Dear Martyn,
It will depend on the interconnect. If you're using a single gigabit ethernet switch then you will probably see little difference between tcgmsg and mpich. If you have a more expensive interconnect such as myrinet then you should be building global arrays on top of mpi.
Running the benchmark suite will give you hard numbers for the different options.
Best wishes, Nick Wilson
Wheeler, Dr M.D. wrote:
Could someone enlighten me as to which is the best to use out of MPI or TCGMSG on an opteron linux system?
Thanks in advance
Martyn
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Dr. Martyn D. Wheeler
Department of Chemistry
University of Leicester
University Road
Leicester, LE1 7RH, UK.
Tel (office): +44 (0)116 252 3985
Tel (lab): +44 (0)116 252 2115
Fax: +44 (0)116 252 3789
Email: [EMAIL PROTECTED]
http://www.le.ac.uk/chemistry/staff/mdw10.html
