CS 103, Fall Quarter 2000

Cluster Description (20 nodes):

Computing Nodes are 19 single processor 500Mhz Aplha machines with 512MB memory, 18GB local storage, interconnected by 100Mb/s ethernet and ServerNet 2 technology. Compute nodes names are hux[2-20].mcs.anl.gov.

hux2$ cat /proc/cpuinfo
cpu			: Alpha
cpu model		: EV6
cpu variation		: 7
cpu revision		: 0
system type		: Tsunami
system variation	: Monet
cycle frequency [Hz]	: 500000000 
BogoMIPS		: 996.14
platform string		: COMPAQ Professional Workstation XP1000
cpus detected		: 1

Login Node is 1 single processor 500Mhz Alpha machine with 256M memory, 3x18gig + 1x9gig local storage, interconnected by 100Mb/s ethernet and ServerNet 2. Login node name is hux1.mcs.anl.gov.

.tchrc (for mpirun/mpicc/...):

 set path=($path /usr/local/mpi/bin)

Makefile (example)
mpihello.c

Compiling:

make

Running:

mpirun -np N hux2 hux3 hux4 ... huxN program-name [arguments]

or use this perl-script (run.pl N program-name [arguments]):

#!/usr/bin/perl
use strict;

my $mach = ""; 
my $j = 2; 
my $largv = "";
while ($ARGV[$j]) 
  { 
    $largv = "$largv $ARGV[$j]"; $j++; 
  }
for ($j = 2; $j <= min(20, $ARGV[0] + 1); $j++) 
  { 
    $mach = "$mach hux$j"; 
  }
print "mpirun -np $ARGV[0] $mach $ARGV[1] $largv\n";
print `mpirun -np $ARGV[0] $mach $ARGV[1] $largv`;

sub min 
{
  my ($a, $b) = @_;
  if ($a > $b ) 
    {
      return $b;
    } 
  else 
    {
      return $a;
    }
};

1;