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Re: GPULib on my 64-bit WinXP machine [message #63155 is a reply to message #63052]

Tue, 28 October 2008 19:23

Vince Hradil
Messages: 574
Registered: December 1999

Senior Member

On Oct 28, 8:58 am, "Kenneth P. Bowman" <k-bow...@null.edu> wrote:
> In article <MPG.23702f206ddb6fc998a...@news.giganews.com>,
> David Fanning <n...@dfanning.com> wrote:
>
>> b_...@hotmail.com writes:
>
>>> I also see that the GTX200 series supports limited double precision
>>> operations, which might be another trump card.
>
>> The point was made at the User's Group meeting that almost
>> all of the double precision stuff, on any processor, is much
>> slower than floating point operations. The suggestion was
>> made to keep everything in floating values if at all possible.
>
>> Cheers,
>
>> David
>
> Do GPUs do IEEE arithmetic (single precision)?
>
> Ken Bowman

I believe that is what Peter Messmer said at the user meeting. Of
course, we're talking specific the CUDA tools on the NVIDIA cards.

More details at: http://en.wikipedia.org/wiki/CUDA

including this "limitation"
Various deviations from the IEEE 754 standard. Denormals and
signalling NaNs are not supported; only two IEEE rounding modes are
supported (chop and round-to-nearest even), and those are specified on
a per-instruction basis rather than in a control word (whether this is
a limitation is arguable); and the precision of division/square root
is slightly lower than single precision.

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[Message index]

		GPULib on my 64-bit WinXP machine By: Vince Hradil on Thu, 23 October 2008 09:11
		Re: GPULib on my 64-bit WinXP machine By: David Fanning on Mon, 27 October 2008 20:04
		Re: GPULib on my 64-bit WinXP machine By: Kenneth P. Bowman on Tue, 28 October 2008 06:58
		Re: GPULib on my 64-bit WinXP machine By: R.Bauer on Thu, 30 October 2008 03:25
		Re: GPULib on my 64-bit WinXP machine By: Vince Hradil on Tue, 28 October 2008 19:23
		Re: GPULib on my 64-bit WinXP machine By: Kenneth P. Bowman on Wed, 29 October 2008 15:16
		Re: GPULib on my 64-bit WinXP machine By: David Fanning on Wed, 29 October 2008 21:57
		Re: GPULib on my MacBook Pro By: Brian Larsen on Mon, 03 November 2008 15:41
		Re: GPULib on my MacBook Pro By: Marshall Perrin on Sat, 08 November 2008 16:39
		Re: GPULib on my 64-bit WinXP machine By: b_gom on Fri, 07 November 2008 15:30

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