LS Dyna

LS Dyna

Error when reading results from a HPC simulation

    • Ben_Ben
      Subscriber

      Hi, 

      I am getting an error when I load my results from a HPC. 

      I get a Normal Termination from my simulation.

      But when I take the d3plot file and read the results in Workbench LS-Dyna. I get an error.

      Can anyone provide any advice?

      I am using Workbench 2022R2. 

      Thanks, 

      Ben

    • Ben_Ben
      Subscriber

      My question is also what is the correct result file after running LS-Dyna on an HPC in batch mode. 

      I currently am using the d3plot file but it gives the error above. 

      Cheers, 

      Ben

    • Reno Genest
      Ansys Employee

      Hello Ben,

      Do you transfer the d3plot result files from your HPC cluster to a local machine before you try to read the results in Workbench LS-DYNA? If so, do you transfer all the d3plot files (d3plot, d3plot01, d3plot02, etc.)? You have to transfer the entire sequence of d3plot files and read the d3plot file (not d3plot01, or d3plot02, etc.) in Worbench.

      The results file you want are d3plot. If you cannot read it in Workbench, the workaround is the use LS-PrePost for post-processing. LS-PrePost is free to use and you can download the latest version here:

      https://ftp.lstc.com/anonymous/outgoing/lsprepost/4.9/

      Let me know how it goes.

       

      Reno.

    • Ben_Ben
      Subscriber

      Hi Reno, 

      I was only getting the d3plot file I will get the others now. Do I need to save all the d3plot files in a specific folder? 

      Ben

    • Reno Genest
      Ansys Employee

      Hello Ben,

      You can put all the d3plot files in the same folder. I don't think it matters where it is located on your machine; you should be able to read them in Workbench.

       

      Let me know how it goes.

       

      Reno.

    • Reno Genest
      Ansys Employee

      Hello Ben,

      Another option is to run on the HPC cluster from your local machine using the remote solve manager (RSM) for WB LS-DYNA. Here is some information:

      https://forum.ansys.com/forums/topic/remote-solve-manager-for-workbench/

      https://forum.ansys.com/forums/topic/can-remote-solve-manager-choose-the-results-which-export-to-local-from-cluster/

      This workflow will get the results from the HPC cluster automatically. I don't know much about the RSM. If you want to investigate this method and you have questions, please create a new post here:

      https://forum.ansys.com/forums/forum/discuss-simulation/platform/

      Name your post "Remote solve manager (RSM) for Workbench LS-DYNA".

       

      Let me know how it goes.

       

      Reno.

       

    • Ben_Ben
      Subscriber

      Hey Reno, 

      It all worked as expected. Thanks for your guidance. 

      Ben

    • Ben_Ben
      Subscriber

      Hi Reno, 

      What file do I use to get the solver output, energy summary etc. 

      At the moment they are empty:

      Cheers, 

      Ben

       

    • Reno Genest
      Ansys Employee

      Hello Ben,

      It is good that it worked.

      You can copy all the files from the HPC cluster into the solver files directory. To open the solver files directory, in Mechanical, right click on the Solution branch and click on "Open Solver Files Directory":

       

      Put all the files (d3plot, messag, glstat, etc.) in the solver files directory and then read the d3plot from the solver files directory. You should have access to the energy summary this way, but not to the solver output. You can read the messag file (solver output in SMP) with a text editor. If you ran MPP on the HCP cluster, the solver output will be all the mesXXXX files; you will have a mesXXXX files for each core you ran. For example, if you ran MPP with 16 cores, you will have 16 mesXXXX files (mes0000 - mes0015). Note that an error message could be located on only one of the mesXXXX file. You can read the mesXXXX files with a text editor (Notepad, etc.).

      If you have access to the Ansys Learning Hub (ALH), you will find the WB LS-DYNA training material. In chapter 3, there is information about the files written by the solver. Here is an example of content:

      You will find these files in the solver directory:

      You will find the WB LS-DYNA training on ALH here:

      https://jam8.sapjam.com/groups/aMA6tQ2siKgaRc9waZYwd0/overview_page/h1E4U3fDPcHQL0JtegqTV8

       

      Let me know how it goes.

       

      Reno.

    • Reno Genest
      Ansys Employee

      Hello Ben,

      Another option is to post-process the d3plot, glstat, rcforc, etc. using LS-PrePost. You can download the latest version here:

      https://ftp.lstc.com/anonymous/outgoing/lsprepost/4.9/

      Visit lsdyna.ansys.com for more resources.

       

      Reno.

    • Reno Genest
      Ansys Employee

      Hello Ben,

      If you use the RSM, all the files (d3plot, messag, glstat, etc.) will be downloaded automatically from the HPC cluster.

       

      Reno.

    • Ben_Ben
      Subscriber

      Thanks for all your advice Reno. Will move to RSM in the future, looks like a good product. 

    • Reno Genest
      Ansys Employee

      👍

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