PSTSWM Origin2000 Communication Protocol Performance

Performance Studies using

PSTSWM

SGI/Cray Research Origin2000 Protocol Performance

(transpose FFT experiment C/ O(log P) transpose algorithm)

Date/Person: May 11, 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
Number of Timesteps: 12
Results:

16x4 Processors (Column Major Ordering) / Problem T21L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.0720e-01   0.05   0.07   0.09 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a6 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  4   10   25 

8x8 Processors (Column Major Ordering) / Problem T42L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  4.2824e-01   0.06   0.08   0.14 
Three Fastest
Protocols
1st2nd3rd
  a1   a4   c1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  4   12   25 

16x4 Processors (Column Major Ordering) / Problem T42L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  4.3392e-01   0.06   0.08   0.10 
Three Fastest
Protocols
1st2nd3rd
  a1   c1   a5 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  4   9   25 

32x2 Processors (Column Major Ordering) / Problem T42L32
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.0012e+00   0.06   0.06   0.15 
Three Fastest
Protocols
1st2nd3rd
  a4   a5   a3 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   7   25 

8x8 Processors (Column Major Ordering) / Problem T85L32
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  4.3923e+00   0.16   0.10   0.50 
Three Fastest
Protocols
1st2nd3rd
  a5   a4   d4 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   7   19 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:06:29 EDT.