - K_PiB inv(K_BB) f_B]
// vec_rhs = L * inv(K_BB) * f_B
subDomainSolver->solveGlobal(subDomainSolver->getRhsInterior(), tmp_b0);
subdomain->solveGlobal(subdomain->getRhsInterior(), tmp_b0);
MatMult(mat_lagrange, tmp_b0, vec_rhs);
// tmp_primal0 = M_PiB * inv(K_BB) * f_B
MatMult(subDomainSolver->getMatCoarseInt(), tmp_b0, tmp_primal0);
MatMult(subdomain->getMatCoarseInt(), tmp_b0, tmp_primal0);
// tmp_primal0 = f_Pi - M_PiB * inv(K_BB) * f_B
VecAXPBY(tmp_primal0, 1.0, -1.0, subDomainSolver->getRhsCoarseSpace());
VecAXPBY(tmp_primal0, 1.0, -1.0, subdomain->getRhsCoarseSpace());
// tmp_primal0 = inv(S_PiPi) (f_Pi - M_PiB * inv(K_BB) * f_B)
KSPSolve(ksp_schur_primal, tmp_primal0, tmp_primal0);
//
MatMult(subDomainSolver->getMatIntCoarse(), tmp_primal0, tmp_b0);
subDomainSolver->solveGlobal(tmp_b0, tmp_b0);
MatMult(subdomain->getMatIntCoarse(), tmp_primal0, tmp_b0);
subdomain->solveGlobal(tmp_b0, tmp_b0);
MatMult(mat_lagrange, tmp_b0, tmp_lagrange0);
//
VecAXPBY(vec_rhs, -1.0, 1.0, tmp_lagrange0);
if (printTimings) {
MSG("FETI-DP timing 09: %.5f seconds (create rhs vector)\n",
MPI::Wtime() - wtime);
wtime = MPI::Wtime();
}
// === Solve with FETI-DP operator. ===
KSPSolve(ksp_feti, vec_rhs, vec_rhs);
if (printTimings) {
MSG("FETI-DP timing 10: %.5f seconds (application of FETI-DP operator)\n",
MPI::Wtime() - wtime);
wtime = MPI::Wtime();
}
// === Solve for u_primals. ===
VecCopy(subDomainSolver->getRhsCoarseSpace(), tmp_primal0);
subDomainSolver->solveGlobal(subDomainSolver->getRhsInterior(), tmp_b0);
MatMult(subDomainSolver->getMatCoarseInt(), tmp_b0, tmp_primal1);
VecCopy(subdomain->getRhsCoarseSpace(), tmp_primal0);
subdomain->solveGlobal(subdomain->getRhsInterior(), tmp_b0);
MatMult(subdomain->getMatCoarseInt(), tmp_b0, tmp_primal1);
VecAXPBY(tmp_primal0, -1.0, 1.0, tmp_primal1);
MatMultTranspose(mat_lagrange, vec_rhs, tmp_b0);
subDomainSolver->solveGlobal(tmp_b0, tmp_b0);
MatMult(subDomainSolver->getMatCoarseInt(), tmp_b0, tmp_primal1);
subdomain->solveGlobal(tmp_b0, tmp_b0);
MatMult(subdomain->getMatCoarseInt(), tmp_b0, tmp_primal1);
VecAXPBY(tmp_primal0, 1.0, 1.0, tmp_primal1);
KSPSolve(ksp_schur_primal, tmp_primal0, tmp_primal0);
......@@ -1406,18 +1481,23 @@ namespace AMDiS {
// === Solve for u_b. ===
VecCopy(subDomainSolver->getRhsInterior(), tmp_b0);
VecCopy(subdomain->getRhsInterior(), tmp_b0);
MatMultTranspose(mat_lagrange, vec_rhs, tmp_b1);
VecAXPBY(tmp_b0, -1.0, 1.0, tmp_b1);
MatMult(subDomainSolver->getMatIntCoarse(), tmp_primal0, tmp_b1);
MatMult(subdomain->getMatIntCoarse(), tmp_primal0, tmp_b1);
VecAXPBY(tmp_b0, -1.0, 1.0, tmp_b1);
subDomainSolver->solveGlobal(tmp_b0, tmp_b0);
