PSTSWM Origin2000 Communication Protocol Performance

Performance Studies using

PSTSWM

SGI/Cray Research Origin2000 Protocol Performance

(transpose LT experiment II-A / O(P) sendrecv 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: srtrans
(assuming transpose FFT)
Number of Timesteps: 12
Results:

1x16 Processors / Problem T21L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  4.6982e-02   0.24   0.22   0.63 
Three Fastest
Protocols
1st2nd3rd
  a0   a1   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  3   6   14 

1x32 Processors / Problem T42L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  9.5858e-02   0.37   0.14   0.86 
Three Fastest
Protocols
1st2nd3rd
  a0   a1   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   5   15 

1x8 Processors / Problem T42L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.5447e-01   0.09   0.09   0.18 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   8   25 

1x16 Processors / Problem T85L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.9860e-01   0.10   0.10   0.23 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   6   25 

1x32 Processors / Problem T85L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.4627e-01   0.17   0.13   0.41 
Three Fastest
Protocols
1st2nd3rd
  a1   a0   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   6   17 

1x8 Processors / Problem T85L4
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.5446e+00   0.04   0.03   0.09 
Three Fastest
Protocols
1st2nd3rd
  a1   a6   a4 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   15   25 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:06:59 EDT.