lkml.org 
[lkml]   [2015]   [Apr]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: Interacting with coherent memory on external devices
From
Date
On Wed, 2015-04-22 at 13:17 -0500, Christoph Lameter wrote:
>
> > But again let me stress that application that want to be in control will
> > stay in control. If you want to make the decission yourself about where
> > things should end up then nothing in all we are proposing will preclude
> > you from doing that. Please just think about others people application,
> > not just yours, they are a lot of others thing in the world and they do
> > not want to be as close to the metal as you want to be. We just want to
> > accomodate the largest number of use case.
>
> What I think you want to do is to automatize something that should not be
> automatized and cannot be automatized for performance reasons.

You don't know that.

> Anyone
> wanting performance (and that is the prime reason to use a GPU) would
> switch this off because the latencies are otherwise not controllable and
> those may impact performance severely. There are typically multiple
> parallel strands of executing that must execute with similar performance
> in order to allow a data exchange at defined intervals. That is no longer
> possible if you add variances that come with the "transparency" here.

Stop trying to apply your unique usage model to the entire world :-)

Ben.




\
 
 \ /
  Last update: 2015-04-23 04:41    [W:0.128 / U:0.880 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site