PSTSWM Origin2000 Communication Protocol Performance

Performance Studies using

PSTSWM

SGI/Cray Research Origin2000 Protocol Performance

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

1x16 Processors / Problem T21L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  4.5455e-02   0.19   0.17   0.40 
Three Fastest
Protocols
1st2nd3rd
  a6   a2   a3 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   4   14 

1x32 Processors / Problem T42L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  9.3923e-02   0.26   0.11   0.78 
Three Fastest
Protocols
1st2nd3rd
  a1   a6   a3 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   8   14 

1x8 Processors / Problem T42L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.5495e-01   0.08   0.10   0.13 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   10   25 

1x16 Processors / Problem T85L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.9660e-01   0.07   0.07   0.13 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   8   25 

1x32 Processors / Problem T85L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.4623e-01   0.11   0.11   0.26 
Three Fastest
Protocols
1st2nd3rd
  a6   a3   c1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   6   22 

1x8 Processors / Problem T85L4
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.5379e+00   0.04   0.03   0.07 
Three Fastest
Protocols
1st2nd3rd
  a1   a6   a5 
      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 10:07:21 EDT.