G4 Cluster User Guide
The G4 cluster is available for general use by members of the SCL and partnering groups. Access to other groups is determined on a case by case basis. The PPC cluster is designed in part for CS code development so queue time limits are set to 2 days and may be reduced when fast turnaround is needed.
All jobs must be submitted through the batch system.
Running jobs outside the batch system without permission is grounds for having your access to 4pack revoked.
- The GAMESS code is installed on 4pack. To submit GAMESS jobs use the "gms" command.
Along with the usual GNU compilers, there is a patched version of gcc
available called gcc-vec that includes support for Motorola's Altivec C
MPI programs can be compiled with the following compiler wrappers:
Man pages are available for each of these wrappers. There are two versions of MPICH installed on 4pack to run MPI natively over Myrinet (MPICH-GM) and to use MPI over TCP either on Myrinet or Ethernet (MPICH-TCP). Both version are installed in /usr/local and you should add the desired versions bin directory to your path (e.g. for MPICH-gm add /usr/local/mpich-gm to your path).
- C: mpicc
- C++: mpiCC
- Fortran 77: mpif77
- Fortran 90: mpif90