2018 documentation reference
Abaqus | Execution | Parallel Execution | Parallel execution in Abaqus/Standard
abaqus job=job-name cpus=n
abaqus job=job-name standard_parallel=all cpus=n
sequential abaqus jobs
abaqus interactive job=jobname1 cpus=4 & abaqus interactive job=jobname2
The "interactive" option makes sure the first job completes before the second starts.
reference: http://imechanica.org/node/18290