Re: [Starpu-devel] Problem running CUDA task

[Samuel Thibault <samuel.thibault@ens-lyon.org>]

Miguel Palhas, le Wed 05 Jun 2013 15:16:16 +0100, a écrit :
> This is an old question so i'll have to check if i'm thinking this right, 
> but i
> believe the problem was due to the machine i use having 2 GPU's, one of 
> which
> only supports an older computational capability. half the times, the kernel 
> was
> being sent to the secondary GPU which didn't support the compiled kernel
> correctly, and probably issued an error.

Oh, indeed.

> setting the STARPU_NCUDA=1 environment variable solved the problem

Or better, you can use the .can_execute hook to tell StarPU more
precisely which device can execute which kernel.

Samuel