Comment (by Artectek):

indeed it set

CACTUS_NUM_THREADS=8

but he info(Carpet) shows :

INFO (Carpet): There are 24 threads per process

shouldnt it be 8 threads per process?

worth to mention that

Although OpenMP is enabled, the environment variable CACTUS_NUM_THREADS is not set.

i submited this job on a login node,but openmpi ran it on a compute node,could this be the problem?

--
Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2670/refinement-prolongation-all-points-must