Re: [SIESTA-L] Parallelization

2010-06-24 Por tôpico Eduardo Anglada
Hi Rob, If I were you at the beginning of the project I would run several tests increasing the number of processors. You have to pay attention not only on the number of orbitals per core but also on the number of grid points per core (obtainning this number can be tricky, in some versions of si

[SIESTA-L] Parallelization

2010-06-23 Por tôpico Koch, Robert J
Hey everyone, Quick question. Is there some lower limit of orbitals per processor where it becomes more efficient to use _fewer_ processors? For example, I assume for 12 orbitals its more efficient to run on 6 nodes rather than 12, but in general how far can this be taken? I realize that the