[Pw_forum] Howto DIY a small cluster with Infiniband for QE simulation?
filippo.spiga at quantum-espresso.org
Sun Dec 18 20:04:07 CET 2016
On Dec 17, 2016, at 3:33 PM, Rolly Ng <rollyng at gmail.com> wrote:
> (1) how to configure the infiniband network on OpenSuSE 13.2?
I am afraid you need to google this, the pw_forum is not a mailing-list to help people solve Linux issues.
> (2) how to compile QE to make use of the infiniband hardware?
If IB drivers and OFED/MOFED are correcty installed, the MPI library will detect it and run MPI traffic on Infiniband. If not, it will use ethernet (assuming there is ethernet)
> (3) how to compile and run GPU (pw-gpu.x) across the cluster?
It is like run the normal PW, you enable the parallel mode ("--enable-parallel") and use MPI run. Keep MPI ranks same numbers as GPU.
Filippo SPIGA ~ Quantum ESPRESSO Foundation ~ http://www.quantum-espresso.org
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