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[ANSYS EXPLORER]

Dear Experts,

 

I am running a subject FE model having 5 million nodes (1 million elements) and facing memory shortage issues as per below error. I optimized mesh and cannot go below to 1 million elements due to result accuracy. 

 

*** ERROR *** CP =     671.688   TIME= 23:25:31
 An input/output error has occurred on the process with MPI Rank ID = 0. This error occurs when trying to open a file with length = 110 GB.     Please check to make sure there is enough free disk space in the working directory. 

 

 

 

My Machine Configuration as below:

 

 

RAM 128 GB + 4 cores (I have also tried with and without "distributed" option also).

 

Available virtual memory - 130 GB

Paging file - 19GB.

Work Space memory - 1 GB

Data Space memory - 2GB

 

Solver handler - My Computer with 4 cores ( i did not select for My Computer background as i have only one ANSYS Licence)

 

I have tried with direct / Iteration solver method having 100 sub steps. But No sucess. Is Iteration solver will consume less memory size ?. please advise.

 

 

Please give light on how to fix this error. Also give some clarity on requied RAM size , Work space / Data Space memory size, Paging file size and virtual memory size for solving these size of FE model in general  as i am not much familiar to this settings / details.

 

Thank you in advance.

 

 

Regards

 

 

AE.

 

 

 

[Aniket]

 

Check your C: drive where the temp directory of Ansys is located, and see if it has enough space. You can also change the location to D: drive if you prefer and if it has a SSD (preferably, not mandatory), and more free space as compared to C: drive. /forum/forums/topic/change-the-location-of-disk-where-temporary-files-are-written

For other things please check:

https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v231/en/ans_per/per_memoryusage.html

Video presentation of knowledge materials on Solvers and Memory Requirements – Ansys Knowledge

-Aniket

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