PSTSWM Parallel Performance

Performance Studies using

PSTSWM

Experiment C Distributed FFT Performance

These results represent the minimum execution time for each platform, using the optimal parallel implementation, math libraries where available, and the best available compilers. The legends list the platforms in alphabetical order. Results are presented for both MPI-only experiments and best over all communication libraries.

Distributed FFT (mpi)
Platform Comparison
  T42L2     T42L2     T42L16    T85L4     T85L4     T85L32 
  P=32     P=16     P=8     P=32     P=16     P=8  
  best platform   t3e900  t3e900  t3e900  t3e900  t3e900  t3e900 
  best timing   0.65006E-01  0.61755E-01  0.38021E+00  0.41405E+00  0.38966E+00  0.31792E+01 

Distributed FFT (all)
Platform Comparison
  T42L2     T42L2     T42L16    T85L4     T85L4     T85L32 
  P=32     P=16     P=8     P=32     P=16     P=8  
  best platform   t3e900  t3e900  t3e900  t3e900  t3e900  t3e900 
  best library   shmem  shmem  shmem  shmem  shmem  shmem 
  best timing   0.44069E-01  0.38489E-01  0.30647E+00  0.35617E+00  0.32986E+00  0.28550E+01 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 09:58:49 EDT.
81802 accesses since 1/2/96.