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check if mpi is initialized

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This commit is contained in:
Joachim Schöberl 2020-09-15 23:15:50 +02:00
parent 2763285b46
commit 8b5675a8e2
1 changed files with 11 additions and 0 deletions
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11
libsrc/core/mpi_wrapper.hpp
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@ -67,6 +67,17 @@ namespace ngcore
NgMPI_Comm (MPI_Comm _comm, bool owns = false)
: comm(_comm), valid_comm(true)
{
int flag;
MPI_Initialized (&flag);
if (!flag)
{
valid_comm = false;
refcount = nullptr;
rank = 0;
size = 1;
return;
}
if (!owns)
refcount = nullptr;
else