node connection requirement

[jianshu93]

Dear mpiBWA team,

Is there a requirement for node communication model, e.g., intel omipath/infband et.al., mentioned many places to compile it, or it will compile no matter what the connection model is.

Thanks,

Jianshu

[fredjarlier]

Hi Jianshu

In theory you could compile mpiBWA wherever you want, thanks to openMPI portability. Even on your laptop as long as you have compiled and installed openmpi. But runtime is another story... OpenMPI is intended to run with low latency networks and parallel file system (at least for mpiBWA and fellows). There is no requirements in term of topology or fabric components, normaly they all support MPI and the only way to know is to test.
From past experiences don't run MPI on NFS it will not work. Also I have not tested TCP networks, so I don't know if it scales.

What do you have in mind?

best

fred