Re: How long do render callbacks have to execute?
Re: How long do render callbacks have to execute?
- Subject: Re: How long do render callbacks have to execute?
- From: tahome izwah <email@hidden>
- Date: Fri, 19 Aug 2011 10:43:45 +0200
2011/8/19 Brian Willoughby <email@hidden>:
>
> On Aug 18, 2011, at 22:53, tahome izwah wrote:
>>
>> 2011/8/13 Brian Willoughby <email@hidden>:
>>>
>>> In general, a processor cannot carry out any operations in parallel.
>>
>> Not true. That is exactly what SIMD instructions do which are built
>> into all modern CPUs.
>
> SIMD does not carry out multiple operations, it performs the same operation
> on multiple data values. Single Instruction Multiple Data. Have you
> actually written any code using SIMD? How familiar are you with how it
> works?
Very. SIMD instructions carry out the same instruction on multiple
data *in parallel*. This is contrary to your statement that "a
processor cannot carry out any operations in parallel".
As I see it, what you were saying is at best imprecise, but actually
totally wrong, which is my whole point here.
--th
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