Learning Forum

[ge suo]

Hello staff,

My computer has a total of 16 logical processors. At the same time, I set the number of CPUs according to the manual, the units per job as 8 and the global limit as 16, but it is not full in the Task manager. I want to ask what is the situation, or how can I solve this problem?

thanks

[Imtiaz Gandikota]

These settings, units per job and global limit, are only used to calculate number of parallel jobs to submit at a time. Based on your input, ls-opt will calculate 16/8=2 and submits 2 jobs in parallel. The actual number of cpus used in the solver should be defined in ls-dyna solver command, for example, add ncpu=8 in solver command (for smp) or -np 8 (for mpp). LS-OPT has no control over the cpus used, it will simply run whatever command you have defined in stage solver command section. 

/path_to_lsdyna/ls-dyna_smp_d_R13.exe ncpu=8

[ge suo]

ok，thank you very much，i will try👍