[gmx-users] parallel problem

David spoel at xray.bmc.uu.se
Wed Sep 3 22:30:01 CEST 2003

On Wed, 2003-09-03 at 22:16, Osmany Guirola Cruz wrote:
> This is not the first time that i make the same question, how should i do gromacs work well whith lam in my linux cluster , a simulation in one machine is shorter than two machines , my last steep was compile the lammpi source whith the option  tcp-short=524288 (512kb) and nothing  happens . 
I'll just assume you have single processor machines coupled by tcp/ip
network, is that correct?

Is it 10 Mbit/s, 100 Mbit/s or better?

Do you have a switch between the machines or a hub?

How large is your system to simulate?

Did you try to reproduce the gromacs benchmarks?

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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