Segmentation fault in magma_dsetmatrix

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Re: Segmentation fault in magma_dsetmatrix

Postby delauxs » Sun May 26, 2013 10:40 pm

Thanks a lot Stan.

I have known done a clean install of Ubuntu 11.04 (the distribution recommended by AMD).
I have tried several combinations of AMD-APP (2.7 and 2.8) and Catalyst drivers (12.4, 12.10 and 13.4).
AMD-APP 2.8 (the latest version) is the one responsible for dgemm not working. It works for SDK2.7 and Catalyst 13.4 or 12.10.

SDK2.7 only allows to get 2/3 of the power of the GPU to be used.
Regardless of the versions of SDK or Catalyst drivers, my sample program still gives a segmentation fault at the same place.
delauxs
 
Posts: 9
Joined: Mon May 06, 2013 11:30 pm

Re: Segmentation fault in magma_dsetmatrix

Postby delauxs » Tue Jun 04, 2013 1:11 am

Well, this is not a very satisfying solution but my initial problem seems to be the sum of two problems :
- AMD's SDK 2.8 is creating problems. So for now going down to SDK 2.7 is the way to go.
- I seem to have a problem with clmagma's clAmdblas wrapper. If I call the clAmdBlas functions directly without using magma_blas, then everything works fine. This is most likely a problem on my end, but bipassing magma_blas seems to solve my problem for now.
delauxs
 
Posts: 9
Joined: Mon May 06, 2013 11:30 pm

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