CCM/MP-2D AlphaSC-500 Parallel Algorithm Comparisons

Performance Studies using

CCM/MP-2D

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

Date/Person: November 8, 1999 / P. Worley
Platform: Compaq AlphaServer SC at Compaq (fsehpc):
     16 ES40 4-way SMP nodes (500 MHz Alpha 21264 with 4MB L2 cache)
Environment: Digital UNIX V5.0;   RMS 2.32
Compilation Options: f90 -O4 -assume accuracy_sensitive -math_library accurate -align dcommons -align records -arch host -tune host
Math Library: DXML
Communication Library: MPI
Problem Size: T42L18
Number of Timesteps: 2-11
Results:

2 Processors / Problem 42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  2.1634e+01   t1    1x2    -  

4 Processors / Problem 42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  1.3206e+01   d0    1x4    -  

8 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  6.6371e+00   t0    1x8    -  

16 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  3.6567e+00   t2    1x16    -  

32 Processors / Problem T42L18
Optimal Algorithm
minalgorithmaspect rationmapping
  2.2184e+00   d0    2x16    +1  

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:03:36 EDT.