April 15, 2024 at 4:30 pm
igandiko
Ansys Employee

Did you try without -i. The correct command is i= DynaOpt.inp (not -i= DynaOpt.inp). It looks like dyna solver was called correctly. Please use the command below in a .bat file and use this bat file as case execution command. "ncpu=-8" will make the SMP solver use 8 cores with consistency flag turned on. 

"C:\Program Files\ANSYS Inc\v232\ansys\bin\winx64\LSDYNA.exe" -dp ncpu=-8 i=DynaOpt.inp

Note that the above command calls SMP version of ls-dyna. 

If your model is big and if you want to use more cores, MPP solver is probably better. The command to run MPP is different from SMP. A sample command is, 

\path\intel or MS MPI\mpiexe.exe -np 8 \path to intel or MS MPI ls-dyna exe\ i= DynaOpt.inpÂ