| Re: Why are iTools so slow? [message #41109] |
Fri, 01 October 2004 10:25  |
Rick Towler
Messages: 821
Registered: August 1998
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Senior Member |
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Mark Hadfield wrote:
> For the record, I have a Pentium 4 2.67 GHz machine running Windows 2000
> with an ASUS display adapater using a GeForce4 MX 440 graphics processor
> with 64 MiB RAM. I "upgraded" to this adapter shortly after I got the
> machine and was disappointed with the lack of any improvement in Object
> Graphics speed.
As you found, the Geforce "MX" cards, ummm, stink. I have had great
luck buying mid-level gaming cards in the $200-250US range (latest is
the Geforce FX 5900XT). Check out the reviews on the geeksites
(arstechnica, ace's hardware, anand...) to see how they do in openGL
benchmarks. There's always a number of cards in this price range so
you'll have to look for the value.
-Rick
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| Re: Why are iTools so slow? [message #41116 is a reply to message #41109] |
Thu, 30 September 2004 17:34  |
Mark Hadfield
Messages: 783
Registered: May 1995
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Senior Member |
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David Fanning wrote:
> Marshall Perrin writes:
>
>
>> On my 1.25 GHz 15" Powerbook, it's not nearly that slow.
>> Both isurface and fsc_surface redraw many times per second and
>> are very usable. fsc_surface does feel a bit smoother and faster,
>> but it's more like a factor of 2-3. Certainly not a factor of 20!
>
>
> Could this be a hardware/software issue? My iTool image is
> slower, but not unusable, certainly.
You mean a hardware/software *renderer* issue. Yes. I changed the
default object graphics renderer in File/Preferences from Hardware to
Software, restarted IDL and, voila, the iSurface display is much faster.
For the record, I have a Pentium 4 2.67 GHz machine running Windows 2000
with an ASUS display adapater using a GeForce4 MX 440 graphics processor
with 64 MiB RAM. I "upgraded" to this adapter shortly after I got the
machine and was disappointed with the lack of any improvement in Object
Graphics speed.
I will have a look in the iTools code at the keywords it uses when it
creates and draws to its IDLgrWindow objects and report back if I found
out anything interesting.
--
Mark Hadfield "Ka puwaha te tai nei, Hoea tatou"
m.hadfield@niwa.co.nz
National Institute for Water and Atmospheric Research (NIWA)
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