PSTSWM Origin2000 Communication Protocol Performance

Performance Studies using

PSTSWM

SGI/Cray Research Origin2000 Protocol Performance

(transpose LT experiment II-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: SHMEM
Parallel Algorithm: logtrans
(assuming transpose FFT)
Number of Timesteps: 12
Results:

8x8 Processors (Column Major Ordering) / Problem T42L16
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  4.0263e-01   0.04   0.06   0.08 
Three Fastest
Protocols
1st2nd3rd
  c1   a2   a1 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   5   10 

8x8 Processors (Column Major Ordering) / Problem T85L32
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  4.3121e+00   0.08   0.13   0.15 
Three Fastest
Protocols
1st2nd3rd
  a2   b6   b2 
      Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   5   10 

Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:06:35 EDT.