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Re: IDL with multiple processors [message #13706 is a reply to message #13701]

Fri, 04 December 1998 00:00

thompson
Messages: 584
Registered: August 1991

Senior Member

steinhh@ulrik.uio.no (Stein Vidar Hagfors Haugan) writes:

> In article <7479pd$j5i$1@agate.berkeley.edu>
> korpela@islay.ssl.berkeley.edu (Eric J. Korpela) writes:

>> IDL is pretty much single threaded. If you've got two processors, it's up
>> to you to use 'em. You'd be suprised what you can do if you try.....
>> This works under sunos... (you need to write your own kill proceedure,
>> though. That's not too hard.)
>>
>> pid=call_external("/usr/lib/libc.so.1.9","_fork") ; your libc name may vary
>> if pid then begin
>> do some processing
>> kill,pid
>> endif else begin
>> do some other processing
>> dummy=call_external("/usr/lib/libc.so.1.9","_wait")
>> endelse
>>

> Hmmm... dreaming of a "PIDL" (Parallel IDL).... How about
> something like a few extra "directives":

(rest deleted)

I always thought of IDL as an ideal candidate for parallelization, without any
need for modified code. After all, one can apply an operation to an entire
array of data in one call, i.e. if one says

A = B + C

and B and C are arrays, then this is equivalent to N separate operations on
each of the elements of the arrays. Why couldn't this be split up over several
processors?

William Thompson

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[Message index]

		Re: IDL with multiple processors By: David Schmidt on Mon, 07 December 1998 00:00
		Re: IDL with multiple processors By: steinhh on Sat, 05 December 1998 00:00
		Re: IDL with multiple processors By: steinhh on Sat, 05 December 1998 00:00
		Re: IDL with multiple processors By: korpela on Fri, 04 December 1998 00:00
		Re: IDL with multiple processors By: thompson on Fri, 04 December 1998 00:00
		Re: IDL with multiple processors By: steinhh on Fri, 04 December 1998 00:00
		Re: IDL with multiple processors By: korpela on Fri, 04 December 1998 00:00

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