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

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

Xavier Lacoste, le Tue 21 Oct 2014 15:06:40 +0200, a écrit :
> oops in copy_data_1_to_1_generic (datawizard/copy_driver.c:211)... 4: 
> unspecified launch failure 

Ok. So since changing the number of requests doesn't fix things, CUDA is
probably not overwhelmed with too many requests.  Is your application
filling GPU memory a lot?  Perhaps there is a race between a data
transfer and a buffer deallocation, is there a way I could run the
program myself to debug things with gdb at ease?

> Moreover, 1.2 gives more FLOPS than 1.1 on my application (which is a good 
> evolution :D). 

How much more?  Are you using the STARPU_CUDA_ASYNC flag BTW?

Samuel