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Re: IDLgrVolume [message #33760 is a reply to message #33679]

Tue, 21 January 2003 09:57

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

"David Fanning" wrote
> Sebastian (s@visita2.die.upm.es) writes:
>
>> some figures for a 256^3 volume (MRI) into a 500x500 window:
>>
>> "highest quality" settings:
>> RENDER_STEP=[1,1,1],INTERPOLATE=1,LIGHTING_MODEL=1,TWO_SIDED =1
>>
>> "medium quality" settings:
>> RENDER_STEP=[2,2,5],INTERPOLATE=0,LIGHTING_MODEL=0,TWO_SIDED =0
>>
>> Pentium IV 2.4 GHz, 512MB, W2K, IDL 5.6
>> highest quality: 11-17s
>> medium quality: 0.5-1.0s
>>
>> Pentium III mobile 800 MHz, 256MB, Linux, IDL 5.5
>> highest quality: 35-50s
>> medium quality: 2.0-3.0s
>
> Is this with hardware rendering turned on or off?
> If on, what kind of graphics card are you using?

IDLgrVolume doesn't utilize hardware rendering at all so the type of
graphics hardware and hardware/software switch is mostly irrelevant (only
used when blitting the 2d result to the screen).

As to the original posters question, the hardware that can do the job is the
fastest CPU/RAM combination you can afford. IDLgrVolume can use multiple
CPU's but a look at some older posts suggest that the improvement might not
be worth the investment. Not sure if that is true today.

If you are rooted in x86 land, then the hyperthreading P4's with the
"canterwood" chipset due 2nd quarter '03 would be a good option. AMD's
hammer line of 64 bit procs might be a good choice too but it would be nice
to see some firm numbers on it. If you aren't fixated on the x86
architecture then the please don't kill our Alpha would be a top choice.

-Rick

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[Message index]

		IDLgrVolume By: lyubo on Sat, 18 January 2003 18:56
		Re: IDLgrVolume By: Karl Schultz on Tue, 21 January 2003 23:16
		Re: IDLgrVolume By: Paul Woodford on Tue, 21 January 2003 20:54
		Re: IDLgrVolume By: Paul Woodford on Tue, 21 January 2003 20:54
		Re: IDLgrVolume By: Karl Schultz on Tue, 21 January 2003 15:07
		Re: IDLgrVolume By: Rick Towler on Tue, 21 January 2003 13:11
		Re: IDLgrVolume By: David Fanning on Tue, 21 January 2003 12:32
		Re: IDLgrVolume By: Rick Towler on Tue, 21 January 2003 09:57
		Re: IDLgrVolume By: lyubo on Tue, 21 January 2003 10:44
		Re: IDLgrVolume By: David Fanning on Tue, 21 January 2003 06:47
		Re: IDLgrVolume By: s[1] on Tue, 21 January 2003 02:28

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