Hi Erik,
thanks for your quick reply. I'm not so worried about the error, it
actually seems to be an MPI issue, even though MPI worked fine on the
smaller cluster. Hopefully it isn't a pain to fix.
What I really want to know is the difference between the standard
lapacke and intel's mkl one. Is the only difference between the two, if
all I used before was functions defined in lapacke.h, to replace this
with mkl_lapacke.h? The code seems to run fine with only this change,
but I remember seeing somewhere standard lapack function calls but with
mkl__ appended at the front. I want to know if I should also modify
these function calls as well to make proper use of the mkl. The
mkl_lapacke.h header file itself doesn't seem very insightful.
I can't seem to find much useful documentation on this through google...
Cheers,
Chris
On 03/24/2018 04:50 PM, Erik Schnetter wrote:
Chris
Can you say what is actually going wrong? We need to see an error
message or similar to help out.
-erik
On Sat, Mar 24, 2018 at 03:38 Chris Stevens <[email protected]
<mailto:[email protected]>> wrote:
Hi everyone,
I have just ported my code from a local cluster to larger one
which uses intel mkl and wanted to clarify the changes I've made
are the correct ones wrt the lapacke library:
-- In the local cluster, I had the option
LAPACK_LIBS = lapack lapacke in my .ini file
and used #include "lapacke.h" in the code.
-- In the bigger cluster, I now have to use intel mkl, and I have
the following options in my .cfg
LAPACK_DIR =
/apps/compilers/intel/parallel_studio_xe_2016/mkl/lib/intel64
LAPACK_LIBS = -mkl
which will only compile my code if I replace #include "lapacke.h"
with #include "mkl_lapacke.h".
Question: Is this the right way to generalise to mkl lapacke?
Problem: The code runs fine on the local cluster, but breaks (not
obvious where) on the larger one with the above changes. The
lapacke functions seem to work OK at a glance, but seeing as this
is the only thing that has changed this may still be the culprit.
Question: Do I perhaps need to change the lapacke function calls
also? The mkl_lapacke.h header file doesn't seem to give much
insight... I think I remember seeing somewhere calls replaced
something like
LAPACKE_dgels -> MKL_LAPACKE_dgels
Thanks!
Chris
--
Dr Chris Stevens
Claude Leon Postdoctoral Fellow
Department of Mathematics
Rhodes University
Room 5
Ph: +27 46 603 8932
Web: www.chrisdoesmaths.com <http://www.chrisdoesmaths.com>
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--
Erik Schnetter <[email protected] <mailto:[email protected]>>
http://www.perimeterinstitute.ca/personal/eschnetter/
--
Dr Chris Stevens
Claude Leon Postdoctoral Fellow
Department of Mathematics
Rhodes University
Room 5
Ph: +27 46 603 8932
Web: www.chrisdoesmaths.com <http://www.chrisdoesmaths.com>
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