Ansys Learning Forum Forums Discuss Simulation LS Dyna Prepost repeated crashing: any advice? Reply To: Prepost repeated crashing: any advice?

Reno Genest
Ansys Employee

Hello Philippe,

I contacted  one of the LS-PrePost developers with your questions and here are his answers:

"

· any possibility to extract contents of a corrupted proj file ?

             LSPP doesn’t expose any functionality to our customers to handle corrupted .proj file, and therefore our customers can do nothing for the corrupt .proj file. Ideally, they should send the corrupt .proj file to us, and then we are able to debug what is going on.

· any possibility to keep intermediate .proj files? (the software should check that the file is not corrupted before deleting by the way)

              LSPP doesn’t have ability to check whether the saved .proj file is corrupted or not,  unless it is read into LSPP.

· any possibility to generate crash dumps that could then be used by developpers for debug (difficult to post a bug for something that does not happen on a freshly opened file)

               The crash dumps might be deceptive, as the real cause of crash might result from the memory corruption. Ideally, we need to get the “model + .cfile” from our customers to debug this problem.

· when it becomes unresponsive (e.g. on element delete), what happens internally? If updating the nodes/elements database, any function to check its consistency (to prevent crashing) ? How long to wait to see if it can recover (lets say for a model <50k elements on a modern PC)?

            When it comes to a model with just <50k elements, LSPP should be able to handle the element deletion without any wait. When LSPP becomes unresponsible, it probably goes into a dead loop or something else, it is hard to say how long one will wait for.

"

 

So, it would be best  if you could create a support  case and send us your model.

 

Let me know if this helps or not.

 

Reno.