CCM/MP-2D AlphaSC-667 Parallel Algorithm Comparisons

Performance Studies using

CCM/MP-2D

Compaq AlphaServer SC CCM/MP-2D
Parallel Algorithm Comparison

Date/Person: April 24-26, 2000 / P. Worley
Platform: Compaq AlphaServer SC at Oar Ridge National Laboratory (falcon.ccs.ornl.gov):
     64 ES40 4-way SMP nodes (667 MHz Alpha 21264a with 8MB L2 cache)
Environment: Digital UNIX V5.0;   RMS 2.36
Compilation Options: f90 -O4 -assume accuracy_sensitive -math_library fast -align dcommons -align records -arch host -tune host
Math Library: none
Communication Library: MPI
Problem Size: T170L18
Number of Timesteps: 2-15
Results:

16 Processors / Problem T170L18
Optimal Algorithm
minalgorithmaspect rationmapping
  6.7098e+01   t2    1x16    -  
 

32 Processors / Problem T170L18
Optimal Algorithm
minalgorithmaspect rationmapping
  3.6659e+01   d0    4x8    +1  

64 Processors / Problem T170L18
Optimal Algorithm
minalgorithmaspect rationmapping
  1.9981e+01   t6    4x16    -1  

128 Processors / Problem T170L18
Optimal Algorithm
minalgorithmaspect rationmapping
  1.0430e+01   t4    8x16    -1  

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:06:01 EDT.