comp.lang.idl-pvwave archive: archive » GPULib on my 64-bit WinXP machine

Home » Public Forums » archive » GPULib on my 64-bit WinXP machine

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: GPULib on my 64-bit WinXP machine [message #63482 is a reply to message #63052]

Fri, 07 November 2008 15:30

b_gom
Messages: 105
Registered: April 2003

Senior Member

OK, I've run some tests on a Core2 Extreme 3 GHz system (Q6850
processor) with 8 GB ram running WinXP 64-bit, against a GeForce GTX
280 video card (~240 pipelines, 1GB RAM). Running the 'bench.pro'
routine included with the GPUlib package, I get the following:

% Compiled module: BENCH.
0.756607 0.756607 1.19352 0.206724 0.0188206
0.756607
0.756607 0.756607 1.19352 0.206724 0.0188206
0.756607
N iter = 50
CPU Time = 2.4840000
GPU Time = 0.016000032
Speedup = 155.24968

This seems impressive, but the bench routine is highly artificial; it
just runs the gpuLGamma function repeatedly on a static input array.
If I include the time to load the array to GPU memory and read it out
after each iteration, the speedup drops to a factor of ~12.

For the other test programs, which have more realistic problems, the
speedup ranges from 10 to 100 times.

At any rate, assuming the PC has a fast bus and memory, it appears
that for appropriate types of calculations, you are much better off
buying a $500 video card then spending the premium for multiple or
faster CPUs. Once the bugs get worked out of the library (memory
management is a serious limitation), this should be an extremely
useful package.

Brad

On Oct 23, 9:11 am, Vince Hradil <vincehra...@gmail.com> wrote:
> I just wanted to share with the group that I got theGPULib[http://www.txcorp.com/technologies/GPULib/] to run on my 64-bit Windows XP
> machine with the new NVidia Quadro FX 5600 graphics card (1.5Gb frame
> buffer [http://www.nvidia.com/object/quadro_fx_5600_4600.html]). Many
> thanks to Peter Messmer at Tech-X for his help getting the correct
> executable.
>
> The results are impressive. I ran all the "demos" and the difference
> is about 21-24 X! I can't wait to try to do some "real" work using
> this.
>
> The CPU on this machine is a Dual Quad-core Intel Xeon (X5482 @
> 3.2GHz), and it has 64Gb RAM, so it's not too shabby itself ;^)
>
> Here's the log from running "bench.pro":
>
> IDL> dlm_load, 'gpulib'
> % Loaded DLM:GPULIB.
> 0.756607 0.756607 1.19352 0.206724 0.0188206
> 0.756607
> 0.756607 0.756607 1.19352 0.206724 0.0188206
> 0.756607
> N iter = 50
> CPU Time = 0.64100003
> GPU Time = 0.031000137
> Speedup = 20.677329
> IDL> print, !version
> { x86_64 Win32 Windows Microsoft Windows 7.0 Oct 25 2007 64
> 64}
>
> Vincehttp://vincehradil.wordpress.com/

Report message to a moderator

[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

Previous Topic:	IDL and Ubuntu 8.10 (Intrepid Ibex)
Next Topic:	CREDIT CARD SERVISES

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 06:17:39 PDT 2025

Total time taken to generate the page: 0.87743 seconds