Search found 271 matches

by Stan Tomov
Fri May 24, 2013 5:33 pm
Forum: User discussion
Topic: Segmentation fault in magma_dsetmatrix
Replies: 11
Views: 7521

Re: Segmentation fault in magma_dsetmatrix

We have
Ubuntu 12.04.2 LTS
OpenCL 1.2
AMD-APP 1124.2
Driver version 12.10.5 (module loaded - fglrx 12.10.5 [Mar 20 2013] with 1 minors)
clAmdBlas 1.11.314 (also 1.8.286 and 1.8.291)
by Stan Tomov
Tue May 21, 2013 10:19 am
Forum: User discussion
Topic: problem MAGMA-1.2.0 ATLAS-3.10.0 Lapack-3.4.1..help !!!
Replies: 12
Views: 9723

Re: problem MAGMA-1.2.0 ATLAS-3.10.0 Lapack-3.4.1..help !!!

Hi, These undefined routines are supposed to be in lapack. Maybe check to see if they are indeed there, e.g., nm liblapack.a | grep ssyevd If it is not there, probably you have some incomplete version of LAPACK, e.g., something that comes with ATLAS. If it is there, probably just adding -llapack onc...
by Stan Tomov
Tue May 21, 2013 10:02 am
Forum: User discussion
Topic: Segmentation fault in magma_dsetmatrix
Replies: 11
Views: 7521

Re: Segmentation fault in magma_dsetmatrix

Actually we have similar problem on a new system that we just setup. We rely on the clAmdBlas so this is one of the first things that we check when there are problems. On dgemm we also get somehow similar results ./testing_dgemm Initializing clMAGMA runtime ... Usage: testing_dgemm [-NN|NT|TN|TT] [-...
by Stan Tomov
Tue May 21, 2013 1:05 am
Forum: User discussion
Topic: Segmentation fault in magma_dsetmatrix
Replies: 11
Views: 7521

Re: Segmentation fault in magma_dsetmatrix

We are also running on Ubuntu 12.04 (.2 LTS).
uname -a
gives
Linux genesis 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux.
Are the clMAGMA testing routines working, e.g., testing_sgemm?
Stan
by Stan Tomov
Mon May 20, 2013 11:15 pm
Forum: User discussion
Topic: problem MAGMA-1.2.0 ATLAS-3.10.0 Lapack-3.4.1..help !!!
Replies: 12
Views: 9723

Re: problem MAGMA-1.2.0 ATLAS-3.10.0 Lapack-3.4.1..help !!!

Hello,
These functions are from the LAPACK library. LAPACK is a MAGMA dependency and has to be installed or your system and linked.I see you have

Code: Select all

-L/home/ronald/lapack-3.4.1/
but don't have -llapack. Do you have a liblapack.a somewhere in /home/ronald/lapack-3.4.1/?
by Stan Tomov
Mon May 20, 2013 11:06 pm
Forum: User discussion
Topic: Magma 1.3 installation problem
Replies: 1
Views: 2277

Re: Magma 1.3 installation problem

Hello,
The cmake building capabilities are not up to date. Please use the Makefiles as described in README. Please post your make.inc file if you still have problems compiling (and the errors that you get). Thanks.
Stan
by Stan Tomov
Mon May 20, 2013 10:52 pm
Forum: User discussion
Topic: Segmentation fault in magma_dsetmatrix
Replies: 11
Views: 7521

Re: Segmentation fault in magma_dsetmatrix

Hello,
I looked at your code and was wondering if the problem comes from

Code: Select all

magma_device_t device;
...
if ( MAGMA_SUCCESS == magma_get_devices (&device, 2, &num ) )
   ...
Maybe you should have

Code: Select all

magma_device_t device[2];
...
if ( MAGMA_SUCCESS == magma_get_devices (device, 2, &num ) )
   ...
by Stan Tomov
Wed May 15, 2013 11:23 pm
Forum: User discussion
Topic: Possible bug dsyevd_gpu test wrong eigenvectors result
Replies: 4
Views: 3715

Re: Possible bug dsyevd_gpu test wrong eigenvectors result

Hi Luis, I just ran the test and reproduced your result on a K20c. I added a check for the factorization though and for the orthogonality and everything looks fine: test> ./benchmark_cpu -N 2000 Reading input file Read succesful Calculating eigenvalues with MKL Quering space... Solving eigenvalues.....
by Stan Tomov
Wed May 01, 2013 6:00 pm
Forum: User discussion
Topic: magma_dsyevd_gpu performance
Replies: 2
Views: 1475

Re: magma_dsyevd_gpu performance

Hello, It depends on your CPU/GPU configuration and the GPU BLAS used. If I use MAGMA BLAS's dsymv, the results on 16 Sandy Bridge CPU cores @2.6 GHz vs. a K20c GPU (13 x 192 CUDA cores @ 0.7 GHz) would look like this tomov:bunsen ~/trunk/testing> ./testing_dsyevd -l MAGMA 1.3.0 device 0: Tesla K20c...
by Stan Tomov
Wed May 01, 2013 12:00 pm
Forum: User discussion
Topic: MAGMA on ARM
Replies: 4
Views: 3929

Re: MAGMA on ARM

Nick,
I am sure there would be many people interested. We will be interested to include a make.inc.arm file in the magma distribution and add CARMA as one more device supported. Some tuning may be needed, e.g., at first just to tune the block sizes in control/get_nb.cpp.
Stan