Search found 3 matches

by Magma-Martin
Mon Jul 23, 2018 10:20 am
Forum: User discussion
Topic: Options for a fast PCG-solve? (currently slower than CPU)
Replies: 1
Views: 765

Options for a fast PCG-solve? (currently slower than CPU)

Hi, I wanted to use MAGMA to speed up a sparse preconditioned conjugate gradient solver. However, my first tries result in a slower solve than the CPU-Version using Eigen. Probably, I am doing something wrong and have forgotten to set a flag or sth like that. Here is my test function: #include <cuda...
by Magma-Martin
Thu Jul 12, 2018 4:52 am
Forum: User discussion
Topic: Magma Example gives wrong results
Replies: 3
Views: 923

Re: Magma Example gives wrong results

Dear Hartwig, I found a workaround using libopenblas from the ubuntu packages instead of MKL. Now, the examples run properly. Thanks for your fast reply. Thanks, Martin Regarding ginkgo: I need a fast Sparse Conjugate Gradient implementation, handling multiple right hand sides for the same sparse ma...
by Magma-Martin
Tue Jul 10, 2018 11:43 am
Forum: User discussion
Topic: Magma Example gives wrong results
Replies: 3
Views: 923

Magma Example gives wrong results

Hi, First of all I'd like to thank you for your great work developing MAGMA. I just finished installing MAGMA and compiled the examples without any warnings or errors. But when I run example_sparse, I get just zeros in the result Vector. I tried to change the copy in the end from dx to db to see if ...