Learning Forum

[shk1048]

*** Error Computations stopped due to an out of bound constraint value.

     See previous output or the lst_errors.txt file.

     The finite difference scheme cannot handle this. The Random Search and RSM schemes can handle some cases.

My solver ran until 17 iteration without and error and then was not able to continue. Can someone explain what this error mean?

[Imtiaz Gandikota]

Did any of the sub-designs of current iteration terminate with an error? ls-tasc cannot move forward as it cannot compute DSA results (design sensitivities). This is a known issue. In future versions, ls-tasc will skip DSA computation for that iteration and continue. 

 Please check why ls-dyna run failed and try to fix it. You can manually run DynaOpt.inp file with your fixes and then update finished file with "normal termination". You can then run ls-tasc file again to continue to next iteration. 

[shk1048]

It takes almost 1hour for me to start a new set of iteration. I reran the simulation and waited for the second iteration to start. What can be the possible reason for that? Is it common in most of the cases? The version i am currently using is 971.R9.3.1 –m1 1200 –m2 800 –c prio_A –n 48 –p single