How to submit a Radioss restart simulation in AltairAccess?

A.Reinecke
A.Reinecke Altair Community Member
edited July 12 in Community Q&A

This question is about restarting a Radioss simulation on a HPC operated by AltairAccess. My company uses AltairAccess PBSWORKS 2021.1.1 (build date: 2021-02-18) and I use Radioss 2019.2 

Let's say I have a Radioss simulation which I have stopped at 80ms simulation time out of 100ms total simulation time. I have set up the simulation with a starter file JOBNAME_0000.rad and an engine file JOBNAME_0001.rad. At the end of the simulation (i.e. at 80ms), a restart file JOBNAME_0001_0001.rst has been created. 

If I would want to restart/continue the simulation on a local machine, then I would need the restart file and a new engine file in which I increase the run number (JOBNAME_0002.rad). 

Now, how I do this in AltairAccess? In particular, which files do I need to enter into the fields 'starter file', 'engine file' and/or 'include file' in the sub submission template? 

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Best Answer

  • Adarsh_20887
    Adarsh_20887
    Altair Employee
    edited July 12 Answer ✓

    Hello,

    Refer this link, to create checkpoint or restart files :

    https://2021.help.altair.com/2021/hwsolvers/rad/topics/solvers/rad/faq_rad_restart_r.htm

     

    In Altair Access Web, you create a dropdown list -  runtype --> this will  update the batch commandline for the radioss
    image

    1. in the start.py of your Radioss application defintion, update your batch command line 

    cmd += ' -'+ runtype +' '

    2.  upload the engine file and restart files or checkpointed files (even if you upload the starter file, if you choose to run only engine, it will use the restart files and start from where it was checkpointed)

    3.  choose engine  as runtype (in the job submission page on Altair Access)

    4.  submit the job 

    [ If in case , if there is a change in procedure or you had to make some adjustment, please update the procedure on this channel ] 

    Hope this helps

    Thank you,

    Adarsh

Answers

  • AK
    AK
    Altair Employee
    edited July 3

    Hello Mr. Reinecke,

    please send an email with the above content to hwsupport@altair.com to get further help.

    Principally, I would say you'd to enter restart file into the "Engine files" field. But this also might depend on your appdef script itself how it's handled.

    AK

  • Adarsh_20887
    Adarsh_20887
    Altair Employee
    edited July 12 Answer ✓

    Hello,

    Refer this link, to create checkpoint or restart files :

    https://2021.help.altair.com/2021/hwsolvers/rad/topics/solvers/rad/faq_rad_restart_r.htm

     

    In Altair Access Web, you create a dropdown list -  runtype --> this will  update the batch commandline for the radioss
    image

    1. in the start.py of your Radioss application defintion, update your batch command line 

    cmd += ' -'+ runtype +' '

    2.  upload the engine file and restart files or checkpointed files (even if you upload the starter file, if you choose to run only engine, it will use the restart files and start from where it was checkpointed)

    3.  choose engine  as runtype (in the job submission page on Altair Access)

    4.  submit the job 

    [ If in case , if there is a change in procedure or you had to make some adjustment, please update the procedure on this channel ] 

    Hope this helps

    Thank you,

    Adarsh

  • A.Reinecke
    A.Reinecke Altair Community Member
    edited July 12

    If I want to upload the restart/rst files, do I enter it as 'engine files' or 'include files' in AltairAccess? 

  • Adarsh_20887
    Adarsh_20887
    Altair Employee
    edited July 12
    A.Reinecke said:

    If I want to upload the restart/rst files, do I enter it as 'engine files' or 'include files' in AltairAccess? 

    Please upload the restart and engine file and choose the option "engine" in the runtype.

    Thank you,

    Adarsh

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