Search found 279 matches

by Stan Tomov
Tue May 21, 2013 10:02 am
Forum: User discussion
Topic: Segmentation fault in magma_dsetmatrix
Replies: 11
Views: 7869

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: 7869

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: 9983

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: 2358

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: 7869

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: 3841

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: 1578

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: 4105

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
by Stan Tomov
Sat Mar 02, 2013 3:05 pm
Forum: User discussion
Topic: problem in installing magma 3.0 on ubuntu 12.10 64bit
Replies: 6
Views: 4218

Re: problem in installing magma 3.0 on ubuntu 12.10 64bit

Good, so it looks like the libraries were created. You can ignore that last command for now. I'll double check with the other developers, but it looks like the last command in the Makefile for install should be cat $(MAGMA_DIR)/lib/pkgconfig/magma.pc.in | \ ... instead of cat $(MAGMA_DIR)/lib/pkgcon...
by Stan Tomov
Thu Feb 28, 2013 4:08 pm
Forum: User discussion
Topic: NaN bug in MAGMAblas dgemm
Replies: 2
Views: 2554

Re: NaN bug in MAGMAblas dgemm

Hi Eric, Thanks for the report. Indeed we had a wrong assumption that certain out of bound values will be multiplied by 0 and therefore would be irrelevant for the result - which resulted in this bug when out of bound values are nan, and then nans propagated in the result. The other precisions have ...