[Beowulf] file IO benchmark

[Joe Landman]

Hi Toon:

  Here is the IO-Bench page 
(http://www.sdsc.edu/PMaC/Benchmark/iobench/).  If you want to have my 
mpi version (or just a patch), send me a note offline.  The b_eff_io is 
described at http://www.llnl.gov/icc/lc/siop/papers/ucrl-jc-143979.pdf . 
  The two do rather different things.  The MPI-iobench does not use the 
MPI-IO mechanisms, rather simple file IO to a shared filesystem and a 
single file on that file system (stresses the locking and other aspects 
of the system).  The b_eff_io is a more general test.

Joe

Toon Knapen wrote:
> Joe Landman wrote:
> 
>>  A little more than a year ago we use io-bench from HPCC which I did a
>>quick MPI port with.  We were showing 1.8-2.1 GB/s sustained to a
>>Panasas disk (http://www.panasas.com) system from a cluster.  We also
>>used the oocore (see http://www.nsf.gov/div/index.jsp?org=OCI).  Again,
>>using the Panasas disk, we were about 5x the speed of the nearest SAN
>>solutions on 32 nodes, and more than an order of magnitude faster at 128
>>nodes.
>>
>>  If you want a copy of my rather naive MPI port of io-bench, let me see
>>if we can redistribute it.  If you want oocore, surf over to
>>http://www.nsf.gov/publications/pub_summ.jsp?ods_key=nsf0605 or grab it
>>from http://www.nsf.gov/pubs/2006/nsf0605/oocore.tar.gz
>>
> 
> 
> 
> Not familiar with your MPI-ported io-bench nor b_eff_io, how would you
> compare both?
> 
> toon

-- 
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: landman at scalableinformatics.com
web  : http://www.scalableinformatics.com
phone: +1 734 786 8423
fax  : +1 734 786 8452
cell : +1 734 612 4615