subdomain->solveGlobal(tmp_b0, tmp_b0);
// === And recover AMDiS solution vectors. ===
recoverSolution(tmp_b0, tmp_primal0, vec);
if (printTimings) {
MSG("FETI-DP timing 11: %.5f seconds (Inner solve and solution recovery)\n",
MPI::Wtime() - wtime);
}
VecDestroy(&vec_rhs);
VecDestroy(&tmp_b0);
VecDestroy(&tmp_b1);
......@@ -1448,7 +1528,7 @@ namespace AMDiS {
destroyFetiKsp();
subDomainSolver->destroyMatrixData();
subdomain->destroyMatrixData();
}
......@@ -1456,7 +1536,7 @@ namespace AMDiS {
{
FUNCNAME("PetscSolverFeti::destroyVectorData()");
subDomainSolver->destroyVectorData();
subdomain->destroyVectorData();
}
......
AMDiS/src/parallel/PetscSolverFeti.h
View file @ 805f4b62
......@@ -258,13 +258,15 @@ namespace AMDiS {
bool multiLevelTest;
PetscSolver *subDomainSolver;
PetscSolver *subdomain;
int meshLevel;
int rStartInterior;
int nGlobalOverallInterior;
bool printTimings;
};
}
......
AMDiS/src/parallel/PetscSolverGlobalMatrix.cc
View file @ 805f4b62
......@@ -332,14 +332,16 @@ namespace AMDiS {
TEST_EXIT_DBG(interiorMap)("No parallel DOF map defined!\n");
// === Transfer values from DOF vector to the PETSc vector. ===
if (coarseSpaceMap) {
fillPetscRhsWithCoarseSpace(vec);
for (int i = 0; i < vec->getSize(); i++)
setDofVector(rhsInterior, rhsCoarseSpace, vec->getDOFVector(i), i);
} else {
// === Transfer values from DOF vector to the PETSc vector. ===
for (int i = 0; i < vec->getSize(); i++)
setDofVector(rhsInterior, vec->getDOFVector(i), i);
}
VecAssemblyBegin(rhsInterior);
VecAssemblyEnd(rhsInterior);
......@@ -360,27 +362,6 @@ namespace AMDiS {
}
void PetscSolverGlobalMatrix::fillPetscRhsWithCoarseSpace(SystemVector *vec)
{
FUNCNAME("SubDomainSolver::fillPetscRhs()");
for (int i = 0; i < vec->getSize(); i++) {
const FiniteElemSpace *feSpace = vec->getDOFVector(i)->getFeSpace();
DOFVector<double>::Iterator dofIt(vec->getDOFVector(i), USED_DOFS);
for (dofIt.reset(); !dofIt.end(); ++dofIt) {
int index = dofIt.getDOFIndex();
if (isCoarseSpace(feSpace, index)) {
index = coarseSpaceMap->getMatIndex(i, index);
VecSetValue(rhsCoarseSpace, index, *dofIt, ADD_VALUES);
} else {
index = interiorMap->getMatIndex(i, index) + rStartInterior;
VecSetValue(rhsInterior, index, *dofIt, ADD_VALUES);
}
}
}
}
void PetscSolverGlobalMatrix::solvePetscMatrix(SystemVector &vec,
AdaptInfo *adaptInfo)
{
......@@ -704,7 +685,8 @@ namespace AMDiS {
}
void PetscSolverGlobalMatrix::setDofVector(Vec& petscVec,
void PetscSolverGlobalMatrix::setDofVector(Vec vecInterior,
Vec vecCoarse,
DOFVector<double>* vec,
int nRowVec,
bool rankOnly)
......@@ -726,24 +708,38 @@ namespace AMDiS {
// Get PETSc's mat index of the row DOF.
