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openmpi on windows server with two additional virtual machines |
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August 10, 2021, 05:46 |
openmpi on windows server with two additional virtual machines
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Join Date: Dec 2019
Location: Cologne, Germany
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hi all,
i have a windows server with two additional virtual machines on it. i am using the server with two other co-workers. when i start a simulation with the virtual machines, the used cores are not fixed, they change the whole time, i attached two screenshots for two different times. the problem is, when i use nearly all cores, because the simulations do not use the same cores, it slows down the computation time. i think thats because when the cores are switched, the simulation waits until it can use the core, which will be free when calculation is done there. i already used mpirun options like --bind-to core or --bind-to socket and -cpu-set but no success so far. i hope anybody can help in this regard. |
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mpirun, openmpi, parallel |
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