Benchmarking: HPL (optimised) with OpenMPI and Vanilla Centos

Install OpenMPI

Optionally rebuid OpenMPI ()

  yum install openmpi openmpi-devel

Setup the user environment

# add to the end of your ~/.bashrc
export PATH=$PATH:/usr/lib64/openmpi/bin
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib64/openmpi/lib

Build ATLAS

NOTE" Ensure throttling is disabled as ATLAS will give out

/etc/init.d/cpuspeed stop 

# may also have to apply this patch for ATLAS 3.10.1
patch -p0 CONFIG/src/probe_arch.c << EOF
@@ -238,8 +238,7 @@ int main(int nargs, char **args)
       printf("CPU MHZ=%d\n",
              ProbeOneInt(OS, asmd, targ, "-m", "CPU MHZ=", &sure));
    if (flags & Pthrottle)
-      printf("CPU THROTTLE=%d\n",
-             ProbeOneInt(OS, asmd, targ, "-t", "CPU THROTTLE=", &sure));
+      printf("CPU THROTTLE=0\n");
    if (flags & P64)
    {
       if (asmd == gas_x86_64)
EOF

Download From: http://sourceforge.net/projects/math-atlas/files/Stable/3.10.1/atlas3.10.1.tar.bz2/download

  wget http://downloads.sourceforge.net/project/math-atlas/Stable/3.10.1/atlas3.10.1.tar.bz2
  tar jxvf atlas3.10.1.tar.bz2 
  mkdir atlas3.10.1_build
  cd atlas3.10.1_build/
  /root/scratch/ATLAS/configure --prefix=/opt/atlas/3.10.1
  make 
  make check

Get Linpack

Latest versions are available from : http://www.netlib.org/benchmark/hpl/

  wget http://www.netlib.org/benchmark/hpl/hpl-2.1.tar.gz
  tar zxvf hpl-2.1.tar.gz