PSTSWM Origin2000 Communication Protocol Performance

Performance Studies using

PSTSWM

SGI/Cray Research Origin2000 Protocol Performance

(transpose LT experiment II-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 transpose FFT)
Number of Timesteps: 12
Results:

1x16 Processors / Problem T21L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  4.0965e-02   0.07   0.10   0.13 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a2 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  3   4   10 

1x32 Processors / Problem T42L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  5.0646e-02   0.07   0.11   0.15 
Three Fastest
Protocols
1st2nd3rd
  a1   a2   c1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   4   10 

1x8 Processors / Problem T42L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.1238e-01   0.05   0.07   0.10 
Three Fastest
Protocols
1st2nd3rd
  c1   a2   a1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   4   10 

1x16 Processors / Problem T85L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.8809e-01   0.06   0.08   0.12 
Three Fastest
Protocols
1st2nd3rd
  a2   a1   c2 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   4   10 

1x32 Processors / Problem T85L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  3.3874e-01   0.07   0.10   0.14 
Three Fastest
Protocols
1st2nd3rd
  a1   a2   c1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  3   4   10 

1x8 Processors / Problem T85L4
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.3821e+00   0.09   0.11   0.15 
Three Fastest
Protocols
1st2nd3rd
  a2   a1   b6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   4   10 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:06:33 EDT.