Re: [Starpu-devel] Error - No worker may execute this task

[ASUDE ASUDE <ajitsdeshpande@gmail.com>]

Hello Samuel,
    Progress!  based on your reply. 
After adding in code   .where = STARPU_OPENCL | STARPU_CPU
and configuring with --disable-cuda --enable-opencl, make and executing I get error:
Executing on OpenCL 0 (GeForce GTX 470)

Segmentation fault

So it seems its task is getting scheduled to OpenCL device of GPU, but crashing for some other reason.

Would you suspect that my NVIDIA driver or something related to GPU card could be having problem? Where would you point I start debugging to resolve this?

thanks,
-AD

On Tue, Nov 29, 2011 at 12:14 PM, Samuel Thibault <samuel.thibault@ens-lyon.org> wrote:

ASUDE ASUDE, le Tue 29 Nov 2011 12:09:45 +0000, a écrit :
> #elif __OPENCL__
>               .where = STARPU_OPENCL,
>               .opencl_func = test_opencl_codelet,

STARPU_CPU is missing here to also permit execution on CPUs, which
explains why StarPU would say, when OpenCL is not available, that no
device can execute the task, even the CPU, since the codelet doesn't
include STARPU_CPU.

Now, really, the issue you are having is that neither --disable-cuda nor
export STARPU_NCUDA=0 are set in your environment, you must be doing
something wrong, such as not running make install, or not setting export
STARPU_NCUDA=0 in the same shell before starting your application (or
starpu_machine_display).

Samuel