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

[Xavier Lacoste <xl64100@gmail.com>]

Le 20 oct. 2014 à 12:37, Samuel Thibault <samuel.thibault@ens-lyon.org> a 
écrit :

> 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?
It's revision 13560.
> 
>> 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.
Ok i'll rerun my code with 2/1 instead of 20/10

Thanks
> 
> Samuel
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