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: 17,579 Rep Power: 141	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.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
General recommendations for CFD hardware [WIP]	flotus1	Hardware	17	October 25, 2023 04:49
ANSYS CFX 14 on UBUNTU 12.04 64bit: PARALLEL ISSUE	david.pasquale	CFX	6	August 9, 2018 16:05
Workbench 16.0 - Memory Allocation Factor	196235	CFX	3	August 11, 2016 03:05
error about fsi in CFX and ANSYS	WANGFIRE	CFX	1	April 21, 2015 02:48
CFX Solver Memory Error	mike	CFX	1	March 19, 2008 08:22

August 22, 2022, 06:23		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,794 Rep Power: 26	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: 5	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: 5	Thank you for replying, I've tried this after reading in many forums but the problem isn't solved.