Tech Articles

DMP with SOL 108


Tech Articles ID    KB8022079
Status:    Published
Published date:    04/23/2015
Updated:    06/29/2015
Reported In:   MSC Nastran - MSC Nastran - Standard (SOL 1 through 200)
 

Abstract (Question)

Summary

  • Distributed Memory Parallel ( DMP ) is using multiple processors either on the same computer or on multiple computers.
  • DMP works with SMP.
  • SOL 108 scales almost linearly with DMP because the solutions for each frequency are indepenent.
  • Using multiple hosts with SOL 108 may reduce times by an additional 10%

Description (Answer)

Details

Below is a chart for various models with varying number of DMP processors.

In general, the work done in Parallel for SOL 108 is the decomposition.

Job N dof N 2-D elements N 3-D elementes N Frequencies
vl0fdf1 135,702 0 9,192 32
xl0tdf1 529,257 86,301 2,135 32

Commands

DMP parallel is activated with dmp=n on the command line. Where "n" is the number of CPUs

Caveat

  • Queing systems like PBS/LSF/SunGridengine will need to pass host names to Nastran for multihost runs.

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