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How to run ".def" model with parallel CPUs

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Old   January 4, 2011, 04:12
Smile How to run ".def" model with parallel CPUs
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mohammad
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Hi every body.
I have created a model with CFX and want to run it with 4 processors.
when I try with "serial" option, it works but according to my model it takes a long time to be solved.
When I try using "MPICH2 local paralle" it fails always. The error is:

!-----------------------------------------------------------------------
!
! Error #001100279 has occurred in subroutine ErrAction.
! Message:
! Incompatible sparsity patterns.
!
!-----------------------------------------------------------------------

Does anybody know why? Is there any brave-heart to help me?
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Old   January 5, 2011, 17:51
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Ali Torbaty
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Are you able to run CFX examples in parallel?

If yes, do you receive this error during partitioning?
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Old   January 6, 2011, 00:05
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Hi Ali,
I tried to solve some other CFD files in parallel and I was successful.
Plus,for your second question, when I run the file it works for some few iteration( usually less than 10 iterations) , and I don't have any problem during the partitioning stage.
So do you have any idea about that?

TNX
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Old   January 6, 2011, 20:12
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Then "Incompatible sparsity patterns" makes me thinking somethig went wrong in solver side, did you try to alter the mesh either finer or courser which might change the sparsity patern?
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Old   January 7, 2011, 04:05
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Hi dear Ali,
Actually, I changed my software again to Ansys 11 not 12. Now I'm trying to solve that problem...
You know,I'm trying to solve a wind tunnel and even for the same model, when i change wind velocity iwill have different errors..
I think that's normal because I must change my mesh arrangement, specially near the blade.
By the way! do you have any experience about wind turbine in CFD?
If yes, I want to talk with you about the proper turbulent model and mesh arrangement.

Regards,
Mohammad
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Old   January 10, 2011, 18:00
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Ali Torbaty
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unfortunately wind turbines are not my field, I did model some wind farms but that didn't include the turbine's details. you might look around and find some close example helping you on that.
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