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This commit is contained in:
Alain Miniussi
2014-10-10 16:38:44 +02:00
parent b4c8c3541f
commit 911209c554
4 changed files with 48 additions and 12 deletions
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22
src/cartesian_communicator.cpp
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@@ -41,7 +41,7 @@ operator<<(std::ostream& out, cartesian_topology const& topo) {
cartesian_communicator::cartesian_communicator(const communicator& comm,
const cartesian_topology& topology,
bool reorder )
: communicator()
: communicator(MPI_COMM_NULL, comm_attach)
{
std::vector<int> dims(topology.size());
std::vector<int> periodic(topology.size());
@@ -66,7 +66,7 @@ cartesian_communicator::cartesian_communicator(const communicator& comm,
cartesian_communicator::cartesian_communicator(const cartesian_communicator& comm,
const std::vector<int>& keep )
: communicator()
: communicator(MPI_COMM_NULL, comm_attach)
{
int const max_dims = comm.ndims();
int const nbkept = keep.size();
@@ -142,6 +142,13 @@ cartesian_communicator::topology( cartesian_topology& topo,
topo.swap(res);
}
cartesian_topology
cartesian_communicator::topology() const {
cartesian_topology topo(ndims());
std::vector<int> coords;
topology(topo, coords);
return topo;
}
void
cartesian_topology::split(std::vector<int>& dims, std::vector<bool>& periodics) const {
int ndims = size();
@@ -156,8 +163,17 @@ cartesian_topology::split(std::vector<int>& dims, std::vector<bool>& periodics)
std::vector<int>&
cartesian_dimensions(int sz, std::vector<int>& dims) {
int min = 1;
int const dimsz = dims.size();
for(int i = 0; i < dimsz; ++i) {
if (dims[i] > 0) {
min *= dims[i];
}
}
int leftover = sz % min;
BOOST_MPI_CHECK_RESULT(MPI_Dims_create,
(sz, dims.size(), dims.data()));
(sz-leftover, dims.size(), dims.data()));
return dims;
}