PSTSWM Paragon Communication Protocol Performance

Performance Studies using

PSTSWM

Intel Paragon Protocol Performance

(distributed LT experiment A2 / recursive halving sum algorithm)

Date/Person: June 4, 1998 / P. Worley
Platform: Intel Paragon XP/S 150 MP at Oak Ridge National Laboratory:
     1024 MP nodes (3 50-MHz iPSC/860 processors per node)
Environment: Paragon OSF/1 Release 1.0.4 Server 1.4 R1_4_5
f77/Paragon Paragon Version R5.0.3
Code Version: 6.3
Compilation Options: if77 -O4 -Mnodepchk -Knoieee -Msafealloc
Math Library: none
Communication Library: NX
Parallel Algorithm: halfsum
Partition: 4x2, 4x4, or 8x4
Results:

1x16 Processors / Problem T21L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.2845e-01   0.03   0.03   0.06 
Three Fastest
Protocols
1st2nd3rd
  c2   d2   c3 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  1   22   24 

1x32 Processors / Problem T42L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  3.1668e-01   0.03   0.03   0.06 
Three Fastest
Protocols
1st2nd3rd
  d2   c2   c3 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  2   20   24 

1x8 Processors / Problem T42L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.7092e+00   0.01   0.01   0.03 
Three Fastest
Protocols
1st2nd3rd
  b6   d6   b4 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  15   24   24 

1x16 Processors / Problem T85L1
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.5497e+00   0.01   0.01   0.04 
Three Fastest
Protocols
1st2nd3rd
  b4   b6   d4 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  9   24   24 

1x32 Processors / Problem T85L2
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  2.9490e+00   0.03   0.02   0.07 
Three Fastest
Protocols
1st2nd3rd
  b4   b5   b6 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  7   22   24 

1x8 Processors / Problem T85L4
Runtime Statistics
min(mean-min)/min(median-min)/min(max-min)/min
  1.8472e+01   0.01   0.01   0.02 
Three Fastest
Protocols
1st2nd3rd
  b4   b5   b6 
       Number of Proctocols With
Runtimes Within X% of Min
1%5%25%
  10   24   24 

DISCUSSION

The Paragon processor grid partitions were chosen to match those used for the October, 1994 SUNMOS data.
Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 10:29:35 EDT.