MAGMA Forum

Hi, I've been trying to use the magma_dtrsm routine, but it doesn't work as documented here: http://icl.cs.utk.edu/projectsfiles/magma/doxygen/group__magma__trsm.html#ga36b2b66d52f384db19cf256cc5e8a4c2. It expects a magma_queue_t, but when I pass one, I get errors telling me that I'm passing too man...

Hi Ahmad, Just pinging back about this issue. The original issue has been resolved, but I find a minor inconsistency between the returned values of the getrf and getrf_batched. In getrf, if the input is singular, the diagonal of the returned matrix has 0s, whereas in getrf_batched, if the inputs is ...

Hi, I found out that the spotrf_batched routine fails for batch size > 524280 and dpotrf_batched routine fails for batch size > 262140. I confirmed this issue using the test suite and the following commands: ./testing_spotrf_batched --batch 524281 -n 2 --check --matrix rand_dominant and ./testing_dp...

Hi Ahmad,

Thank you for fixing this. I can confirm that it reports the correct error code now.

Best,

Vishwak

Hi Ahmad, Thank you for the message. The specific case where I see that the error code is not sent back correctly is when you have a constant matrix. I verified that this is not working correctly by modifying the tests for magma_dpotrf_batched. When I initialize the matrix with 1 at every entry, the...

Hi, I'm using MAGMA to perform Cholesky decomposition on batches of matrices. While passing the batched routine matrices that are not positive definite, it doesn't seem to be passing back the errors as expected. However, the single batch version of this routine (d/spotrf_gpu) does it correctly for i...

Thank you for looking into this. I can verify that the bug has been fixed in the latest master.

Hello, I seem to have discovered a memory leak in the potrf_batched routines when running the tests for the same routine. The GPU memory used increases with the number of iterations, which is uncharacteristic of other tests like getri, getrf and potrs. Could someone take a look at this? Thank you in...

Hi Ahmad, Thank you for the prompt response. Unfortunately, this doesn't seem to resolve the issue, and now the non-pivoting variant is also not working as expected with respect to sending back errors. Furthermore, I think I might have found that the pivot information is also not sent back in the pi...

Hi, Sorry about the ambiguous title. I filed an issue a month ago about (d/s)getri_outofplace_batched not being able to handle more than 65535 matrices in a batch. This is the link to the issue: https://bitbucket.org/icl/magma/issues/10/getri_outofplace_batched-fails-when I will present the details ...