appens with a much faster
MPI_File_write_at_all.
We wrote this up in our 2005 shared memory for shared file pointers
paper, even though this approach doesn't need RMA shared memory.
==rob
Thanks,
Beichuan
-Original Message-
From: users [mailto:users-boun...@open-mpi.org] On Behalf Of Rob
-boun...@open-mpi.org] On Behalf Of Rob Latham
Sent: Thursday, September 18, 2014 08:49
To: us...@open-mpi.org
Subject: Re: [OMPI users] File locking in ADIO, OpenMPI 1.6.4
On 09/17/2014 05:46 PM, Beichuan Yan wrote:
Hi Rob,
As you pointed out in April that there are many cases that could
arous
and
the actual I/O happens with a much faster MPI_File_write_at_all.
We wrote this up in our 2005 shared memory for shared file pointers paper, even
though this approach doesn't need RMA shared memory.
==rob
> Thanks,
> Beichuan
>
> -Original Message-
> From: user
h this approach doesn't need RMA shared memory.
==rob
Thanks,
Beichuan
-Original Message-
From: users [mailto:users-boun...@open-mpi.org] On Behalf Of Rob Latham
Sent: Monday, April 14, 2014 14:24
To: Open MPI Users
Subject: Re: [OMPI users] File locking in ADIO, OpenMPI 1.6.4
-2 parallel IO?
Thanks,
Beichuan
-Original Message-
From: users [mailto:users-boun...@open-mpi.org] On Behalf Of Rob Latham
Sent: Monday, April 14, 2014 14:24
To: Open MPI Users
Subject: Re: [OMPI users] File locking in ADIO, OpenMPI 1.6.4
On 04/08/2014 05:49 PM, Daniel Milroy wrote:
> He
: Open MPI Users
Subject: Re: [OMPI users] File locking in ADIO, OpenMPI 1.6.4
Hi Rob,
The applications of the two users in question are different; I haven¹t looked
through much of either code. I can respond to your highlighted situations in
sequence:
>- everywhere in NFS. If you have a Lus
Hi Rob,
The applications of the two users in question are different; I haven¹t
looked through much of either code. I can respond to your highlighted
situations in sequence:
>- everywhere in NFS. If you have a Lustre file system exported to some
>clients as NFS, you'll get NFS (er, that might no
On 04/08/2014 05:49 PM, Daniel Milroy wrote:
Hello,
The file system in question is indeed Lustre, and mounting with flock
isn’t possible in our environment. I recommended the following changes
to the users’ code:
Hi. I'm the ROMIO guy, though I do rely on the community to help me
keep the
Subject: Re: [OMPI users] File locking in ADIO, OpenMPI 1.6.4
Sorry for the delay in replying.
Can you try upgrading to Open MPI 1.8, which was released last week? We
refreshed the version of ROMIO that is included in OMPI 1.8 vs. 1.6.
On Apr 8, 2014, at 6:49 PM, Daniel Milroy wrote:
> He
Sorry for the delay in replying.
Can you try upgrading to Open MPI 1.8, which was released last week? We
refreshed the version of ROMIO that is included in OMPI 1.8 vs. 1.6.
On Apr 8, 2014, at 6:49 PM, Daniel Milroy wrote:
> Hello,
>
> Recently a couple of our users have experienced diffic
Hello,
Recently a couple of our users have experienced difficulties with compute jobs
failing with OpenMPI 1.6.4 compiled against GCC 4.7.2, with the nodes running
kernel 2.6.32-279.5.2.el6.x86_64. The error is:
File locking failed in ADIOI_Set_lock(fd 7,cmd F_SETLKW/7,type F_WRLCK/1,whence
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