Yes, it hurts us quite badly because our compute farm is based on shared storage - we use NFS&auth_sys. This means we are already limited to 16 groups and GE is allocating 1 for itself. Tried investigate Kerberos support for GE (which would be a perfect solution as we could use NFS&krb5 -> no groups limit) but it looks like it is far from being usable at the moment.
Ondrej -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of William Hay Sent: Monday, December 07, 2015 4:50 PM To: [email protected] Subject: Re: [SGE-discuss] SGE 8.1.8 CGROUP question On Mon, Dec 07, 2015 at 03:20:08PM +0000, Ondrej Valousek wrote: > SGE can use CGROUPS for this bookkeeping you mentioned, too. It is just a > different filesystem, so it is quite simple to figure out which process > belongs to which cgroup. > To me, when using cgroups, additional GID should not be needed any longer. At > least per: > > http://blogs.scalablelogic.com/2012/05/grid-engine-cgroups-integration > .html > > Ondrej I think the cgroups implementation on SoGE differs from the OGS one. It doesn't do everything the OGS one does. Supplementary GIDS are more portable than cgroups and have a natural fit to the traditional unix access control model. While cgroups are probably better than GIDs for killing jobs. One thing we do with the additional GID is control access to GPUs by chgrping them from the prolog. While I believe you can do similar tricks with cgroups its a little more involved. Is the additional GID actually causing you any problems? William ----- The information contained in this e-mail and in any attachments is confidential and is designated solely for the attention of the intended recipient(s). If you are not an intended recipient, you must not use, disclose, copy, distribute or retain this e-mail or any part thereof. If you have received this e-mail in error, please notify the sender by return e-mail and delete all copies of this e-mail from your computer system(s). Please direct any additional queries to: [email protected]. Thank You. Silicon and Software Systems Limited (S3 Group). Registered in Ireland no. 378073. Registered Office: South County Business Park, Leopardstown, Dublin 18. _______________________________________________ SGE-discuss mailing list [email protected] https://arc.liv.ac.uk/mailman/listinfo/sge-discuss
