Thanks, Satish, fixes are now in next.
Best regards,
Karli
On 07/27/2017 09:52 AM, Satish Balay wrote:
There are a bunch of nightlybuild regressions with the GPU stuff - perhaps you
can take a look.
http://ftp.mcs.anl.gov/pub/petsc/nightlylogs/archive/2017/07/27/examples_next_arch-cuda-double_es.log
Satish
On Thu, 27 Jul 2017, Karl Rupp wrote:
Hi Jose,
We have detected another problem. Could you take care of it?
MatDuplicate() does not work for MATSEQAIJCUSPARSE (probably also for
MATMPIAIJCUSPARSE).
The attached example creates a matrix and duplicates it. There are two
cases:
1) With a diagonal matrix it fails on GPU because MatDuplicate() did not
copy the CUDA-specific data.
$ ./ex_duplicate -diag -mat_type aijcusparse -vec_type cuda
2) With a fully dense matrix (or any matrix where I-node routines are used),
it does not fail but operations are done on CPU instead of GPU (because it
changes the pointers to MatMult_SeqAIJ_Inode etc).
$ ./ex_duplicate -mat_type aijcusparse -vec_type cuda
ah, thanks for finding this and for providing code that reproduces the
problem. I'll take care of it.
Best regards,
Karli
El 26 jul 2017, a las 21:12, Karl Rupp <r...@iue.tuwien.ac.at> escribió:
Hi Jose,
With pull request #719 we have finished a set of fixes to VECCUDA stuff.
With these changes it is now possible to run many tests in SLEPc's
testsuite on GPU (AIJCUSPARSE+VECCUDA). These tests will be included in
the nightly tests from now on.
great!
However, PETSc nightly tests related to VECCUDA are not being run. The
reason is that arch-cuda-double.py and arch-cuda-double.py have
--with-cusp=1 and this option disables VECCUDA code. CUSP tests are
separate from VECCUDA tests.
As you may remember, I want to get rid of VECCUSP (and if possible also
MATAIJCUSP), because the functionality is now provided natively through
the CUDA SDK (VECCUDA, MATAIJCUSPARSE). Only the preconditioners from
CUSP, most notably PCSACUSP, will stay. This way we can then easily switch
over all the tests to VECCUDA.
Another thing is that not all VECCUDA tests pass, because of a pending
issue related to MatMultTranspose_MPIAIJCUSPARSE. This was reported last
year:
https://bitbucket.org/petsc/petsc/pull-requests/490/gpu-regression-tests
Alright, thanks for the reminder. Let me get this fixed. :-)
Best regards,
Karli
