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: SHMEM
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
  3.4876e-02   0.12   0.14   0.25 
Three Fastest
Protocols
1st2nd3rd
  c1   a1   e2 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   4   11 

1x32 Processors / Problem T42L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  5.2052e-02   0.15   0.19   0.35 
Three Fastest
Protocols
1st2nd3rd
  e2   c1   a1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   4   9 

1x8 Processors / Problem T42L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.5170e-01   0.06   0.07   0.12 
Three Fastest
Protocols
1st2nd3rd
  c1   e1   a2 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   6   12 

1x16 Processors / Problem T85L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.9301e-01   0.05   0.06   0.11 
Three Fastest
Protocols
1st2nd3rd
  c1   a1   e1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   6   12 

1x32 Processors / Problem T85L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.2245e-01   0.07   0.08   0.14 
Three Fastest
Protocols
1st2nd3rd
  c1   a1   e1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   6   12 

1x8 Processors / Problem T85L4
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.5377e+00   0.05   0.06   0.09 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   e1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   5   12 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:07:01 EDT.