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[Fady Elshazly]

Hello, 

 

I am trying to construct a model with about 3*10^6 element in lsprepost. When I try to copy or do any kind of element editing, the software crashes. Is there any way to solve this?

 

Thanks 

[Nanda Veralla]

Hello Fady,

Crashing generally happens when solver doesn’t have required amount of memory it needs. A general approximate is around 10 GB of RAM per million DOF’s. For more information on LS-PREPOST memory requirements, this below link might be of help:

Implicit: Memory notes — Welcome to the LS-DYNA support site

Regards,

Nanda.

If you are not able to open the links, refer to this forum discussion: How to access the ANSYS Online Help

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[Tonmoy]

Hi Nanda,

I think we're messing up the LS-PrePost with LS-Dyna. The memory requirement you're directing to is for LS-Dyna - the solver, not for LS-PrePost - the pre/post processing software, which was crushing during handling the modeling task.

[Nanda Veralla]

Hello Tonmoy,

My apologies for the confusion. Let me forward this to respective team. I'm not familiar with LS-PrePost.

Best,

Nanda

[Tonmoy]

No problem. We are interacting on forum. So, sometimes it becomes hard to appreciate things clearly. We really want to thank you for your time and help to guide us here.

[Nanda Veralla]

Hello Fady and Tonmoy,

I reached out to one colleague, who's more familiar with LSPP. We need more information to debug:

1. I read your other discussion, you're using LSPP 4.9 right? Is this on Windows or Linux?
2. On Linux, you get a message in the terminal after LSPP crashes, but not on windows. Perhaps that can give us more details on why is it crashing?
3. As provided in my initial response, most of the crashing happens because of lack of memory. You've mentioned about 1TB RAM, is this the amount of free available memory or total memory?
4. Perhaps deleting the configuration file might help. On windows it is under %AppData%\Roaming\LSTC\LS-PrePost4.10\lsppconf. Launching LSPP again will regenerate new file.

Can you please raise a support case from our customer portal, if this doesn't help. For further debug, we might need to reproduce the issue and see what's causing this behaviour.

Best,

Nanda

[Fady Elshazly]

Hello Nanda, 

 

1- The operating system is Linux

2- Please find the attached message from the terminal after crashing. I was trying to recopy a part with taking into consideration that I copied it before this step. 

 

 

[Tonmoy]

Also, I want to add

3. The following snippet will clearify things about the memory -

We are using the academic version of the software. Therefore I don't know if we are actually in position to raise a support case or have access in the ANSYS customer portal.