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: MPI
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
  8.7934e-02   0.08   0.10   0.19 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   c2 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   10   25 

1x8 Processors / Problem T21L8
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.9962e-01   0.04   0.06   0.07 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  3   11   25 

1x16 Processors / Problem T21L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.4169e-01   0.04   0.05   0.07 
Three Fastest
Protocols
1st2nd3rd
  a1   a6   c1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  3   11   25 

1x32 Processors / Problem T21L32
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  3.4559e-01   0.04   0.05   0.07 
Three Fastest
Protocols
1st2nd3rd
  a1   a6   c1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  3   13   25 

1x8 Processors / Problem T42L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.9798e+00   0.05   0.05   0.12 
Three Fastest
Protocols
1st2nd3rd
  a5   a4   a1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   14   25 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:06:23 EDT.