void ReorderFilter<MatrixType>::permuteReorderedToOriginalTempl(const Tpetra::MultiVector<DomainScalar,LocalOrdinal,GlobalOrdinal,Node> &reorderedX,
Tpetra::MultiVector<RangeScalar,LocalOrdinal,GlobalOrdinal,Node> &originalY) const
{
TEUCHOS_TEST_FOR_EXCEPTION(reorderedX.getNumVectors() != originalY.getNumVectors(), std::runtime_error,
"Ifpack2::ReorderFilter::permuteReorderedToOriginal ERROR: X.getNumVectors() != Y.getNumVectors().");
Teuchos::ArrayRCP<Teuchos::ArrayRCP<const DomainScalar> > x_ptr = reorderedX.get2dView();
Teuchos::ArrayRCP<Teuchos::ArrayRCP<RangeScalar> > y_ptr = originalY.get2dViewNonConst();
for(size_t k=0; k < reorderedX.getNumVectors(); k++)
for(LocalOrdinal i=0; (size_t)i< reorderedX.getLocalLength(); i++)
y_ptr[k][reverseperm_[i]] = (RangeScalar)x_ptr[k][i];
}
void ReorderFilter<MatrixType>::permuteOriginalToReorderedTempl(const Tpetra::MultiVector<DomainScalar,local_ordinal_type,global_ordinal_type,node_type> &originalX,
Tpetra::MultiVector<RangeScalar,local_ordinal_type,global_ordinal_type,node_type> &reorderedY) const
{
TEUCHOS_TEST_FOR_EXCEPTION(originalX.getNumVectors() != reorderedY.getNumVectors(), std::runtime_error,
"Ifpack2::ReorderFilter::permuteOriginalToReordered ERROR: X.getNumVectors() != Y.getNumVectors().");
Teuchos::ArrayRCP<Teuchos::ArrayRCP<const DomainScalar> > x_ptr = originalX.get2dView();
Teuchos::ArrayRCP<Teuchos::ArrayRCP<RangeScalar> > y_ptr = reorderedY.get2dViewNonConst();
for(size_t k=0; k < originalX.getNumVectors(); k++)
for(local_ordinal_type i=0; (size_t)i< originalX.getLocalLength(); i++)
y_ptr[k][perm_[i]] = (RangeScalar)x_ptr[k][i];
}
void SparseContainer<MatrixType,InverseType>::
applyImpl (const Tpetra::MultiVector<InverseScalar,InverseLocalOrdinal,InverseGlobalOrdinal,InverseNode>& X,
Tpetra::MultiVector<InverseScalar,InverseLocalOrdinal,InverseGlobalOrdinal,InverseNode>& Y,
Teuchos::ETransp mode,
InverseScalar alpha,
InverseScalar beta) const
{
TEUCHOS_TEST_FOR_EXCEPTION(
Inverse_->getDomainMap ()->getNodeNumElements () != X.getLocalLength (),
std::logic_error, "Ifpack2::SparseContainer::apply: Inverse_ "
"operator and X have incompatible dimensions (" <<
Inverse_->getDomainMap ()->getNodeNumElements () << " resp. "
<< X.getLocalLength () << "). Please report this bug to "
"the Ifpack2 developers.");
TEUCHOS_TEST_FOR_EXCEPTION(
Inverse_->getRangeMap ()->getNodeNumElements () != Y.getLocalLength (),
std::logic_error, "Ifpack2::SparseContainer::apply: Inverse_ "
"operator and Y have incompatible dimensions (" <<
Inverse_->getRangeMap ()->getNodeNumElements () << " resp. "
<< Y.getLocalLength () << "). Please report this bug to "
"the Ifpack2 developers.");
Inverse_->apply (X, Y, mode, alpha, beta);
}
size_t findUniqueGids(
Tpetra::MultiVector<gno_t, lno_t, gno_t> &keys,
Tpetra::Vector<gno_t, lno_t, gno_t> &gids
)
{
// Input: Tpetra MultiVector of keys; key length = numVectors()
// May contain duplicate keys within a processor.
// May contain duplicate keys across processors.
// Input: Empty Tpetra Vector with same map for holding the results
// Output: Filled gids vector, containing unique global numbers for
// each unique key. Global numbers are in range [0,#UniqueKeys).
size_t num_keys = keys.getLocalLength();
size_t num_entries = keys.getNumVectors();
#ifdef HAVE_ZOLTAN2_MPI
MPI_Comm mpicomm = Teuchos::getRawMpiComm(*(keys.getMap()->getComm()));
#else
// Zoltan's siMPI will be used here
{
int flag;
MPI_Initialized(&flag);
if (!flag) {
int narg = 0;
char **argv = NULL;
MPI_Init(&narg, &argv);
}
}
MPI_Comm mpicomm = MPI_COMM_WORLD; // Will get MPI_COMM_WORLD from siMPI
#endif
int num_gid = sizeof(gno_t)/sizeof(ZOLTAN_ID_TYPE) * num_entries;
int num_user = sizeof(gno_t);
// Buffer the keys for Zoltan_DD
Teuchos::ArrayRCP<const gno_t> *tmpKeyVecs =
new Teuchos::ArrayRCP<const gno_t>[num_entries];
for (size_t v = 0; v < num_entries; v++) tmpKeyVecs[v] = keys.getData(v);
ZOLTAN_ID_PTR ddkeys = new ZOLTAN_ID_TYPE[num_gid * num_keys];
size_t idx = 0;
for (size_t i = 0; i < num_keys; i++) {
for (size_t v = 0; v < num_entries; v++) {
ZOLTAN_ID_PTR ddkey = &(ddkeys[idx]);
TPL_Traits<ZOLTAN_ID_PTR,gno_t>::ASSIGN(ddkey, tmpKeyVecs[v][i]);
idx += TPL_Traits<ZOLTAN_ID_PTR,gno_t>::NUM_ID;
}
}
delete [] tmpKeyVecs;
// Allocate memory for the result
char *ddnewgids = new char[num_user * num_keys];
// Compute the new GIDs
size_t nUnique = findUniqueGidsCommon<gno_t>(num_keys, num_gid,
ddkeys, ddnewgids, mpicomm);
// Copy the result into the output vector
gno_t *result = (gno_t *)ddnewgids;
for (size_t i = 0; i < num_keys; i++)
gids.replaceLocalValue(i, result[i]);
// Clean up
delete [] ddkeys;
delete [] ddnewgids;
return nUnique;
}