Re: [Starpu-devel] Failed assert in copy_driver.c

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

Hello,

Xavier Lacoste, le Mon 20 Oct 2014 11:37:50 +0200, a écrit :
> I'm trying to use MPI together with GPU on curie from CCRT using StarPU 1.2.

Which revision is it precisely?

> On some of my runs I got this error : 
> oops in copy_data_1_to_1_generic (datawizard/copy_driver.c:200)... 4: 
> unspecified launch failure 
> 
> Do you have any advice to avoid/fix that ?

Mmm, CUDA doesn't seem helpful as to what it doesn't like...  Perhaps
there are too many transfers at the same time, you can try to reduce
that in src/datawizard/data_request.c's MAX_PENDING_REQUESTS_PER_NODE
and MAX_PENDING_PREFETCH_REQUESTS_PER_NODE.

Samuel