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Commit 99546308 authored by Thomas Ponweiser's avatar Thomas Ponweiser
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Halo exchange sample (unstructured grids): updated README.md

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...@@ -165,9 +165,9 @@ the command line output should look similar to ...@@ -165,9 +165,9 @@ the command line output should look similar to
Validation successful. Validation successful.
# Known issues ## Known issues
## OpenMPI issue #1304 ### OpenMPI issue #1304
There is a [known issue for OpenMPI](https://github.com/open-mpi/ompi/issues/1304) when a MPI Datatype is marked for deallocation (with `MPI_Type_free`) while still in use by non-blocking collective operations. If you are using OpenMPI and get a segmentation fault in MPI_Bcast, try to re-compile with: There is a [known issue for OpenMPI](https://github.com/open-mpi/ompi/issues/1304) when a MPI Datatype is marked for deallocation (with `MPI_Type_free`) while still in use by non-blocking collective operations. If you are using OpenMPI and get a segmentation fault in MPI_Bcast, try to re-compile with:
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