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Alt 03.03.2007, 09:49   #15
Alex_YSSY
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Registriert seit: 30.03.2005
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Zitat:
Original geschrieben von Wolf-Dieter Wahl
@Alex

Hier dazu die Aussage von Phil Taylor, Senior Product Manager für Graphics & Terrain bei Aces :
...
CPU architecture and moving forward.

Aces made its architectural decisions about FSX 2-3 years ago.

It wasn’t clear to me, and I am sure it wasn’t clear to the rest of Aces and many of our readers in 2003 and 2004, that multicore was the future. Since those sorts of design decisions are baked in early, as it became clear in late 2005 and 2006 that the CPU landscape had changed it was just too late to make the major architectural changes required to make our internal architecture more parallel.

We use fibers and threads, but still have serialization issues to work out. Which is why our second core (and beyond) usage is low, on the order of 20%. And the changes required are not trivial changes, like simply shifting thread affinity. The order of operations required for correct rendering and sim behavior and the linkage between subsystems is what it is, and it means that none of our options include simple fixes.

Once you are on the glide path it is a very risky decision to change the architecture underneath the product. For better or worse, we decided to not do that and ship the product.
...
Vielen Dank Dieter!
____________________________________
Schoene Gruesse,

Alex
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