Re: [Starpu-devel] Temporary buffer initialization

[Xavier Lacoste <xavier.lacoste@inria.fr>]

Le 17 avr. 2014 à 11:51, Samuel Thibault <samuel.thibault@ens-lyon.org> a 
écrit :

> Hello,
> 
> Xavier Lacoste, le Wed 16 Apr 2014 14:59:10 +0200, a écrit :
>> I want to have a temporary buffer, allocated by starpu, and initialized (to
>> zero).
>> Some task will add values in it afterward and then it will be send to an 
>> other
>> process for a remote task.
>> These local tasks can be executed in any order.
> 
> Well, this looks like a reduction, won't STARPU_REDUX work for you?

Yes it's a reduction but where only part of the datum is touch in each task. 
So i didn't want all CPUs to perform an addition on the whole buffer when I 
know which part will be touch. And I don't want a buffer to be allocated per 
worker.

> 
> Samuel