Apparently there are some works in progress to change the CGROUPS API in the kernel.
Accordingly to
http://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/
they want to allow only 1 process to become a CGROUPS manager.
So systemd is a good candidate. In this case we have to find a way to use the systemd CGROUPS API in OAR:
- /etc/oar/job_resource_manager_cgroups.pl - oarsh_shell
I have seen only a D-BUS API in systemd (no command line) and I didn't find the way to restrict the used cores (cpuset).
Some docs: