Search found 283 matches

by Stan Tomov
Tue Feb 26, 2013 8:01 pm
Forum: User discussion
Topic: testing_*blas core
Replies: 1
Views: 1407

Re: testing_*blas core

Hello, I can confirm there is an issue. There is a bug related to the error checking, and in particular, the size of a pivot array piv in err = magma_malloc_cpu( (void**) &piv, N*sizeof(magma_int_t) ); assert( err == 0 ); should have been Ak, as in err = magma_malloc_cpu( (void**) &piv, Ak*sizeof(ma...
by Stan Tomov
Tue Feb 26, 2013 7:31 pm
Forum: User discussion
Topic: Variable stack allocations, Microsoft Visual Studio 2010
Replies: 4
Views: 3826

Re: Variable stack allocations, Microsoft Visual Studio 2010

Thanks for pointing this out! We will fix it for the next release.
by Stan Tomov
Tue Feb 26, 2013 7:28 pm
Forum: User discussion
Topic: Testing bugs
Replies: 1
Views: 1564

Re: Testing bugs

Thanks for pointing this out. We had other user requests and feedback on the testers and we redesigned them. They are more uniform looking now and support -h option to print help. Different options give the user a way to specify specific sizes, ranges, error checking, etc. This will be available wit...
by Stan Tomov
Tue Feb 26, 2013 7:14 pm
Forum: User discussion
Topic: Deploying apps which use Magma
Replies: 3
Views: 1894

Re: Deploying apps which use Magma

The ultimate goal is that the user would specify what hardware to be used (while the default would be to use everything available). This is not possible right now but we keep adding functionality that would make it possible, e.g., we released clMAGMA for enabling MAGMA use on any accelerator through...
by Stan Tomov
Tue Oct 23, 2012 2:43 am
Forum: User discussion
Topic: Installation error with MAGMA1.2.1
Replies: 1
Views: 2212

Re: Installation error with MAGMA1.2.1

Try linking with these libraries

Code: Select all

LIB       = -lmkl_gf_lp64 -lmkl_intel_thread -lmkl_core -liomp5 -lpthread -lcublas -lm -fopenmp
or consult with the MKL's link adviser at http://software.intel.com/sites/products/mkl/
Stan
by Stan Tomov
Thu Sep 13, 2012 10:25 am
Forum: User discussion
Topic: Problem with testing_zgesv
Replies: 12
Views: 10424

Re: Problem with testing_zgesv

Upon further investigation we found that the problem is with Intel's compiler. This CUDA release note summarizes the issue: There is a known bug in ICC with respect to passing 16-byte aligned types by value to GCC-built code such as the CUDA Toolkit libraries (e.g., CUBLAS). At this time, passing a ...
by Stan Tomov
Wed Sep 05, 2012 11:02 am
Forum: User discussion
Topic: wishlist
Replies: 4
Views: 3231

Re: wishlist

This routine becomes more compute intensive when eigenvectors are needed. In that case most of the flops are in gemm and this is what is GPU accelerated.
Stan
by Stan Tomov
Tue Jul 17, 2012 6:22 pm
Forum: User discussion
Topic: FADDS_GEMM and FMULS_GEMM in flops.h do same operation
Replies: 2
Views: 2554

Re: FADDS_GEMM and FMULS_GEMM in flops.h do same operation

Hi,
This is just for convenience in maintaining the codes in different precisions. We keep one version in double complex and generate all the rest with a python script. Besides this there is no other reason to have two macros.
Stan
by Stan Tomov
Tue Jul 17, 2012 6:05 pm
Forum: User discussion
Topic: Possible bug in magmablas_dswap [MAGMA 1.1.0 and 1.2*]
Replies: 5
Views: 7119

Re: Possible bug in magmablas_dswap [MAGMA 1.1.0 and 1.2*]

Hello,
I think the bug is actually in the example file, in particular, you have used expressions like sizeof(x1), which in your case is 32 (4 doubles), instead of sizeof(x[0]) or just sizeof(double).
Stan
by Stan Tomov
Tue Jul 17, 2012 1:52 pm
Forum: User discussion
Topic: something about zgetrf_gpu
Replies: 1
Views: 1465

Re: something about zgetrf_gpu

Hello, Most probably there is problem with your CPU libraries (BLAS and LAPACK). To test this, you can run for example ./testing_zgetrf -M 20 -N 20 which will execute entirely on the CPU. If the error is not of order 1e-16 the result will be wrong. For example, on one of our systems I get [tomov@cum...