That I don't know, we use lustre for this stuff now. And our users
don't use parallel IO, (though I hope to change that).
Sorry can't help more. I would really use 'just' pvfs2 for your IO.
The other reply pointed out you can have both and not use NFS at all
for your IO but leave it mounted is thats what users are expecting.
Brock Palen
www.umich.edu/~brockp
Center for Advanced Computing
bro...@umich.edu
(734)936-1985
On May 29, 2008, at 3:46 PM, Davi Vercillo C. Garcia wrote:
Hi,
I'm already using "noac" option on my /etc/fstab but this error is
still happening. I need to put this in another file ?
On Thu, May 29, 2008 at 4:33 PM, Brock Palen <bro...@umich.edu> wrote:
Well don't run like this. Have PVFS have NFS, don't mix them like
that your
asking for pain, my 2 cents.
I get this error all the time also, you have to disable a large
portion of
the caching that NFS does to make sure that all MPI-IO clients get
true data
on the file they are all trying to access. To make this work
check in your
/etc/fstab and see if you have the 'noac' option. This
is attribute caching, this must be disabled.
On that note PVFS2 is made for doing MPI-IO to multiple hosts
(thus no need
for NFS) because it was made with MPI-IO in mind it should work
out the
box.
Brock Palen
www.umich.edu/~brockp
Center for Advanced Computing
bro...@umich.edu
(734)936-1985
On May 29, 2008, at 3:24 PM, Davi Vercillo C. Garcia wrote:
Hi,
I'm trying to run my program in my environment and some problems are
happening. My environment is based on PVFS2 over NFS (PVFS is mounted
over NFS partition), OpenMPI and Ubuntu. My program uses MPI-IO and
BZ2 development libraries. When I tried to run, a message appears:
File locking failed in ADIOI_Set_lock. If the file system is NFS, you
need to use NFS version 3, ensure that the lockd daemon is running on
all the machines, and mount the directory with the 'noac' option (no
attribute caching).
[campogrande05.dcc.ufrj.br:05005] MPI_ABORT invoked on rank 0 in
communicator MPI_COMM_WORLD with errorcode 1
mpiexec noticed that job rank 1 with PID 5008 on node campogrande04
exited on signal 15 (Terminated).
Why ?!
--
Davi Vercillo Carneiro Garcia
Universidade Federal do Rio de Janeiro
Departamento de Ciência da Computação
DCC-IM/UFRJ - http://www.dcc.ufrj.br
"Good things come to those who... wait." - Debian Project
"A computer is like air conditioning: it becomes useless when you
open
windows." - Linus Torvalds
"Há duas coisas infinitas, o universo e a burrice humana. E eu estou
em dúvida quanto o primeiro." - Albert
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--
Davi Vercillo Carneiro Garcia
Universidade Federal do Rio de Janeiro
Departamento de Ciência da Computação
DCC-IM/UFRJ - http://www.dcc.ufrj.br
"Good things come to those who... wait." - Debian Project
"A computer is like air conditioning: it becomes useless when you open
windows." - Linus Torvalds
"Há duas coisas infinitas, o universo e a burrice humana. E eu estou
em dúvida quanto o primeiro." - Albert Einstein
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