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Re: Using "the IDL way" and it's still not fast enough [message #83693]

Wed, 27 March 2013 20:40

chris_torrence@NOSPAM is currently offline

chris_torrence@NOSPAM
Messages: 528
Registered: March 2007

Senior Member

On Wednesday, March 27, 2013 4:49:43 PM UTC-6, Edward Hyer wrote:
> On Wednesday, March 27, 2013 8:14:45 AM UTC-7, Jeremy Bailin wrote:
>
>> Are you just using REBIN to expand dimensions, or are you actually
>
>> expanding/shrinking one of the dimensions by an integer number? If the
>
>> former, are you using /SAMPLE?
>
>
>
> Thanks for the tip! I had never seen that keyword before. We set it up using /SAMPLE, and it got faster, but unfortunately only by about a 5% speedup on the REBIN calls.
>
>
>
> --Edward H.

Just another quick tip: If you are allocating your arrays beforehand, don't forget to use the /NOZERO keyword so IDL doesn't bother to fill in your array with all zeroes (unless of course you are relying on that behavior!). It won't be a huge speedup, but it might help a bit.

-Chris
ExelisVIS

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[Message index]

		Re: Using "the IDL way" and it's still not fast enough By: chris_torrence@NOSPAM on Wed, 27 March 2013 20:40
		Re: Using "the IDL way" and it's still not fast enough By: MarioIncandenza on Wed, 27 March 2013 15:49
		Re: Using "the IDL way" and it's still not fast enough By: MarioIncandenza on Wed, 27 March 2013 12:19
		Re: Using "the IDL way" and it's still not fast enough By: Craig Markwardt on Wed, 27 March 2013 09:56
		Re: Using "the IDL way" and it's still not fast enough By: MarioIncandenza on Wed, 27 March 2013 09:14
		Re: Using "the IDL way" and it's still not fast enough By: Jeremy Bailin on Wed, 27 March 2013 08:14
		Re: Using "the IDL way" and it's still not fast enough By: Kenneth Bowman on Wed, 27 March 2013 07:42
		Re: Using "the IDL way" and it's still not fast enough By: lecacheux.alain on Wed, 27 March 2013 07:15
		Re: Using "the IDL way" and it's still not fast enough By: Brian Daniel on Wed, 27 March 2013 06:52

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