PSTSWM Origin2000 Communication Protocol Performance

Performance Studies using

PSTSWM

SGI/Cray Research Origin2000 Protocol Performance

(transpose FFT experiment C / O(P) swap transpose algorithm)

Date/Person: May 11, 1998 / P. Worley
Platform: SGI Origin2000 at Los Alamos National Laboratory (nirvana11):
   128 195-MHz MIPS R10000 processors
Environment: IRIX 6.5
mpt_1.2.0.1
MIPSpro Compilers: Version MIPS pro_7.2
Code Version: 6.3
Compilation Options: f77 -64 -i4 -O3
Math Library: SCSL
Communication Library: MPI
Parallel Algorithm: swtrans
Number of Timesteps: 12
Results:

16x4 Processors (Column Major Ordering) / Problem T21L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.2967e-01   0.10   0.04   0.29 
Three Fastest
Protocols
1st2nd3rd
  a0   a1   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   14   23 

8x8 Processors (Column Major Ordering) / Problem T42L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  3.6416e-01   0.07   0.08   0.13 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a0 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   10   25 

16x4 Processors (Column Major Ordering) / Problem T42L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  3.5878e-01   0.08   0.09   0.17 
Three Fastest
Protocols
1st2nd3rd
  a1   a0   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   8   25 

32x2 Processors (Column Major Ordering) / Problem T42L32
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  7.2075e-01   0.09   0.09   0.21 
Three Fastest
Protocols
1st2nd3rd
  a1   a0   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   6   25 

8x8 Processors (Column Major Ordering) / Problem T85L32
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  3.0833e+00   0.04   0.04   0.13 
Three Fastest
Protocols
1st2nd3rd
  a4   a5   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  3   13   25 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:07:18 EDT.