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Re: point_lun is slow [message #17436 is a reply to message #17430]

Wed, 27 October 1999 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

George McCabe (george.mccabe@gsfc.nasa.gov) writes:

> reading from a data file at regularly spaced byte locations, 2 bytes at
> a time using point_lun - my program is abnormally slow. i don't have
> enough experience to guess whether the poor performance is inherent to
> point_lun & readu approach or if there are options which are affecting
> execution adversely.
>
> i'ld appreciate any thoughts on the topic which might lead to a
> solution.

Can you give us some idea about why in the world you
are doing this!? :-)

There is probably an easier (and MUCH faster) way
if I had some idea what you were trying to do.

Cheers,

David

P.S. You aren't doing this in a loop are you? :-)

--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: point_lun is slow By: George McCabe on Wed, 27 October 1999 00:00
		Re: point_lun is slow By: Craig Markwardt on Wed, 27 October 1999 00:00
		Re: point_lun is slow By: George McCabe on Wed, 27 October 1999 00:00
		Re: point_lun is slow By: davidf on Wed, 27 October 1999 00:00

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