Search found 58 matches

by jeremiahpalmer
Fri Sep 07, 2012 5:23 pm
Forum: User discussion
Topic: ModularSolution not working?
Replies: 3
Views: 1417

Re: ModularSolution not working?

This question is probably for the "other" magma software: http://magma.maths.usyd.edu.au/magma/
by jeremiahpalmer
Mon Aug 06, 2012 12:52 pm
Forum: User discussion
Topic: magma_zgetri_gpu segfaults in OpenMP parallel for
Replies: 14
Views: 10303

Re: magma_zgetri_gpu segfaults in OpenMP parallel for

Any time frame for when all of the functions will use CUBLAS v2, as Mark mentioned?
Not yet. We're aware of the issue, but it will take a while to upgrade all the functions to use CUBLAS v2, which has better stream support for thread safety.
-mark
by jeremiahpalmer
Wed Aug 01, 2012 4:35 pm
Forum: User discussion
Topic: let me allocate gpu work space, please!
Replies: 0
Views: 1368

let me allocate gpu work space, please!

Hello!

I have some rather tight memory management needs for my gpu usage. Is there a way that the magma routines could be passed gpu work spaces instead of the magma routines allocating the temp spaces? Specifically, I am looking at zgetrf_gpu.cpp.

Thanks,
Jeremiah
by jeremiahpalmer
Tue Jun 19, 2012 5:01 pm
Forum: User discussion
Topic: magma_zgetri_gpu segfaults in OpenMP parallel for
Replies: 14
Views: 10303

Re: magma_zgetri_gpu segfaults in OpenMP parallel for

I applied the fix Stan mentioned in http://icl.cs.utk.edu/magma/forum/viewtopic.php?f=2&t=520 : Also, there was a bug in file interface_cuda/alloc.cpp. Function magma_free_host should free memory with cudaFreeHost (instead of using cudaFree). Now, my OpenMP parallel calls to magma_zgesv seem to be w...
by jeremiahpalmer
Tue Jun 12, 2012 12:23 pm
Forum: User discussion
Topic: magma_zgetri_gpu segfaults in OpenMP parallel for
Replies: 14
Views: 10303

Re: magma_zgetri_gpu segfaults in OpenMP parallel for

Thanks for the update. I'd be happy to help in alpha or beta testing, if needed. :)
by jeremiahpalmer
Tue Jun 12, 2012 12:09 pm
Forum: User discussion
Topic: magma_zgetri_gpu segfaults in OpenMP parallel for
Replies: 14
Views: 10303

Re: magma_zgetri_gpu segfaults in OpenMP parallel for

Any news on a parallel safe MAGMA?
by jeremiahpalmer
Tue Jun 12, 2012 12:08 pm
Forum: User discussion
Topic: Memory error in zgetrf_gpu
Replies: 3
Views: 2266

Re: Memory error in zgetrf_gpu

Any news on this error?

Thanks,
Jeremiah
by jeremiahpalmer
Thu May 31, 2012 10:56 am
Forum: User discussion
Topic: MAGMA svn
Replies: 2
Views: 1492

Re: MAGMA svn

I would be glad to participate in John's idea.
by jeremiahpalmer
Sun May 27, 2012 5:56 pm
Forum: User discussion
Topic: Memory error in zgetrf_gpu
Replies: 3
Views: 2266

Re: Memory error in zgetrf_gpu

I ran magma_zgesv_gpu with the size 1024. The execution exited quite ungracefully. I traced the memory error using valgrind and found that it was failing at that particular line in magma_zgetrf_gpu. I printed the integer data s and nb just before lapackf77_zgetrf was called. It printed that both s a...
by jeremiahpalmer
Wed May 23, 2012 4:09 pm
Forum: User discussion
Topic: magma_zgetri_gpu segfaults in OpenMP parallel for
Replies: 14
Views: 10303

Re: magma_zgetri_gpu segfaults in OpenMP parallel for

I'm finding that magma_zgetrf_gpu fails in an OpenMP region even when there's only 1 thread set. Is this everyone's experience as well? (Or just with the other magma routines?)

BTW, the routine fails in calling cudaFree in magma_free_host.