Search found 4 matches

by vivi_
Fri Dec 07, 2018 8:02 am
Forum: User discussion
Topic: Why is magma_ssyevd_gpu so slow?
Replies: 1
Views: 555

Why is magma_ssyevd_gpu so slow?

Hi everybody. I have run the code that you can find in paragraph 4.7.13 of the following manual: https://developer.nvidia.com/sites/default/files/akamai/cuda/files/Misc/mygpu.pdf I just erased the lapack parts. I launched it 5 times just to understand the order of magnitude of the elapsed time, and ...
by vivi_
Wed Dec 05, 2018 12:40 pm
Forum: User discussion
Topic: Random Butterfly Transformations
Replies: 4
Views: 771

Re: Random Butterfly Transformations

mgates3 wrote:From scanning the code, it looks like depth=1, a single random butterfly is applied.
-mark
just another question, how do I get to access magma functions code?
by vivi_
Wed Dec 05, 2018 11:19 am
Forum: User discussion
Topic: Random Butterfly Transformations
Replies: 4
Views: 771

Re: Random Butterfly Transformations

Thanks!
by vivi_
Wed Dec 05, 2018 6:29 am
Forum: User discussion
Topic: Random Butterfly Transformations
Replies: 4
Views: 771

Random Butterfly Transformations

Hi everybody. Just a very simple question. Functions magma_*gerbt_gpu use random butterfly transformations to solve linear systems Ax=b. Following the definition of "depth" of a RBT (see e.g. https://hal.inria.fr/inria-00593306/document), what is the depth of the RBTs implemented in gerbt functions?...