[gmx-developers] Benchmark Results Clarification
spoel at xray.bmc.uu.se
Thu Aug 7 08:17:29 CEST 2003
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?
> 2 processes = 1 node with 2 processors
> 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.
> Josh Hursey
> Earlham College
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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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