PSTSWM Origin2000 Communication Protocol Performance

Performance Studies using

PSTSWM

SGI/Cray Research Origin2000 Protocol Performance

(transpose LT experiment I-A / O(log P) transpose algorithm)

Date/Person: May 8, 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: logtrans
(assuming distributed FFT)
Number of Timesteps: 12
Results:

1x16 Processors / Problem T10L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  7.2601e-02   0.12   0.13   0.21 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   d1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   2   10 

1x8 Processors / Problem T21L8
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.9465e-01   0.11   0.09   0.18 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   c2 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   2   10 

1x16 Processors / Problem T21L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.3915e-01   0.16   0.15   0.28 
Three Fastest
Protocols
1st2nd3rd
  c1   a1   d1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   2   6 

1x32 Processors / Problem T21L32
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.7855e-01   0.20   0.19   0.35 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   d1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   2   6 

1x8 Processors / Problem T42L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.7847e+00   0.08   0.10   0.13 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   c2 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   2   10 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:06:25 EDT.