Basic HTML version of Foils prepared 17 November 1998

Foil 107 MPI Bandwidth on SGI Origin and Sun Shared Memory Machines

From Master Foilset for HPC Achitecture Overview CPS615 Basic Simulation Track for Computational Science -- Fall Semester 98. by Geoffrey C. Fox
NASA Ames Comparison of MPI on Origin 2000 and Sun E10000
Results from Samson Cheung of NAS (Ames)
Origin 2000: mpirun -np 2 ./lbw -B -n 4000 -D
Total transfer time: 57.281 sec.
Transfer rate: 69.8 transfers/sec.
Message size: 1000000 bytes
Bandwidth: 139.664 10e+06 Bytes/sec
Sun E10000: tmrun -np 2 ./lbw -B -n 4000 -D
Total transfer time: 54.487 sec.
Transfer rate: 73.4 transfers/sec.
Message size: 1000000 bytes
Bandwidth: 146.825 10e+06 Bytes/sec

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