#!SP2 ##16 Thin node system at University of Southampton, UK, June 1995 ##IBM 390 Power2 nodes, 62.5MHz, 128MByte Memory, 2*2GByte SCSI Disk ##Compiler version : xlc 1.3.0.19 ##Operating system : AIX 3.2.5 #Benchmarker was Dr Simeon Warner ================================================= === === === GENESIS Distributed Memory Benchmarks === === === === COMMS1 === === === === Program: Message Pingpong === === Version: PVM 3.1 Fortran 77 === === Authors: Roger W. Hockney === === Ian Glendinning === === Ade Miller === === Updates: Jun 1994 - Release 3.0 === === Jan 1994 - Release 2.3 === === Apr 1993 - Release 2.2 === === === ================================================= The measurement time requested for each test case was 1.00E+00 seconds No distinction was made between long and short messages Zero length messages were used in least squares fitting Case LENGTH(B) TIME(sec) RINF(B/s) N1/2(B) %error fit 1 0 2.185E-04 0.000E+00 0.000E+00 0.000E+00 2 1 2.189E-04 2.502E+06 5.468E+02 0.000E+00 3 2 2.214E-04 6.894E+05 1.504E+02 2.237E-01 4 4 2.333E-04 2.606E+05 5.637E+01 8.442E-01 5 6 2.222E-04 7.529E+05 1.652E+02 2.052E+00 6 8 2.205E-04 2.348E+06 5.190E+02 2.198E+00 7 10 2.223E-04 4.333E+06 9.595E+02 2.048E+00 8 20 2.271E-04 3.570E+06 7.899E+02 1.877E+00 9 30 2.520E-04 1.148E+06 2.507E+02 2.331E+00 10 40 2.289E-04 2.167E+06 4.788E+02 3.284E+00 11 50 2.346E-04 2.842E+06 6.304E+02 3.176E+00 12 60 2.383E-04 3.198E+06 7.105E+02 3.022E+00 13 70 2.395E-04 3.535E+06 7.867E+02 2.919E+00 14 80 2.518E-04 3.148E+06 6.990E+02 2.736E+00 15 90 2.758E-04 2.358E+06 5.195E+02 3.102E+00 16 100 2.728E-04 2.176E+06 4.781E+02 3.133E+00 17 110 2.699E-04 2.181E+06 4.793E+02 3.073E+00 18 120 2.744E-04 2.185E+06 4.803E+02 2.938E+00 19 130 2.827E-04 2.149E+06 4.720E+02 2.786E+00 20 140 2.918E-04 2.087E+06 4.575E+02 2.674E+00 21 150 3.025E-04 2.005E+06 4.382E+02 2.623E+00 22 160 3.018E-04 1.984E+06 4.333E+02 2.577E+00 23 170 3.081E-04 1.962E+06 4.282E+02 2.481E+00 24 180 3.080E-04 1.972E+06 4.305E+02 2.432E+00 25 190 3.091E-04 1.997E+06 4.364E+02 2.397E+00 26 200 3.005E-04 2.075E+06 4.553E+02 2.651E+00 27 210 3.038E-04 2.146E+06 4.725E+02 2.754E+00 28 220 2.827E-04 2.321E+06 5.150E+02 3.813E+00 29 230 2.851E-04 2.488E+06 5.561E+02 4.300E+00 30 240 2.848E-04 2.663E+06 5.991E+02 4.721E+00 31 250 2.878E-04 2.826E+06 6.393E+02 4.939E+00 32 260 2.946E-04 2.954E+06 6.711E+02 4.929E+00 33 270 2.907E-04 3.109E+06 7.098E+02 5.161E+00 34 280 2.883E-04 3.283E+06 7.534E+02 5.394E+00 35 290 2.930E-04 3.432E+06 7.908E+02 5.402E+00 36 300 2.921E-04 3.591E+06 8.309E+02 5.517E+00 37 400 3.122E-04 3.863E+06 9.009E+02 5.294E+00 38 600 3.203E-04 4.780E+06 1.142E+03 5.799E+00 39 800 3.115E-04 6.623E+06 1.630E+03 6.966E+00 40 1000 3.073E-04 9.233E+06 2.325E+03 7.820E+00 41 2000 3.618E-04 1.430E+07 3.689E+03 7.088E+00 42 5000 4.999E-04 1.945E+07 5.093E+03 5.259E+00 43 10000 8.230E-04 1.813E+07 4.728E+03 3.183E+00 44 20000 1.400E-03 1.768E+07 4.602E+03 1.860E+00 45 30000 1.912E-03 1.799E+07 4.693E+03 1.362E+00 46 40000 2.655E-03 1.727E+07 4.468E+03 1.166E+00 ------------------------ COMMS1: Message Pingpong ------------------------ Result Summmary --------------- rinf = 17.268 MByte/s, nhalf = 4468.450 Byte, startup = 258.770 us