PSTSWM Origin2000 Communication Protocol Performance

Performance Studies using

PSTSWM

SGI/Cray Research Origin2000 Protocol Performance

(transpose FFT experiment C / O(P) sendrecv 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: SHMEM
Parallel Algorithm: srtrans
Number of Timesteps: 12
Results:

16x4 Processors (Column Major Ordering) / Problem T21L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.0194e-01   0.08   0.08   0.17 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   e1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   5   12 

8x8 Processors (Column Major Ordering) / Problem T42L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  4.3438e-01   0.03   0.03   0.07 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   e1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  4   8   12 

16x4 Processors (Column Major Ordering) / Problem T42L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  3.3178e-01   0.04   0.04   0.09 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a2 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   7   12 

32x2 Processors (Column Major Ordering) / Problem T42L32
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  6.1466e-01   0.07   0.10   0.13 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   c2 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   4   12 

8x8 Processors (Column Major Ordering) / Problem T85L32
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  4.1198e+00   0.06   0.07   0.09 
Three Fastest
Protocols
1st2nd3rd
  a1   b1   c1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   2   12 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:06:58 EDT.