Re: Problems with BLCR?

From: Paul H. Hargrove (PHHargrove_at_lbl_dot_gov)
Date: Tue Jul 26 2005 - 16:01:23 PDT

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    Pradeep and Jeff,
       There is no support in current BLCR versions for either POSIX or 
    Linux-native async I/O support.  While this has nothing to do with 
    whatever linker problems Jeff mentioned, it could be the cause of the 
    problems you've been seeing.
       How/when is async I/O used in LAM?  Is there a simple way to disable 
    it via ssi params?
    Pradeep Padala wrote:
    > Hi Paul,
    >    Latest mail from Jeff mentioned this (He is busy with some conference 
    > and may be late in responding)
    > -------- Original Message --------
    > Subject: Re: cr
    > Date: Tue, 26 Jul 2005 06:43:22 -0600
    > From: Jeff Squyres <>
    > To: Pradeep Padala <ppadala_at_eecs_dot_umich_dot_edu>
    > Yes, without libaio parallel processes checkpointed / restarted just
    > fine.
    > I see the problem -- only exists (not  This is
    > why the linker doesn't find it.  Did you remove an RPM yesterday or
    > something?  IIRC, the file is in the libaio-devel RPM...?
    > ----------------------------------
    >     I fixed the aio rpm and I am waiting for him to re-test the mpi 
    > programs. Is linking with aio a problem for blcr?
    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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