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: April 22, 1999 / P. Worley
Platform: SGI Origin2000 at Los Alamos National Laboratory (n12):
   128 250-MHz MIPS R10000 processors
Environment: IRIX 6.5
mpt_1.3.0.0
MIPSpro Compilers: Version 7.2.1
setenv MPI_DSM_MUSTRUN 1
Code Version: 6.4.3
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
  7.5466e-02   0.07   0.06   0.18 
Three Fastest
Protocols
1st2nd3rd
  c1   a1   d1 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   2   10 

1x8 Processors / Problem T21L8
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.5148e-01   0.09   0.09   0.18 
Three Fastest
Protocols
1st2nd3rd
  c1   a1   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
  1.9346e-01   0.16   0.16   0.34 
Three Fastest
Protocols
1st2nd3rd
  c1   d1   d6 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   1   8 

1x32 Processors / Problem T21L32
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.8169e-01   0.13   0.13   0.29 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   d1 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   2   9 

1x8 Processors / Problem T42L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.2714e+00   0.09   0.08   0.16 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a2 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   1   10 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:08:16 EDT.