On 08/20/2014 02:57 PM, glen english wrote:
For those that know real DSPs, they'll recognize that the Cortex M4
(stm32 4...) is NOT a real DSP. It has some handy instructions, they
call DSP, sure. But start throwing it alot of filtering tasks and
you'll run out of cycles.
David is very much a fan of doing things on conventional processors. And
I can't really say he's wrong, yes development time is the greatest
expense and thus you should use what is easiest to develop upon.
We used to do a lot of specialized imaging hardware at Pixar, and we
made memory systems that were as efficient to access in Y or rectangular
areas as they were in X. We were always aware that Intel would make a
processor to beat our raw processing speed/n /years from when we
released a product. And dynamic memory speeds have improved as well. So,
I tell my kid that his phone is as powerful as our entire NYIT computer
graphics lab in /__///'81. Beating the render farms at Pixar is more
difficult, but the day will come.
I remember at one point telling Ed Catmull (head of Pixar and now CTO of
Disney) that people would edit movies in /home/ computers, and he didn't
believe it.
However, I am seeing that it's not quite time to abandon specialized
hardware. Maybe a few more years.
Thanks
Bruce
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