Search found 58 matches

by jeremiahpalmer
Wed May 23, 2012 12:08 pm
Forum: User discussion
Topic: Using MAGMA with CUDA/PGI
Replies: 7
Views: 6413

Re: Using MAGMA with CUDA/PGI

This post that I submitted yesterday might help with the seg fault:

viewtopic.php?f=2&t=486
by jeremiahpalmer
Tue May 22, 2012 12:40 pm
Forum: User discussion
Topic: Memory error in zgetrf_gpu
Replies: 3
Views: 2266

Memory error in zgetrf_gpu

Hello! I was running magma_zgetrf_gpu (from magma_zgesv_gpu) and found a memory error. I am calling the routine magma_zgetrf_gpu with n=m=1024. In line 107, nb is set to 32. In line 108, s is set to 32. Then, in line 219, we have lapackf77_zgetrf( &rows, &nb0, work, &lddwork, ipiv+s*nb, &iinfo); The...
by jeremiahpalmer
Mon May 21, 2012 1:03 pm
Forum: User discussion
Topic: Problem with testing_zgesv
Replies: 12
Views: 8753

Re: Problem with testing_zgesv

Your suggestion worked! I replace icc with gcc and recompiled. testing_zgesv, testing_zgemm, etc. all behave themselves.

Thanks!
-Jeremiah
by jeremiahpalmer
Thu May 17, 2012 12:26 pm
Forum: User discussion
Topic: Problem with testing_zgesv
Replies: 12
Views: 8753

Re: Problem with testing_zgesv

Any ideas? I downloaded magma 1.2 and ran testing_zgemm as is, and I got this output: CUBLAS error: memory mapping error (11) in magma_zgetmatrix at zset_get.cpp:113 CUBLAS error: memory mapping error (11) in magma_zsetmatrix at zset_get.cpp:98 CUBLAS error: memory mapping error (11) in magma_zgetma...
by jeremiahpalmer
Tue May 08, 2012 3:38 pm
Forum: User discussion
Topic: Problem with testing_zgesv
Replies: 12
Views: 8753

Re: Problem with testing_zgesv

Some details: In testing_zgemm, I commented out the call to magma_zgemm and forced it to run only one matrix size (M=N=K=1024). I used cudaGetLastError before the call to cublasZgemm and get no error. I used it after cublasZgemm and I get "unspecified launch failure". Hardware Details: 2 x Intel X56...
by jeremiahpalmer
Fri May 04, 2012 6:51 pm
Forum: User discussion
Topic: Problem with testing_zgesv
Replies: 12
Views: 8753

Re: Problem with testing_zgesv

Here is what I get for testing_zgetrf -M 1000 -N 1000 testing_zgetrf -M 1000 -N 1000 M N CPU GFlop/s GPU GFlop/s ||PA-LU||/(||A||*N) ============================================================ 1000 1000 49.97 126.31 2.345270e-01 Here is what I get for testing_zgetrf -M 2000 -N 2000 testing_zgetrf -...
by jeremiahpalmer
Thu May 03, 2012 2:54 pm
Forum: User discussion
Topic: Problem with testing_zgesv
Replies: 12
Views: 8753

Re: Problem with testing_zgesv

Thanks for investigating my issue, Mark. Here is what I get for testing_zgetrf: Usage: testing_zgetrf -M 1024 -N 1024 M N CPU GFlop/s GPU GFlop/s ||PA-LU||/(||A||*N) ============================================================ 1024 1024 56.82 157.43 2.347769e-01 2048 2048 96.70 130870.32 2.500543e-0...
by jeremiahpalmer
Thu May 03, 2012 12:00 pm
Forum: User discussion
Topic: Problem with testing_zgesv
Replies: 12
Views: 8753

Problem with testing_zgesv

I ran testing_zgesv and got this output: device 0: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 1: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 2: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 3: Tesla C2075, 1147.0 MHz clo...
by jeremiahpalmer
Thu Apr 26, 2012 11:55 am
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

Does anyone know if a future version of Magma will be thread safe?