astaroth/mpitest at 53b48bb8ce3a5cf3e3d2ccd95bf7ef07f17db7d9 - astaroth - Carl's Gitea

cwpearson/astaroth

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History

Oskar Lappi 9e5fd40838 Changes after code review by Johannes, and clang-format

2020-06-04 18:50:22 +03:00

..

CMakeLists.txt

Cleaned up samples and removed old unused stuff. Simplified CMake files.

2020-01-23 20:00:19 +02:00

main_old.cc

Found a workaround that gives good inter and intra-node performance. HPC-X MPI implementation does not know how to do p2p comm with pinned arrays (should be 80 GiB/s, measured 10 GiB/s) and internode comm is super slow without pinned arrays (should be 40 GiB/s, measured < 1 GiB/s). Made a proof of concept communicator that pins arrays that are send or received from another node.

2020-04-05 20:15:32 +03:00

main.cc

Changes after code review by Johannes, and clang-format

2020-06-04 18:50:22 +03:00

README.txt

Removed unnecessary README and incorrect building instructions for mpitest

2020-01-16 14:49:07 +02:00

README.txt

This directory is used to test MPI with Astaroth.

Building:
cmake -DBUILD_SAMPLES=ON -DMPI_ENABLED=ON -DCMAKE_CXX_COMPILER=$(which mpicxx) .. && make -j

Running:
mpirun -np <nprocs> ./mpitest
or
srun <options> ./mpitest # With slurm
or
a batch script of your choice