Surpris par la ressource système !!!

Citation de manuel de Live 8 :

CHAPITRE 30. RESSOURCES AUDIO ET STRAT…GIES INFORMATIQUES 537

Heureusement, Live prend en charge les systËmes multicoeur et multiprocesseur, permettant
de rÈpartir entre les ressources disponibles la charge de traitement d'ÈlÈments comme les
instruments, les effets et les entrÈes/sorties.

 

ok, voici donc la réponse du support d'Ableton :

"Hi,

Thanks for writing Ableton.

Live distributes work to multiple cores on a per-track basis. That is, a single track will be entirely processed by only one core. For example: imagine a Set that contains a single track containing clips and devices. Live's CPU meter shows 20% usage when this track plays. If your computer has 4 cores, you could duplicate this track 3 times without causing an increase in CPU usage, because each track would use its own core.

Because each core processes in parallel with the others, it is not possible for multicore to work properly on tracks that depend on other tracks for their signals. For example: imagine a player track sending a portion of its signal to a return track. The return track will use the same core as the player track, because it must wait until the player track's signal has been processed. Similar situations occur with tracks that route to other tracks.

On a multicore system, the CPU meter shows the speed of the slowest core (that is, the core that needed to calculate the most.): this 80% CPU Usage test, in fact refers to one single core.

If you still feel not totally sure about it, please try the Live 8 performance Test, which you can find here on our Forum:

https://forum.ableton.com/viewtopic.php?f=1&t=111880

Additionally, here some extra tips for better multicore performance:

- Disable unused sends (via the context-menu), rather than just turning them to -inf.
- When possible, use multiple tracks instead of Racks.
- Minimize inter-track routing, sidechain configurations, etc.
- Avoid too much processing in the Master track. Instead, use insert effects on player tracks when possible.

I hope this will help you out. Should you have more questions, please feel free to get back in touch.

Kind regards,

Massimiliano Pagliara
Ableton Technical Support"

rassurant, mais m'en vais tester ça de ce pas!

OK !