 jpekkila
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46cfa9cd37
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Now using MPI C bindings instead of the (deprecated?) C++ bindings due to compilation issues on some machines (error: cast between incompatible function types, ompi_mpi_cxx_op_intercept)
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2020-08-19 15:50:16 +03:00 |
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jpekkila
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0d1c5b3911
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Autoformatted
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2020-06-24 15:56:30 +03:00 |
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jpekkila
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f04e347c45
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Cleanup before merging to the master merge candidate branch
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2020-06-24 15:13:15 +03:00 |
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jpekkila
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176ceae313
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Fixed various compilation warnings
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2020-05-30 20:23:53 +03:00 |
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jpekkila
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9cd5909f5a
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BWtest calculates now aggregate bandwidths per process instead of assuming that all neighbor communication can be done in parallel (Within a node one can have parallel P2P connections to all neighbors and we have an insane total bandwidth, but this is not the case with network, we seem to have only one bidirectional socket)
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2020-04-09 20:28:04 +03:00 |
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jpekkila
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d4a84fb887
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Added a PCIe bandwidth test
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2020-04-09 20:04:54 +03:00 |
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jpekkila
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fb41741d74
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Improvements to samples
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2020-04-07 17:58:47 +03:00 |
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jpekkila
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cc9d3f1b9c
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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.
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2020-04-05 20:15:32 +03:00 |
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jpekkila
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88e53dfa21
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Added a little program for testing the bandwidths of different MPI comm styles on n nodes and processes
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2020-04-05 17:09:57 +03:00 |
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