On Fri, Nov 2, 2012 at 6:24 PM, Fande Kong <span dir="ltr"><<a href="mailto:fd.kong@siat.ac.cn" target="_blank">fd.kong@siat.ac.cn</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I got it. You still didn't fix the bugs that I encountered a few months ago. All current MPI implementations couldn't support the function MPI_Accumulate or others well with one-sided communication when data is large. Thus, I have to hack your code (PetscSF) to use point-point communications. But I find it's not so easy.</blockquote>
<div><br></div><div>Can't you just use MPICH since it does not have bugs? What is the point of using a buggy MPI?</div><div><br></div><div> Thanks,</div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div><br></div><div>don't you want to change to use point-point?</div><div><div class="h5"><div><br><div class="gmail_quote">On Fri, Nov 2, 2012 at 4:04 PM, Jed Brown <span dir="ltr"><<a href="mailto:jedbrown@mcs.anl.gov" target="_blank">jedbrown@mcs.anl.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">The current implementation uses one-sided because that was a natural. I need a solid day to implement without one-sided. As stated in the issue I posted, this is necessary because Open MPI data types are broken.<div>
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<br><br><div class="gmail_quote">On Fri, Nov 2, 2012 at 5:01 PM, Fande Kong <span dir="ltr"><<a href="mailto:fd.kong@siat.ac.cn" target="_blank">fd.kong@siat.ac.cn</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
did you remove horrible one-side communication? and did you make some tests with using 64-bit integers?<div><div><br><br><div class="gmail_quote">On Fri, Nov 2, 2012 at 3:50 PM, Jed Brown <span dir="ltr"><<a href="mailto:jedbrown@mcs.anl.gov" target="_blank">jedbrown@mcs.anl.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I am using PetscSF for this. You would need petsc-dev and the current implementation requires an MPI with non-broken data types.<div>
<br></div><div><a href="https://bitbucket.org/petsc/petsc-dev/issue/9/implement-petscsf-without-one-sided" target="_blank">https://bitbucket.org/petsc/petsc-dev/issue/9/implement-petscsf-without-one-sided</a><br>
</div><div><br></div><div>Here are some (dated) notes about the communication model. <a href="http://59A2.org/files/StarForest.pdf" target="_blank">http://59A2.org/files/StarForest.pdf</a><br></div><div><div>
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On Fri, Nov 2, 2012 at 4:41 PM, Fande Kong <span dir="ltr"><<a href="mailto:fd.kong@siat.ac.cn" target="_blank">fd.kong@siat.ac.cn</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi all,<div><br></div><div>Are there any functions (objects ) for scattering and gathering 64-bit integers just like VecScatter for PetscScalar? The VecScatter is very useful for managing communication for PetscScalar. But I can't find any functions or objects to do similar things for PetscInt. Any suggestions?</div>
<div><br></div><div><div>Regards,<span><font color="#888888"><br>-- <br><div style="line-height:21px;font-size:14px;font-family:Verdana">Fande Kong</div><div style="line-height:21px;font-size:14px;font-family:Verdana">
ShenZhen Institutes of Advanced Technology</div><div style="line-height:21px;font-size:14px;font-family:Verdana">Chinese Academy of Sciences</div><br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div style="line-height:21px;font-size:14px;font-family:Verdana">Fande Kong</div><div style="line-height:21px;font-size:14px;font-family:Verdana">
ShenZhen Institutes of Advanced Technology</div><div style="line-height:21px;font-size:14px;font-family:Verdana">Chinese Academy of Sciences</div><br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div style="line-height:21px;font-size:14px;font-family:Verdana">Fande Kong</div><div style="line-height:21px;font-size:14px;font-family:Verdana">
ShenZhen Institutes of Advanced Technology</div><div style="line-height:21px;font-size:14px;font-family:Verdana">Chinese Academy of Sciences</div><br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener<br>