Re: [OMPI users] ROMIO bug reading darrays

On 8 May 2014 16:59, Rob Latham wrote: > > Richard: may I add this test case to ROMIO's test suite? I'm always on > the hunt for small self-contained tests. > Please do. I'm glad it's being so useful - it seems to be hitting a surprising amount of bugs of different origins.

Re: [OMPI users] ROMIO bug reading darrays

On 7 May 2014 16:25, Jeff Squyres (jsquyres) wrote: > > "Periodically". > > Hopefully, the fix will be small and we can just pull that one fix down to > OMPI. Okay, thanks for letting me know Jeff. Richard

Re: [OMPI users] ROMIO bug reading darrays

On 7 May 2014 17:48, Rob Latham wrote: > > Looks like I fixed that late last year. A slew of ">31 bit transfers" > fixes went into the MPICH-3.1 release. Slurping those changes, which are > individually small (using some _x versions of type-inquiry routines here, > some

Re: [OMPI users] ROMIO bug reading darrays

-mpi.org/community/lists/users/2012/07/19762.php). Have those been pulled into OpenMPI? I've been staying clear of ROMIO for a while (in favour of OMPIO), to avoid those issues. Thanks, Richard On 7 May 2014 12:36, Rob Latham <r...@mcs.anl.gov> wrote: > > > On 05/05/2014 09:20 P

[OMPI users] ROMIO bug reading darrays

Hello, I think I've come across a bug when using ROMIO to read in a 2D distributed array. I've attached a test case to this email. In the testcase I first initialise an array of 25 doubles (which will be a 5x5 grid), then I create a datatype representing a 5x5 matrix distributed in 3x3 blocks

Re: [OMPI users] Extent of Distributed Array Type?

In this case, however, I > suspect it didn't happen because we didn't hear back that the patch fixed > the problem and was therefore correct :-/ > > > On Apr 10, 2014, at 8:02 AM, Richard Shaw <jr...@cita.utoronto.ca> wrote: > > Okay. Thanks for having a look Ralph! >

Re: [OMPI users] Extent of Distributed Array Type?

I'll see if it can be applied to 1.8.1. These > things don't automatically go across - it requires that someone file a > request to move it - and I think this commit came into the trunk after we > branched for the 1.7 series. > > > On Apr 9, 2014, at 12:05 PM, Richard Shaw <

Re: [OMPI users] Extent of Distributed Array Type?

in the SVN trunk, but hasn't made it into any of the intervening releases (neither stables 1.6.2-, 1.8; nor feature releases 1.7 onwards). Will this end up in the 1.9 series? Richard On 24 July 2012 19:02, Richard Shaw <jr...@cita.utoronto.ca> wrote: > Thanks George, I'm glad it wasn't just

Re: [OMPI users] 2 GB limitation of MPI_File_write_all

Hi Rayson, Just seen this. In the end we've worked around it, by creating successive views of the file that are all else than 2GB and then offsetting them to eventually read in everything. It's a bit of a pain to keep track of, but it works at the moment. I was intending on following your

Re: [OMPI users] Can't read more than 2^31 bytes with MPI_File_read, regardless of type?

On Tuesday, 7 August, 2012 at 12:21 PM, Rob Latham wrote: > Hi. Known problem in the ROMIO MPI-IO implementation (which OpenMPI > uses). Been on my list of "things to fix" for a while. Ok, thanks. I'm glad it's not just us. Is there a timescale for this being fixed? Because if it's a long term

Re: [OMPI users] Extent of Distributed Array Type?

Thanks George, I'm glad it wasn't just me being crazy. I'll try and test that one soon. Cheers, Richard On Tuesday, 24 July, 2012 at 6:28 PM, George Bosilca wrote: > Richard, > > Thanks for identifying this issue and for the short example. I can confirm > your original understanding was

Re: [OMPI users] Extent of Distributed Array Type?

, size=40, extent=80, lb=0 Rank 1, size=40, extent=88, lb=0 Can anyone else confirm this? Thanks Richard On Sunday, 15 July, 2012 at 6:21 PM, Richard Shaw wrote: > Hello, > > I'm getting thoroughly confused trying to work out what is the correct extent > of a block-cyclic distr

[OMPI users] Extent of Distributed Array Type?

Hello, I'm getting thoroughly confused trying to work out what is the correct extent of a block-cyclic distributed array type (created with MPI_Type_create_darray), and I'm hoping someone can clarify it for me. My expectation is that calling MPI_Get_extent on this type should return the size