PSTSWM Origin2000 Communication Protocol Performance

Performance Studies using

PSTSWM

SGI/Cray Research Origin2000 Protocol Performance

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

1x16 Processors / Problem T10L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  6.8664e-02   0.07   0.08   0.15 
Three Fastest
Protocols
1st2nd3rd
  c1   a1   e1 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   4   12 

1x8 Processors / Problem T21L8
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.2844e-01   0.04   0.05   0.10 
Three Fastest
Protocols
1st2nd3rd
  c1   a1   e1 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  3   6   12 

1x16 Processors / Problem T21L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.5547e-01   0.08   0.08   0.19 
Three Fastest
Protocols
1st2nd3rd
  c1   a1   e1 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   3   12 

1x32 Processors / Problem T21L32
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.3194e-01   0.11   0.06   0.63 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   e1 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   4   11 

1x8 Processors / Problem T42L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.0137e+00   0.05   0.06   0.11 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a2 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   6   12 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:12:22 EDT.