Re: OpenMPI and BLCR 0.8.0b2

From: Paul H. Hargrove (PHHargrove_at_lbl_dot_gov)
Date: Sun Dec 07 2008 - 15:31:56 PST

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    It looks as if the current releases of MVAPICH2 and MPICH-V are also both 
    unprepared for the removal of these older interfaces.  So, they will be 
    restored in the next beta.
    
    -Paul
    
    Josh Hursey wrote:
    > Paul,
    > 
    > This patch will definitely be included in the Open MPI v1.3 series. 
    > Depending on when the group decides to release and when I get a chance 
    > to create the patch it may not make it for v1.3.0. Open MPI has a 
    > configure check for cr_request_file, and it 'should' default to 
    > fork/exec cr_checkpoint if it does not find the interface ('should' 
    > meaning that I haven't tested this in a long time, but the code is still 
    > in place). So I believe that 0.8.0 should work fine with Open MPI, if 
    > not slightly non-optimal.
    > 
    > With that in mind I would continue with removing the cr_request_file 
    > interface in 0.8.0 as you had planned and I'll try to get a patch into 
    > the Open MPI v1.3 series as quickly as I can.
    > 
    > Thanks for the offer.
    > 
    > Josh
    > 
    > On Dec 4, 2008, at 3:13 PM, Paul H. Hargrove wrote:
    > 
    >> Josh,
    >>
    >>  I see the trac item lists 1.3 as the Milestone for this fix.  Is it 
    >> realistic to think that this (hopefully small) change to OMPI will 
    >> make it into 1.3?  If not, I can probably resurect the removed APIs 
    >> and delay removal until 0.8.1, though I'd rather not if this can be 
    >> avoided.
    >>
    >> -Paul
    >>
    >> Josh Hursey wrote:
    >>> I responded on the Open MPI mailing list regarding this, but wanted 
    >>> to repost here in case anyone is interested in tracking the progress 
    >>> of this Open MPI C/R bug.
    >>>   http://www.open-mpi.org/community/lists/users/2008/12/7391.php
    >>>
    >>> Thanks for the bug report,
    >>> Josh
    >>>
    >>> On Dec 4, 2008, at 4:39 AM, Matthias Hovestadt wrote:
    >>>
    >>>> Hi!
    >>>>
    >>>> Just for your information: the checkpointing support of
    >>>> OpenMPI makes use of the deprecated function cr_request_file.
    >>>> Since you removed support for these deprecated functions in
    >>>> 0.8.0, the usage of older versions like 0.7.3 is mandatory if
    >>>> if checkpointing OpenMPI jobs.
    >>>>
    >>>>
    >>>> Best,
    >>>> Matthias
    >>>>
    >>>>
    >>>
    >>
    >>
    >> -- 
    >> Paul H. Hargrove                          PHHargrove_at_lbl_dot_gov
    >> Future Technologies Group
    >> HPC Research Department                   Tel: +1-510-495-2352
    >> Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900
    > 
    
    
    -- 
    Paul H. Hargrove                          PHHargrove_at_lbl_dot_gov
    Future Technologies Group
    HPC Research Department                   Tel: +1-510-495-2352
    Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900
    

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