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Re: IDL performance and FFTs (was: call external speed) [message #12855 is a reply to message #12854]

Thu, 17 September 1998 00:00

menakkis
Messages: 37
Registered: June 1998

Member

I hope that you folks don't mind me straying from IDL here, but there seems
to be a fair amount of interest in getting FFTs to go as fast as possible. I
saw something on the web the other day that might be of interest to IDL/WinNT
users who have multiprocessor PCs...

Intel gives away a "maths kernel library" that includes 1D and 2D FFT
routines. They claim that this stuff is nicely optimized for PPros / PIIs.
They also state that the 2D FFT is multithreaded and will take advantage of a
multiprocessor environment if you want it to, and - the tantalising part -
that this will work even if your program (that calls their lib) is
single-threaded. This means that you should be able to hook the Intel lib
onto IDL, with a little "glue", and get some multiprocessor action going at
last. (IDL is single-threaded.) The maths kernel also has some BLAS
routines, a few of which are also multithreaded.

Check out: http://developer.intel.com/design/perftool/INDEX.HTM

Peter Mason

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[Message index]

		Re: IDL performance and FFTs (was: call external speed) By: stevenj on Thu, 17 September 1998 00:00
		Re: IDL performance and FFTs (was: call external speed) By: menakkis on Thu, 17 September 1998 00:00
		Re: IDL performance and FFTs (was: call external speed) By: David Kastrup on Thu, 17 September 1998 00:00
		Re: IDL performance and FFTs (was: call external speed) By: Karl Krieger on Thu, 17 September 1998 00:00
		Re: IDL performance and FFTs (was: call external speed) By: steinhh on Thu, 17 September 1998 00:00
		Re: IDL performance and FFTs (was: call external speed) By: stevenj on Wed, 16 September 1998 00:00
		Re: IDL performance and FFTs (was: call external speed) By: roy.hansen on Wed, 16 September 1998 00:00
		Re: IDL performance and FFTs (was: call external speed) By: Liam Gumley on Wed, 16 September 1998 00:00
		Re: IDL performance and FFTs (was: call external speed) By: steinhh on Wed, 16 September 1998 00:00

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