AMBER Archive (2003)

Subject: Opteron Experience

From: ian r gould (i.gould_at_imperial.ac.uk)
Date: Thu Jul 10 2003 - 08:29:38 CDT

Hi All

I see there is a fair amount of bandwidth on the opteron stuff. We have
4 dual 240's and a dual 244 here all running redhat 8.0.95 g77/gcc/lam
compiled so here are the numbers for our favourite benchmarks.
I also have a port of g98 to 64-bit so numbers for that and the 32-bit
ifc compiled are available on request. We also have some very
preliminary NWCHEM numbers as well.

JAC time per step
hammer64 1.4Ghz Opteron RH 8.0.95 g77/atlas 1
1.07
        
2 0.55
        
4 0.31
        
8 0.17 (6.29)
                   1.8Ghz Opteron 2
0.44

The size of the JAC system is somewhat small by today's standards so
here is a more relevant comparison, opteron is g77_atlas 64/bit
binaries, mp2200's are the ifc 32bit

Amber 7 Timings
                                
System
Dual AMD 2200MP - 512MB 266MHz DDR Ram
Gigabit Networking
A02-A09
                                
IFC v7.0
Amber7 compiled with default options and Blas library
                                
LADH
1LDY Test 1000steps * 1fs
ca = 76000 atoms
Gigabit Gigabit - With ROWAT and RLE
No. CPUs Wall Clock (s) Speed up (time for 1cpu/ time for x cpu)
Wall
Clock (s) Speed up (time for 1cpu/ time for x cpu)
1 8551.45 1 8551.45 1
2 4559.18 1.875655271 4308.00 1.985016249
4 2677.1 3.194296067 2416.00 3.53950745
8 1569.26 5.449351924 1500.00 5.700966667
16 1031 8.294325897 984.00 8.690497967
Opteron
1 6463 1
2 3271 1.98
8 966 6.69

rt_polymerase
No. CPUs Wall clock time Parallel Speedup Time per
Step
        1 466 1
4.66
        2 242 1.93
2.42
        4 138 3.38
1.38
        8 81 5.75
0.81

1.8Gh 2proc 193
1.93

Cheers
Ian

Dr Ian R Gould
Senior Lecturer Biological and Biophysical Chemistry
Department of Chemistry
Imperial College London
Exhibition Road
London
SW7 2AZ
Telephone (+44) 207-594-5809
Fax (+44) 207-594-5809
http://www.ch.ic.ac.uk/gould