int index = 0;
if (interiorMap->isMatIndexFromGlobal())
index = interiorMap->getMatIndex(nRowVec, globalRowDof);
index =
interiorMap->getMatIndex(nRowVec, globalRowDof) + rStartInterior;
else
index = interiorMap->getMatIndex(nRowVec, dofIt.getDOFIndex());
index =
interiorMap->getMatIndex(nRowVec, dofIt.getDOFIndex()) + rStartInterior;
if (perMap.isPeriodic(feSpace, globalRowDof)) {
std::set<int>& perAsc = perMap.getAssociations(feSpace, globalRowDof);
double value = *dofIt / (perAsc.size() + 1.0);
VecSetValue(petscVec, index, value, ADD_VALUES);
for (std::set<int>::iterator perIt = perAsc.begin();
perIt != perAsc.end(); ++perIt) {
int mappedDof = perMap.map(feSpace, *perIt, globalRowDof);
int mappedIndex = interiorMap->getMatIndex(nRowVec, mappedDof);
VecSetValue(petscVec, mappedIndex, value, ADD_VALUES);
if (coarseSpaceMap && isCoarseSpace(feSpace, dofIt.getDOFIndex())) {
ERROR_EXIT("Periodic coarse space not yet supported!\n");
} else {
std::set<int>& perAsc = perMap.getAssociations(feSpace, globalRowDof);
double value = *dofIt / (perAsc.size() + 1.0);
VecSetValue(vecInterior, index, value, ADD_VALUES);
for (std::set<int>::iterator perIt = perAsc.begin();
perIt != perAsc.end(); ++perIt) {
int mappedDof = perMap.map(feSpace, *perIt, globalRowDof);
int mappedIndex = interiorMap->getMatIndex(nRowVec, mappedDof);
VecSetValue(vecInterior, mappedIndex, value, ADD_VALUES);
}
}
} else {
} else {
// The DOF index is not periodic.
VecSetValue(petscVec, index, *dofIt, ADD_VALUES);
if (coarseSpaceMap && isCoarseSpace(feSpace, dofIt.getDOFIndex())) {
TEST_EXIT_DBG(vecCoarse != PETSC_NULL)("Should not happen!\n");
index = coarseSpaceMap->getMatIndex(nRowVec, dofIt.getDOFIndex());
VecSetValue(vecCoarse, index, *dofIt, ADD_VALUES);
} else {
VecSetValue(vecInterior, index, *dofIt, ADD_VALUES);
}
}
}
}
......
AMDiS/src/parallel/PetscSolverGlobalMatrix.h
View file @ 805f4b62
......@@ -54,8 +54,6 @@ namespace AMDiS {
void fillPetscRhs(SystemVector *vec);
void fillPetscRhsWithCoarseSpace(SystemVector *vec);
void solvePetscMatrix(SystemVector &vec, AdaptInfo *adaptInfo);
void solveGlobal(Vec &rhs, Vec &sol);
......@@ -72,9 +70,19 @@ namespace AMDiS {
void setDofMatrix(DOFMatrix* mat, int nRowMat = 0, int nColMat = 0);
/// Takes a DOF vector and sends its values to a given PETSc vector.
void setDofVector(Vec& petscVec, DOFVector<double>* vec,
void setDofVector(Vec vecInterior,
Vec vecCoarse,
DOFVector<double>* vec,
int nRowVec, bool rankOnly = false);
inline void setDofVector(Vec vecInterior,
DOFVector<double>* vec,
int nRowVec, bool rankOnly = false)
{
setDofVector(vecInterior, PETSC_NULL, vec, nRowVec, rankOnly);
}
protected:
/// Arrays definig the non zero pattern of Petsc's matrix.
int *d_nnz, *o_nnz;
......
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