On Thu, May 24, 2012 at 5:44 AM, William Hay <[email protected]> wrote: > I assume you are referring to your cgroups stuff here. Some of us are > still using Linux versions without cgroups > (like Scientific Linux 5).
William, yes and no... I was mainly referring to cgroups integration's ability to handle process tagging, but we also have something else that we are adding in GE 2011.11u2 if most of our users are still using very old kernels - note that the first cgroups capable kernel came out in May 2008. BTW, our ssh HOWTO was updated yesterday to reflect the cgroups integration's ability to use a stock sshd for tight job control: http://gridscheduler.sourceforge.net/howto/qrsh_qlogin_ssh.html For those who are still using RHEL 5, CentOS 5, Oracle Linux 5, or Scientific Linux 5 - ie. all the common RHEL based Linux Distributions, a kernel upgrade is needed to use cgroups. It may sound like a lot of work, but Oracle has already created a yum installable package for the all of the RHEL based distributions. Installing Oracle's Unbreakable Enterprise Kernel is as simple as upgrading a package, and UEK is compatible with RHEL for the user-space applications point of view. In fact, Oracle DB & middleware, SAP are certified on both the RHEL based kernel and Oracle's UEK. See SAP's announcement: http://scn.sap.com/community/oracle We (Open Grid Scheduler) tested our code on both the RHEL based kernel and Oracle's UEK starting from the hwloc integration back in April 2011: http://gridscheduler.sourceforge.net/projects/hwloc/GridEnginehwloc.html As a newer kernel, the UEK has much better performance than the old RHEL 5 based kernel. Note that UEK 2 was released earlier this year and has more performance improvements & new features - eg. BrtFS. The only catch is that if you have kernel modules that require specific kernel versions and can only use a 4+ year old kernel, then let us know and if there are enough number of sites running old kernels, we will add another new capability in PDC to track the stock sshd and handle it as if it is a tight SGE-SSH daemon. > With cgroups making for a much more enforceable resource > control mechanism could this be relaxed? Thanks again for the suggestion - we will look into it. If it is technically doable, we will add it to GE 2011.11u2 the latest. Rayson > > William _______________________________________________ users mailing list [email protected] https://gridengine.org/mailman/listinfo/users
