Changes between Version 20 and Version 21 of Public/ParaStationMPI


Ignore:
Timestamp:
May 7, 2020, 10:15:08 AM (4 years ago)
Author:
Carsten Clauß
Comment:

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  • Public/ParaStationMPI

    v20 v21  
    7070- PSP_MSA_AWARE_COLLOPS=0|1|2
    7171   0: Disable MSA awareness for collective MPI operations
    72    1: Enable MSA awareness for collective MPI operations (default if `PSP_MSA_AWARENESS=1` is set)
    73    2: Apply MSA awareness recursively in multi-level topologies
    74 }}}
    75 In the recursive application of MSA awareness (`PSP_MSA_AWARE_COLLOPS=2`), a distinction is first made between inter- and intra-module communication and then, in a second step, likewise between inter- and intra-node communication within the modules.
     72   1: Enable MSA awareness for collective MPI operations (default if PSP_MSA_AWARENESS=1 is set)
     73   2: Apply MSA awareness recursively in multi-level topologies (set PSP_SMP_AWARENESS=1 in addition)
     74}}}
     75In the recursive application of MSA awareness (`PSP_MSA_AWARE_COLLOPS=2`), a distinction is first made between inter- and intra-**module** communication and then, in a second step, likewise between inter- and intra-**node** communication within the modules if `PSP_SMP_AWARENESS=1` is set in addition.
    7676
    7777**Attention:** Please note that a meaningful usage of `PSP_MSA_AWARE_COLLOPS=2` requires `psmpi-5.4.5` or higher.