[gmx-users] Re: scaling issues in GROMACS

[Erik Lindahl]

Hi,

> How do you turn on shared memory use for dual xeons ?
> Sasidhar

Under Linux, LAM-MPI should detect it automatically unless you 
explicitly disabled it when compiling (the RPM packages support it).

There is nothing you have to do if it is enabled - LAM will check if 
two processes are on the same node and use shared memory communication 
if possible.

Cheers,

Erik