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<div class="moz-cite-prefix">Hi,<br>
<br>
Yes, MAGMA's API is not exactly the same. There are a few
additional arguments in the functions related to number of GPU
etc. So it cannot be directly linked instead of LAPACK.<br>
<br>
Hacking SLEPc/PETSc code seems to be the easier way to go. But I
can't find the exact place where the LAPACK functions are called.<br>
<br>
Thanks,<br>
Harshad<br>
<br>
On 06/20/2013 04:49 PM, Teranishi, Keita wrote:<br>
</div>
<blockquote cite="mid:CDE8B83C.2D9F8%25knteran@sandia.gov"
type="cite">
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<div>Hi,</div>
<div><br>
</div>
<div>As far as I know, Magma's API us not exactly the same as
the original LAPACK. You may need to hack either Magma's
Fortran API or internal SLEPC/PETSc source.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>
<div>
<div>---------------------------------------------</div>
<div>Keita Teranishi</div>
</div>
<div>R&D Principal Staff Member </div>
<div>Sandia National Laboratories</div>
<div>Livermore, CA 94551</div>
</div>
</div>
</div>
<div><br>
</div>
<span id="OLK_SRC_BODY_SECTION">
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<span style="font-weight:bold">From: </span>Matthew Knepley
<<a moz-do-not-send="true" href="mailto:knepley@gmail.com">knepley@gmail.com</a>><br>
<span style="font-weight:bold">Date: </span>Thursday, June
20, 2013 1:42 PM<br>
<span style="font-weight:bold">To: </span>Harshad
Sahasrabudhe <<a moz-do-not-send="true"
href="mailto:hsahasra@purdue.edu">hsahasra@purdue.edu</a>><br>
<span style="font-weight:bold">Cc: </span>"<a
moz-do-not-send="true" href="mailto:petsc-users@mcs.anl.gov">petsc-users@mcs.anl.gov</a>"
<<a moz-do-not-send="true"
href="mailto:petsc-users@mcs.anl.gov">petsc-users@mcs.anl.gov</a>><br>
<span style="font-weight:bold">Subject: </span>[EXTERNAL] Re:
[petsc-users] Using MAGMA subroutines instead of LAPACK in
SLEPc<br>
</div>
<div><br>
</div>
<div>
<div>
<div dir="ltr">On Thu, Jun 20, 2013 at 10:24 PM, Harshad
Sahasrabudhe <span dir="ltr">
<<a moz-do-not-send="true"
href="mailto:hsahasra@purdue.edu" target="_blank">hsahasra@purdue.edu</a>></span>
wrote:<br>
<div class="gmail_extra">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
I'm trying to run the SLEPc Eigensolver on a machine
with CPUs & GPUs. I found that a package called
MAGMA implements LAPACK functions on heterogeneous
systems (CPU + GPU). MAGMA has functions very
similar to LAPACK so that we can go and replace a
call to a LAPACK function with a call to a MAGMA
function.<br>
<br>
Now my question is, where can I apply such a hack
inside SLEPc/PETSc so that the Eigensolver in SLEPc
actually uses MAGMA functions instead of LAPACK
functions? I'm using the PETSc 3.3-p6 and SLEPc
3.3-p3 versions.<br>
<br>
Any help would be greatly appreciated!<br>
</blockquote>
<div><br>
</div>
<div style="">You need to do this in PETSc configure.
Use --with-f-blas-lapack-lib=[<MAGMA libs>].
We have never tried this, so I don't</div>
<div style="">know if they obey the entire interface.</div>
<div style=""><br>
</div>
<div style=""> Thanks</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Thanks and Regards,<br>
Harshad<br>
</blockquote>
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<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 </div>
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</blockquote>
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