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Parallel computing in MSC NASTRAN

Parallel computing in MSC NASTRAN

Parallel computing in MSC NASTRAN

(OP)
Hi i'd like to know if NASTRAN is able to use all the CPUs when solving a Sol 106, and in case it can, does NASTRAN do the parallel computing automatically or do i have to write something in the the .bdf file? I couldn't find any clear information on the internet and msc's guide on nastan.
Thanks for your help

RE: Parallel computing in MSC NASTRAN

SOL 106? If possible, I would use SOL 400 for Nonlinear static analysis since it is way faster, simpler, and more reliable.

To understand Parallel processing, try viewing WM85 at this link, http://simcompanion.mscsoftware.com/infocenter/index?page=content&id=WM120


You can also send an email to mscnastran.support@mscsoftware.com and I am sure you will get a straight answer from them.

Lastly, there is a chart with all the supported SOLs for SMP and DMP. I will try lurking through all the documentation to find that chart.

RE: Parallel computing in MSC NASTRAN

To add to my previous post, a table of supported SOLs for "Domain Decomposition Solution Method" is given at the following link. Refer to Table 4-2,

http://books.google.com/books?id=lTUrKh_iTSEC&lpg=PT204&ots=3F9Rcf3aFT&dq=Analysis%20Types%20and%20Partitioning%20Methods%20SolutionSequenceDMP%20Method%20Partitioning%20Methods%20Available&pg=PT206#v=onepage&q&f=false

I am not 100% sure if SOL 106 is supported by parallel computing.

RE: Parallel computing in MSC NASTRAN

I use NX Nastran, which is almost the same thing as MSC but not exactly.

For parallel processing I use the command "PARALLEL". This can be inserted in one of several places. You can put it in the analysis deck (which I think is your bdf file) as one of the first few lines in the file, in which case it would be written like this:
NASTRAN PARALLEL = N
where N = number of processors. I have it in my configuration file, which I think is called "conf.rcf". In that file, it is written as "PARALLEL=2".

There is another thread on this topic here: http://www.eng-tips.com/viewthread.cfm?qid=204419

I'm not aware of any limitations on, or problems with, parallel processing in Nastran. Nevertheless, I recommend referring to the Nastran documentation to make sure and to get more information. I refer to it all the time, especially when trying out a feature I haven't used before, and occasionally stumble across some helpful tidbit that I never knew before, or pitfall I didn't know about.

Lastly, you can open Windows Task Manager to make sure all the processors are actually being used.

RE: Parallel computing in MSC NASTRAN

(OP)
thanks a lot for your response. unfortunately the job runs on the cluster of my company and i can't see the task manager. i'll try the parallel command though
tnz a lot

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