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Featured Announcements

OpenCL now Available on Dirac GPU Cluster

October 30, 2013 by Francesca Verdier


As requested by many Dirac users, NERSC is migrating Dirac to a newer Linux version to enable capabilities such as OpenCL. We aim to convert the whole Dirac system to Scientific Linux 6.3 by Mid-November. 
We have migrated the beta nodes to Scientific Linux 6.3. Please run some test jobs to make sure your code will work in the new system. In particular, please test your MPI+Cuda codes in a multi-node environment. 
You can get to one of these nodes with:
qsub -I -V -q dirac_int -l nodes=1:ppn=8:beta

Or to get 2 nodes:
qsub -I -V -q dirac_reg -l nodes=2:ppn=8:beta

Inside the job you need to load the latest cuda and SL6 flavor of gcc:
module unload cuda
module load cuda/5.5
module unload pgi
module load gcc-sl6

If you dont have access to Dirac you may request access:


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Video Tutorial for Submitting a 2014 ERCAP Request available

September 17, 2013

Rushing to meet the September 22nd deadline for submitting your 2014 ERCAP renewal request? Would you spend sixteen and a half minutes to possibly save hours of frustration? Then check out the new video tutorial on How to Submit a 2014 ERCAP Request and get the information you need to speed through your ERCAP submission and save yourself time and headaches. 

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New Global Scratch File System

September 11, 2013 by Francesca Verdier

NERSC is pleased to announce the availability of a new file system: /global/scratch2. This file system is intended to replace the current /global/scratch, and is mounted on all NERSC platforms that mount /global/scratch. A new environment variable GSCRATCH2 has been created that points to your personal scratch directory in /global/scratch2.

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All Users Now Enabled on Edison Phase 2

August 30, 2013 by Francesca Verdier

All user accounts have been enabled on the second phase of Edison, a Cray XC30 with 5,200 compute nodes and roughly twice the sustained system performance of Hopper.  The user environment on Edison phase 2 is the same as that on Edison phase 1,  Of particular note is that the default programming environment uses the Intel compilers and the PGI compilers are not available. While most of the applications that were compiled for Edison phase 1 will run without recompilation, we strongly recommend that you recompile for the phase 2 system to get the best performance. For more information read the Edison pages.

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2014 NERSC allocation requests due September 22

August 13, 2013 by Francesca Verdier

NERSC's allocation submission system is now open for 2014 allocation requests. All current projects (including startup, education, and ALCC projects) must be renewed for 2014 if you wish to continue using
NERSC.  New project requests may be submitted as well (for either the remainder of 2013 or for 2014).

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