Hello all.
I'm using openmpi-1.3 in this example, linux, gcc-4.3.2, configured
with nothing special.
If I run the following simple C code under valgrind, single process, I
get some errors about reading and writing already-freed memory:
---
#include
#include
int
On Wed, Feb 18, 2009 at 02:24:03PM -0700, Ralph Castain wrote:
> Hi Rob
>
> Guess I'll display my own ignorance here:
>
>>> MPI_File_open( MPI_COMM_WORLD, "foo.txt",
>>>MPI_MODE_CREATE | MPI_MODE_WRONLY,
>>>MPI_INFO_NULL, );
>
>
> Since the file was opened with
On Fri, Oct 31, 2008 at 11:19:39AM -0400, Antonio Molins wrote:
> Hi again,
>
> The problem in a nutshell: it looks like, when I use
> MPI_Type_create_darray with an argument array_of_gsizes where
> array_of_gsizes[0]>array_of_gsizes[1], the datatype returned goes
> through MPI_Type_commit()
On Thu, Oct 23, 2008 at 12:41:45AM -0200, Davi Vercillo C. Garcia (ダヴィ) wrote:
> Hi,
>
> I'm trying to run a code using OpenMPI and I'm getting this error:
>
> ADIOI_GEN_DELETE (line 22): **io No such file or directory
>
> I don't know why this occurs, I only know this happens when I use more
>
On Sat, Aug 16, 2008 at 08:05:14AM -0400, Jeff Squyres wrote:
> On Aug 13, 2008, at 7:06 PM, Yvan Fournier wrote:
>
>> I seem to have encountered a bug in MPI-IO, in which
>> MPI_File_get_position_shared hangs when called by multiple processes
>> in
>> a communicator. It can be illustrated by
On Wed, Jul 23, 2008 at 09:47:56AM -0400, Robert Kubrick wrote:
> HDF5 supports parallel I/O through MPI-I/O. I've never used it, but I
> think the API is easier than direct MPI-I/O, maybe even easier than raw
> read/writes given its support for hierarchal objects and metadata.
In addition to
On Wed, Jul 23, 2008 at 02:24:03PM +0200, Gabriele Fatigati wrote:
> >You could always effect your own parallel IO (e.g., use MPI sends and
> receives to coordinate parallel reads and writes), but >why? It's already
> done in the MPI-IO implementation.
>
> Just a moment: you're saying that i can
On Thu, May 29, 2008 at 04:48:49PM -0300, Davi Vercillo C. Garcia wrote:
> > Oh, I see you want to use ordered i/o in your application. PVFS
> > doesn't support that mode. However, since you know how much data each
> > process wants to write, a combination of MPI_Scan (to compute each
> >
On Thu, May 29, 2008 at 04:24:18PM -0300, 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
>
On Fri, Nov 02, 2007 at 12:18:54PM +0100, Oleg Morajko wrote:
> Is there any standard way of attaching/retrieving attributes to MPI_Request
> object?
>
> Eg. Typically there are dynamic user data created when starting the
> asynchronous operation and freed when it completes. It would be
On Fri, Sep 14, 2007 at 02:31:51PM -0400, Jeff Squyres wrote:
> Ok. Maybe we'll just make a hard-coded string somewhere "ROMIO from
> MPICH2 vABC, on AA/BB/" or somesuch. That'll at least give some
> indication of what version you've got.
That sort-of reminds me: ROMIO (well, all of
On Fri, Sep 14, 2007 at 02:16:46PM -0400, Jeff Squyres wrote:
> Rob -- is there a public constant/symbol somewhere where we can
> access some form of ROMIO's version number? If so, we can also make
> that query-able via ompi_info.
There really isn't. We used to have a VERSION variable in
On Fri, Sep 07, 2007 at 10:18:55AM -0400, Brock Palen wrote:
> Is there a way to find out which ADIO options romio was built with?
not easily. You can use 'nm' and look at the symbols :>
> Also does OpenMPI's romio come with pvfs2 support included? What
> about Luster or GPFS.
OpenMPI has
On Tue, Jul 10, 2007 at 04:36:01PM +, jody wrote:
> Error: Unsupported datatype passed to ADIOI_Count_contiguous_blocks
> [aim-nano_02:9] MPI_ABORT invoked on rank 0 in communicator
> MPI_COMM_WORLD with errorcode 1
Hi Jody:
OpenMPI uses an old version of ROMIO. You get this error
On Mon, Jul 02, 2007 at 12:49:27PM -0500, Adams, Samuel D Contr AFRL/HEDR wrote:
> Anyway, so if anyone can tell me how I should configure my NFS server,
> or OpenMPI to make ROMIO work properly, I would appreciate it.
Well, as Jeff said, the only safe way to run NFS servers for ROMIO is
by
On Tue, Jan 30, 2007 at 04:55:09PM -0500, Ivan de Jesus Deras Tabora wrote:
> Then I find all the references to the MPI_Type_create_subarray and
> create a little program just to test that part of the code, the code I
> created is:
...
> After running this little program using mpirun, it raises
On Tue, Jan 09, 2007 at 02:53:24PM -0700, Tom Lund wrote:
> Rob,
>Thank you for your informative reply. I had no luck finding the
> external32 data representation in any of several mpi implementations and
> thus I do need to devise an alternative strategy. Do you know of a good
>
On Mon, Jan 08, 2007 at 02:32:14PM -0700, Tom Lund wrote:
> Rainer,
>Thank you for taking time to reply to my querry. Do I understand
> correctly that external32 data representation for i/o is not
> implemented? I am puzzled since the MPI-2 standard clearly indicates
> the existence of
On Mon, Aug 14, 2006 at 10:57:34AM -0400, Brock Palen wrote:
> We will be evaluating pvfs2 (www.pvfs.org) in the future. Is their
> any special considerations to take to get romio support with openmpi
> with pvfs2 ?
Hi
Since I wrote the ad_pvfs2 driver for ROMIO, and spend a lot of time
on
On Tue, Jul 11, 2006 at 12:14:51PM -0400, Abhishek Agarwal wrote:
> Hello,
>
> Is there a way of providing a specific port number in MPI_Info when using a
> MPI_Open_port command so that clients know which port number to connect.
The other replies have covered this pretty well but if you are
Hello
In playing around with process management routines, I found another
issue. This one might very well be operator error, or something
implementation specific.
I've got two processes (a and b), linked with openmpi, but started
independently (no mpiexec).
- A starts up and calls MPI_Init
-
Hi
I've got a bit of an odd bug here. I've been playing around with MPI
process management routines and I notied the following behavior with
openmpi-1.0.1:
Two processes (a and b), linked with ompi, but started independently
(no mpiexec, just started the programs directly).
- a and b: call
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