RADIOSS IMPLICIT MULTI-CORE RUN

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hi All,

I have a concern about multi-core run for Radioss implicit ver11 . I have two CPUs (2 x Intel xeon 2.4 Ghz, 6 cores).I used to run with -nproc 2 option. When I try for example -nproc 6 option ,I expected decreasing calculation time about two times less, but there is no difference between -nproc 2 and -nproc 6 option. And I tried -nthread 10 option ,but there is no changing also.

How can I use my multi -core capability ? Thanks

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2012

    Hi All,

    I have a concern about multi-core run for Radioss implicit ver11 . I have two CPUs (2 x Intel xeon 2.4 Ghz, 6 cores).I used to run with -nproc 2 option. When I try for example -nproc 6 option ,I expected decreasing calculation time about two times less, but there is no difference between -nproc 2 and -nproc 6 option. And I tried -nthread 10 option ,but there is no changing also.

    How can I use my multi -core capability ? Thanks

    nproc command is a bit old command now, you should use -nt option with the v11 solvers.

    if you use -nt n option (n is the core number) then your analysis runs in 2 cpu (core) smp (shared memory) mode.

    if you increase this although you have 2 cpu, then it could be a bit slow.

    you should check the .out file of your model, it is clearly written in there.

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