I ran a 20ps simulation of a system of 20000 atoms on an AMD opteron 250
cluster with 8 processors, I used amber8 and pmemd for the simulation. I
found some strange results:
proc time(min)
2 31
3 29
4 20
5 23
6 24
7 20
8 21
4 processors gives the optimum, it seems to be independent of how I
adress the processors. So for 5 processors 1-2-3-4-5 or 1-2-3-4-7 gives
the same results, always on for processors there is an optimum. Anyone
who experienced this scaling problem?
kind regards,
servaas michielssens
-----------------------------------------------------------------------
The AMBER Mail Reflector
To post, send mail to amber.scripps.edu
To unsubscribe, send "unsubscribe amber" to majordomo.scripps.edu
Received on Sun Dec 09 2007 - 06:07:13 PST
