 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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Johannes Pekkila
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9b6d927cf1
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It might be better to benchmark MPI codes without synchronization because of overhead of timing individual steps
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2020-03-31 12:37:54 +02:00 |
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jpekkila
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850b37e8c8
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Added a switch for generating strong and weak scaling results
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2020-03-30 17:56:12 +03:00 |
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jpekkila
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d4eb3e0d35
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Benchmarks are now written into a csv-file
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2020-03-30 17:41:42 +03:00 |
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jpekkila
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af531c1f96
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Added a sample for benchmarking
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2020-03-30 17:22:41 +03:00 |
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jpekkila
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5a898b8e95
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mpitest now gives a warning instead of a compilation failure if MPI is not enabled
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2020-03-26 15:31:29 +02:00 |
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jpekkila
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329a71d299
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Added an example how to run the code with MPI
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2020-03-26 15:02:55 +02:00 |
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jpekkila
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67f2fcc88d
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Setting inv_dsx etc explicitly is no longer required as they are set to default values in acc/stdlib/stdderiv.h
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2020-01-28 18:22:27 +02:00 |
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jpekkila
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0ccd4e3dbc
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Major improvement: uniforms can now be set to default values. The syntax is the same as for setting any other values, f.ex. 'uniform Scalar a = 1; uniform Scalar b = 0.5 * a;'. Undefined uniforms are still allowed, but in this case the user should load a proper value into it during runtime. Default uniform values can be overwritten by calling any of the uniform loader funcions (like acDeviceLoadScalarUniform). Improved also error checking. Now there are explicit warnings if the user tries to load an invalid value into a device constant.
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2020-01-28 18:17:31 +02:00 |
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jpekkila
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fdd829b888
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Cleaned up samples and removed old unused stuff. Simplified CMake files.
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2020-01-23 20:00:19 +02:00 |
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jpekkila
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f77ab8a809
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Removed unnecessary README and incorrect building instructions for mpitest
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2020-01-16 14:49:07 +02:00 |
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jpekkila
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65d9274eaa
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Updated samples to have consistent naming
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2020-01-15 16:56:02 +02:00 |
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jpekkila
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efa95147f3
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Renamed exampleproject -> cpptest
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2020-01-15 16:25:27 +02:00 |
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jpekkila
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23efcb413f
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Introduced a sample directory and moved all non-library-components from src to there
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2020-01-15 16:24:38 +02:00 |
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