CCM/MP-2D T3E-900 Parallel Algorithm Comparisons

Performance Studies using

CCM/MP-2D

SGI/Cray Research T3E-900 CCM/MP-2D
Parallel Algorithm Comparison

Date/Person: February, 1999 / P. Worley
Platform: T3E-900 at National Energy Research Scientific Computing Center (mcurie.nersc.gov):
   532 450-MHz DEC Alpha EV5 RISC processors
Environment: UNICOS/mk 2.0.3.41
mpt 1.2.1.3
Cray CF90 Version 3.1.0.3
Compilation Options: -dp -Oscalar3 -Wl,-Dstreams=on
Math Library: libsci
Communication Library: MPI
Problem Size: T42L18
Number of Timesteps: 1-10
Results:

2 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  8.9733e+01   t0    1x2    -1  

4 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  5.2361e+01   t0    1x4    -1  

8 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  2.5385e+01   t0    1x8    -1  

16 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  1.4360e+01   t1    1x16    -1  

32 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  7.7441e+00   t0    1x32    -1  

64 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  4.5223e+00   t0    2x32    +1  

128 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  2.6147e+00   t0    4x32    -1  

256 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  1.6636e+00   t0    8x32    +1  

512 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  2.5665e-01   d0    16x32    -1  

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:29:00 EDT.