Memory allocation issue in ansys cfx

Rakeshchandra · August 20, 2022, 08:40

Hello, I came across while solving for a transient case under parallel processing in CFX and its resulting in a memory allocation error. I've referred and tried links and suggestions came across this forum and Youtube to overcome it but I was unsuccessful. Also, can anyone explain what is term WORDS in mentioned for memory spaces.

My PC Specs:
Processor: Intel(R) Core(TM) i7-10700
RAM: 48GB
storage available: 150GB

Gert-Jan · August 22, 2022, 06:23

Does the error occur during interpolation, partiioning or solving?

ghorrocks · August 22, 2022, 19:47

It looks like it occurs during the partitioner. In that case, simply increase the real stack size for the partitioner as it says - this can be done in solver manager under advanced options, and set it to maybe 1.2 (or if you have lots of spare memory 2.0).

Rakeshchandra · August 24, 2022, 10:13

During Partitioning (i guess), i.e after allocation of processors and starting the solver.

Rakeshchandra · August 24, 2022, 10:14

Thank you for replying, I've tried this after reading in many forums but the problem isn't solved.

Opaque · August 24, 2022, 12:05

Quote:

Originally Posted by Rakeshchandra

Thank you for replying, I've tried this after reading in many forums but the problem isn't solved.

Please post the error message after you increased the memory, and you can also post the memory allocation section under EXECUTION CONTROL.

Something seems off.

August 22, 2022, 19:47		#3
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	It looks like it occurs during the partitioner. In that case, simply increase the real stack size for the partitioner as it says - this can be done in solver manager under advanced options, and set it to maybe 1.2 (or if you have lots of spare memory 2.0). Opaque likes this. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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August 22, 2022, 06:23		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,928 Rep Power: 28	Does the error occur during interpolation, partiioning or solving?

August 24, 2022, 10:13		#4
Rakeshchandra New Member Rakeshchandra Join Date: Jul 2020 Posts: 13 Rep Power: 6	During Partitioning (i guess), i.e after allocation of processors and starting the solver.

August 24, 2022, 10:14		#5
Rakeshchandra New Member Rakeshchandra Join Date: Jul 2020 Posts: 13 Rep Power: 6	Thank you for replying, I've tried this after reading in many forums but the problem isn't solved.