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: MPI
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
  4.2646e-02   0.10   0.12   0.17 
Three Fastest
Protocols
1st2nd3rd
  a1   a6   c1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   8   25 

1x32 Processors / Problem T42L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  5.4138e-02   0.09   0.10   0.17 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  3   7   25 

1x8 Processors / Problem T42L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.0979e-01   0.06   0.09   0.10 
Three Fastest
Protocols
1st2nd3rd
  a1   a6   c1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  4   9   25 

1x16 Processors / Problem T85L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.7719e-01   0.06   0.06   0.09 
Three Fastest
Protocols
1st2nd3rd
  a1   a6   a5 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   9   25 

1x32 Processors / Problem T85L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  3.3445e-01   0.05   0.07   0.09 
Three Fastest
Protocols
1st2nd3rd
  a1   a6   c1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   9   25 

1x8 Processors / Problem T85L4
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.3796e+00   0.09   0.09   0.15 
Three Fastest
Protocols
1st2nd3rd
  a1   a3   b1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   3   25 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:06:31 EDT.