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AMBER Archive (2000)Subject: Re: amber on AMDs cluster
From: Cezary Czaplewski (czarek_at_scheraga2.chem.cornell.edu)
On Wed, 14 Jun 2000, Xavier Deupi wrote:
> So our questions are:
I am using MPI on all parallel platforms :SGI, Cray T3E, IBM SP2 and
> 2) Using MPI, what are the usual scaling rates, going from 1 to 2 nodes?
see below
> 3) Anyone has tested this king of computation on AMD K6 ?
I think you mean AMD K7 ? I didn't try it in parallel, but serial job is
4) Anything against the following command line of mpi :
I am using MPICH not LAM-MPI so I cannot help you with this.
5) Any suggestions ???
I think you should try netpipe or similar benchmarks to test your network.
Sometime ago I did PROWAT benchmark using 3 PII 350MHz connected by
PII 350 512kb L2 100MHz FSB
1 352 99 0
I have also data for celeron 433 MHz cluster :
Celeron 433 MHz 128kb L2 cache(66MHz FSB)
1 263 100 0.0
Recently I repeat PROWAT benchmark on our new dual PIII coppermine 650 MHz
PIII coppermine 650 MHz 256kb L2 cache(100MHz FSB)
time time
1 1 137 100 0.0
As you can see the scaling is not perfect but it is not so bad,
A few more details : PROWAT is Amber 4.1 benchmark: plastocyanin in water
-fomit-frame-pointer -malign-double -fcaller-saves -fno-f2c
czarek
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