USC Center for High Performance Computing and Communications

:: Systems & Resources
 > Linux Computing Resource
 > Sun Computing Resource
 > HPCC Policies

:: Getting Access
 > Account Applications
 > Account Resource Limits

:: Learning to Use
 > Linux Computing Resource
    - Standard Environment
    - Setting Up the Compiler
    - Temporary Disk Space
    - USCLinux
    - Portable Batch System
    - MPI Tutorials
    - MPI Compilers
    - MPI Execution
    - Gaussian03
    - Useful Commands
    - Compiler Help Pages
    - 64 Bit Nodes
 > Sun Computing Resource
    - Standard Environment
    - Setting Up the Compiler
    - Temporary Disk Space
    - Portable Batch System
    - MPI Tutorials
    - MPI Execution
    - Applications on Almaak-01

64-Bit Nodes

x86_64 64-bit Opteron nodes and headnode, hpc-opteron.usc.edu,are available. We have 2 kinds of machines:dual-processor with 2GB RAM, and dual-processor/dual-core with 4GB RAM. These machines are available through the default main, large, long, and quick execution queues.

Selection of 32-bit or 64-bit nodes is done with the arch job resource. With qsub, simply add "-l arch=i686" or "-l arch=x86_64" to select 32-bitor 64-bit machines.

Most existing 32-bit programs should run on 64-bit nodes without modification. All users should verify that their existing jobs run correctly on x86_64nodes and report any failures or missing libraries to hpcc@usc.edu.

If you wish to build 64-bit programs, logon to hpc-opteron. Like hpc-login2, it has a 64-bit environment with 64-bit compilers and libraries. 64-bit programs should always be submitted with the following option in your qsub command: "-l arch=x86_64".

There is no default arch. This means that jobs can run on any node and span architectures, unless either arch is requested.

 
  ITS Policies       Contact HPCC