[PVFS2-users] pvfs2 + mpich2
suzu0037 at aem.umn.edu
Mon Mar 7 17:30:13 EST 2005
Thank you, Rob! It makes sense now. I appreciate it very much. Now I
have another question which may or may not be relevant to PVFS2 itself.
When I reconfigure MPICH2 for PVFS2, I got the following link error
/h/suzu0037/Local/MPI/mpich2/lib/libmpich.so: undefined reference to
I still can't figure this out where libmpich try to refer to this name.
I obtained the newest mpich2, i.e., mpich2-1.0 and I presumed that romio
is already patched.
Robert Latham wrote:
>On Mon, Mar 07, 2005 at 03:45:33PM -0600, Ryuta Suzuki wrote:
>>I found out servers didn't start out on other nodes at all. My
>>installation is without root access. It's still not clear to me what to
>>do with local mount point and data storage for each node. I set both of
>>them on NFS mounted directories. I might misunderstand what PVFS2 is
>>supposed to do.
>>So my goal is to set PVFS2 to enable MPI-IO (ROMIO) capability over
>>network connected workstations so that I can run and debug my code
>>without logging into crowded cluster system. I very very much appreciate
>>your help. Thank you very much.
>(please do not forget to copy pvfs2-users )
>I run pvfs2 as a non-root user all the time on our clusters here.
>The 'local mount point' is a way to distinguish between multiple pvfs2
>file systems on the same server. If you don't have the kernel module
>loaded, you can make up anything you want for it. "/mnt/pvfs2" is a
>The "data storage" can just be any directory on a local file system.
>Our workstations here have a large partition mounted on /sandbox, and
>I usually make /sandbox/robl/pvfs2-storage my storage directory. You
>can use /tmp, but watch out for cron jobs that delete files overnight
>or upon node reboot. It should definitly not be NFS, since you
>won't get good performance at all with many servers running.
>Does all that make sense?
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