Mpiexec also works with sys-cluster/torque, which is readily downloadable (unlike openpbs). I suggest replacing DEPEND="virtual/libc sys-cluster/openpbs sys-cluster/mpich" with DEPEND="virtual/libc || ( sys-cluster/torque sys-cluster/openpbs ) sys-cluster/mpich" Reproducible: Always Steps to Reproduce: 1. 2. 3.
fixed. thanks for your help.