Caltech Center for Advanced Computing Research » PM http://www.cacr.caltech.edu/main ...at the forefront of computational science and engineering Fri, 03 May 2013 17:16:51 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 SHC Software Stack Upgrade – Update http://www.cacr.caltech.edu/main/?p=677 http://www.cacr.caltech.edu/main/?p=677#comments Wed, 09 Sep 2009 17:37:58 +0000 cacrweb http://www.cacr.caltech.edu/main/?p=677 Important Information for SHC Users

As of Sept 8, 2009, SHC has been transitioned to the new sw stack (RHEL+OpenIB). There are currently 115 core4 nodes and 65 core8 nodes, in production. For more information, please visit the SHC Getting Started / System Guide.

]]> http://www.cacr.caltech.edu/main/?feed=rss2&p=677 0 SHC Software Stack Upgrade http://www.cacr.caltech.edu/main/?p=653 http://www.cacr.caltech.edu/main/?p=653#comments Thu, 03 Sep 2009 16:58:54 +0000 cacrweb http://www.cacr.caltech.edu/main/?p=653 Important Information for SHC Users

Over the next couple of days, more backend nodes from shc-a will be transitioned to shc-[c,new]’s cluster of backend nodes, running the new software stack. By Sept 4, there will be just 24 shc-a backend nodes, all the rest of the compute nodes will be running the new software stack, seen from shc-[new,c].

  • Please port your codes to the new software environment if you’ve not already done so!
  • Please report any porting problems you’re having; we’ll help asap.
  • Details on how to rebuild your code for the new SHC environment can be found here
  • Your MPI based code must be rebuilt for the new and improved shc software stack.

Preventive Maintenance on Sept 8 from 0800 to 1400 will encompass testing the complete transition of SHC compute and head node resources to the upgraded software stack environment. The fully upgraded production SHC cluster configuration will be two head nodes (shc-[a,b]) and 1180 Opteron compute node cores (163 dual cpu/dual core + 66 dual cpu/quad core).

Questions or concerns about the upgrade? Just let us know.

]]> http://www.cacr.caltech.edu/main/?feed=rss2&p=653 0 SHC back in production mode http://www.cacr.caltech.edu/main/?p=558 http://www.cacr.caltech.edu/main/?p=558#comments Wed, 01 Jul 2009 20:16:07 +0000 cacrweb http://www.cacr.caltech.edu/main/?p=558 Thanks to SHC users for your patience during Preventive Maintenance on the InfiniBand chassis and associated infrastructure. Any questions, comments, or concerns should be addressed to:

]]> http://www.cacr.caltech.edu/main/?feed=rss2&p=558 0 SHC Preventive Maintenance Notice http://www.cacr.caltech.edu/main/?p=550 http://www.cacr.caltech.edu/main/?p=550#comments Fri, 12 Jun 2009 17:56:44 +0000 cacrweb http://www.cacr.caltech.edu/main/?p=550 CACR’s Shared Heterogeneous Cluster (SHC) will take extended Preventive Maintenance in the near future to address issues with the InfiniBand switch – the fast interconnect fabric for the cluster.

Downtime is scheduled for Monday, June 29, 8AM through Tuesday, June 30, 12 noon to deploy a new switch chassis. After this major hardware upgrade/repair, the cluster will be much more serviceable and will be operating with optimal communications.

SHC user questions or concerns are welcome, please contact:

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