segmentation faults and non-MKL build

[rmchurch]

I'm trying to use MAGMA without MKL, which I saw a post for previously. I changed the make file to point to the directory of my LAPACK and BLAS so's, and changed the LIB variable to not have -lmkl_em64t OR -lguide (put in -llpack).
When running testing_sgetrf_gpu I get the following error:

[rmchurch@cmodws66 testing]$ ./testing_sgetrf_gpu
device 0: Quadro FX 1700, 918.0 MHz clock, 511.3 MB memory

Usage:
testing_sgetrf_gpu -N 1024

!!!! device memory allocation error (d_A)


N CPU GFlop/s GPU GFlop/s ||PA-LU|| / (||A||*N)
==========================================================
Segmentation fault

Is this because of a bad build? I have probably missed something to change/add in the make file, though I have no idea what. Any ideas?

[Stan Tomov]

Hello,
The testing drivers assume memory on the card of size ~1GB and try to allocate memory for matrix of size 10,000 x 10,000. I see you have 511MB. We will change this in the future - to read the card specification and run tests that are according to the card,s memory size. For now you can try smaller problems by giving the size directly, e.g.

Code: Select all

> testing_sgetrf_gpu -N 1024


Hope this was the problem.
Stan

[rmchurch]

Thanks, that was it, I should have just looked at the code.