[gmx-developers] Benchmark Results Clarification

[Josh Hursey]

Do you know what core the P III's were using?

Josh Hursey

On Thu, 7 Aug 2003, David wrote:

> On Wed, 2003-08-06 at 23:27, Josh Hursey wrote:
> > I am working with a research group attempting to replicate the
> > (normalized versions) of you results posed on the gromacs site. We are
> > falling short of the ps/day that you have posted.
> >
> > To ensure that we are running a close setup to the environment in which
> > your tests were ran, Could you provide us with some additional information
> > that I could not find on the website.
> >
> > We are running:
> >   Cluster 1:
> >     Dual Pentium III (Katmai) 497 MHz 512 KB L2 Cache
> >     512 MB S-DRAM
> >     100 MB Switched environment
> >     Linux version 2.4.7-10smp
> >     gcc version 2.96
> >     Red Hat Linux 7.1 2.96-98
> >   Cluster 2:
> >     Dual PowerPC G4 7455, altivec supported 999MHz 256K L2 cache
> >     2 MB at 4 GBps
> >     1 GB DDR SDRAM
> >     1 GB switched Environment
> >     Linux version 2.4.20-8d
> >     gcc version 3.2.2
> >     Yellow Dog Linux 3.0 3.2.2-2a
> >
> > 1) What FFTW configuration options were used on the install?
> Nothing special, except the i386 tweaks and single precision
>
> >
> > 2) What Gromacs compiler options were used on the install?
> >
> all default as generated by the configure script
>
>
> > 3) What hardware/networking environment were the benchmarks ran under?
> >
> Different ones, but there are results for 100 Mb/s switched system too
> We used LAM 6.x for MPI where a few extra flags were used for compiling
> -tcp-short-message=500000 -shm-short-message=500000 -usysv
> (check for exact syntax).
>
> > 4) Are the MPI tests ran so that a MPI run with 2 processes are run on one
> > dual processor node or on 2 different nodes?
> >    (e.g.
> >      2 processes = 1 node with 2 processors
> Yes
>
> >      or
> >      2 processes = 2 nodes with 2 processors
> >    )
> >
> > Thank you for your help!
> >
> Furthermore check in the output from your jobs whether the SSE routines
> are used on your Pentium 3.
>
> > Peace,
> >
> > Josh Hursey
> > Earlham College
> >
> > _______________________________________________
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> --
> Groeten, David.
> ________________________________________________________________________
> Dr. David van der Spoel, 	Dept. of Cell and Molecular Biology
> Husargatan 3, Box 596,  	75124 Uppsala, Sweden
> phone:	46 18 471 4205		fax: 46 18 511 755
> spoel at xray.bmc.uu.se	spoel at gromacs.org   http://xray.bmc.uu.se/~spoel
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