Cray-T3D timings with C23f3
----------------------
Nodes 16 32 64 128 256 512
E ext 2404.9 1193.5 608.4 313.4 163.3 85.8
E int 38.9 26.3 19.8 16.6 15.0 14.2
Wait 23.2 15.2 8.6 8.7 11.6 9.9
Comm 37.4 41.1 44.9 48.0 51.2 56.5
List 184.9 96.7 52.5 31.1 20.7 15.7
Integ 6.3 4.8 4.2 4.2 4.6 5.1
Total 2695.5 1377.6 738.4 422.0 266.2 187.1
Total Elapsed 2765.0 1439.4 754.8 454.2 309.6 243.6
Total(hours) 0.768 0.400 0.210 0.126 0.0860 0.0677
Eff 87.5% 83.7% 79.8% 66.5% 48.7% 31.0%
Speedup(Est.) 14.0 26.8 51.1 85.1 124.8 158.6
E ext : External energy terms (electrostatics + Lenard-Jones)
E int : Internal energy terms (bond, angle, dihedral)
Wait : Load unbalance
Comm : Communication time (Vector Distr. Global {Sum,Brdcst})
List : Nonbond list generation time
Integ : Time needed to integrate equations of motion
Total : Total elapsed time
Eff : Efficiency = speedup divided by number of nodes
Speedup: Time for N nodes divided by time for one node. Estimated since single
cpu time is not known
From
Barry Bolding
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Dr. Barry Bolding ___ H H
Cray Research, Inc. / \___/ H \
Cray Research Park \___/ \___/ Si-H
655E Lone Oak Drive / \___/ \___/ H
Eagan, MN 55121 \___/ \___/ \___/ H
\___/ \___/ \___/
Phone: (612)-683-3642 \___/ \___/ \
Internet: barry@cray.com \___/ \___/
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***