Hi all,

I am a little bit confused of PVFS vs. NFS. Could any of you explain it for
me please?

Suppose I have a system using NFS. Now I want to use PVFS via ROMIO
interface, so I install MPICH and PVFS.
My questions are

- How do the system now it should use PVFS instead of NFS?
- Do I need to install both MPICH and PVFS? What about "accessing to PVFS
files by using ROMIO interface"?
What happen if I only install MPICH (will it use PVFS or NFS?)

Thanks in advance.
Huong
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