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Re: IDL 8.2.2 released [message #83579 is a reply to message #83106]

Wed, 20 March 2013 02:58

tom.grydeland
Messages: 51
Registered: September 2012

Member

On Thursday, February 7, 2013 12:09:57 AM UTC, Mark Piper wrote:
> I love the fact that people care enough about IDL (like I do) to post comments on this thread! Please keep them coming. I'll try to respond to each comment in a critical and responsible manner.
>
>

Hello,

I heard that plotting speed had improved in 8.2.2 and decided to give it a go.

Building up plots incrementally is still painfully slow. The routine below creates an illustration of a phased array antenna where all elements are aligned radially or tangentially. On a reasonable computer, building the plot takes an unreasonable 44 seconds to complete. (linux x86_64 m64)

I am profiling the call, and getting some very interesting statistics:

Hit count Time self(s) Time+sub(s) Sys Routine
292577 1.0121676922 1.0121676922 1 IDLGRPLOT::GETPROPERTY
1311191 2.1339576244 2.1339576244 1 IDLITCOMPONENT::GETPROPERTY
116646 1.2261884212 10.1981632710 0 IDLITVISPLOT::GETXYZRANGE
560278 2.1338310242 2.1338310242 1 IDL_CONTAINER::GET
619133 0.7483308315 0.7483308315 1 MIN
297796 1.9745259285 3.3823873997 0 _IDLITCONTAINER::GET
259440 5.5053386688 11.2065567970 0 _IDLITCONTAINER::_GETIDENTIFIERS
256828 1.5982770920 1.9980626106 0 _IDLITVISUALIZATION::GETPROPERTY
118096 3.9485795498 14.2965276241 0 _IDLITVISUALIZATION::GETXYZRANGE
122931 1.0249559879 1.3674829006 0 _IDLITVISUALIZATION::SEEKPIXELATEDVISUALIZATION
233776 4.5677740574 5.8650910854 0 _IDLITVISUALIZATION::_ACCUMULATEXYZRANGE

So the time spent per routine call isn't bad, but the hit counts ...

No less than 26 routines are being called more than 90 thousand times each.

12 routines take up more than a second of accumulated time each, totalling over 28 seconds between them.

We're talking about 121 points and 240 lines here. Not exactly staggering.

> Thanks,
> mp
> IDL Product Manager
> mark.piper@exelisvis.com

Cheers,

--T

function radial_antenna, n, length=length

if n_elements(length) eq 0 then length = 0.9

ii = indgen(n)-(n-1.)/2
xx = ii[*,ii]
yy = transpose(xx)
cg = plot(xx[*], yy[*], 'D', aspect_ratio=1)
;; cg.refresh, /disable

nx = n_elements(xx)
if nx mod 2 then begin
;; if there is an element in the centre, eliminate it
tmp = [indgen(nx/2), nx/2+1+indgen(nx/2)]
xx = xx[tmp]
yy = yy[tmp]
endif
th = atan(yy, xx)

for ii=0L, n_elements(xx)-1 do begin
cx = length/2*[-1, 1]*cos(th[ii])
cy = length/2*[-1, 1]*sin(th[ii])
!null = plot(xx[ii]+cx, yy[ii]+cy, 'k', /current, /overplot)
!null = plot(xx[ii]-cy, yy[ii]+cx, 'r', /current, /overplot)
endfor

cg.refresh
return, cg
end

;; main routine
profiler, /reset
profiler, /system
profiler

cg = radial_antenna(11)

profiler, /report, filename='report.txt'

end

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[Message index]

		IDL 8.2.2 released By: Mark Piper on Tue, 05 February 2013 09:39
		Re: IDL 8.2.2 released By: David Fanning on Wed, 06 February 2013 16:24
		Re: IDL 8.2.2 released By: Mark Piper on Thu, 07 February 2013 08:16
		Re: IDL 8.2.2 released By: Mark Piper on Wed, 06 February 2013 16:09
		Re: IDL 8.2.2 released By: tom.grydeland on Wed, 20 March 2013 02:58
		Re: IDL 8.2.2 released By: Mark Piper on Wed, 06 February 2013 16:00
		Re: IDL 8.2.2 released By: Matt[2] on Thu, 07 February 2013 08:20
		Re: IDL 8.2.2 released By: Mark Piper on Wed, 06 February 2013 15:23
		Re: IDL 8.2.2 released By: Bob[4] on Wed, 06 February 2013 13:23
		Re: IDL 8.2.2 released By: Bob[4] on Thu, 07 February 2013 10:53
		Re: IDL 8.2.2 released By: dain.cilke on Thu, 07 February 2013 14:07
		Re: IDL 8.2.2 released By: Louis Giglio on Wed, 06 February 2013 13:01
		Re: IDL 8.2.2 released By: Andy Sayer on Thu, 07 February 2013 06:22
		Re: IDL 8.2.2 released By: Fabzi on Wed, 06 February 2013 11:18
		Re: IDL 8.2.2 released By: David Fanning on Wed, 06 February 2013 10:24
		Re: IDL 8.2.2 released By: Mark Piper on Wed, 06 February 2013 09:20
		Re: IDL 8.2.2 released By: Mark Piper on Wed, 06 February 2013 09:18
		Re: IDL 8.2.2 released By: David Fanning on Wed, 06 February 2013 06:51
		Re: IDL 8.2.2 released By: Fabzi on Wed, 06 February 2013 06:37
		Re: IDL 8.2.2 released By: lecacheux.alain on Wed, 06 February 2013 04:29
		Re: IDL 8.2.2 released By: Fabzi on Wed, 06 February 2013 01:44
		Re: IDL 8.2.2 released By: wlandsman on Tue, 05 February 2013 23:29
		Re: IDL 8.2.2 released By: David Fanning on Tue, 05 February 2013 15:06
		Re: IDL 8.2.2 released By: wlandsman on Tue, 05 February 2013 14:28
		Re: IDL 8.2.2 released By: timothyja123 on Sat, 09 February 2013 02:44
		Re: IDL 8.2.2 released By: Matt Haffner on Fri, 08 February 2013 13:48
		Re: IDL 8.2.2 released By: Michael Galloy on Wed, 13 February 2013 16:19
		Re: IDL 8.2.2 released By: Mark Piper on Wed, 20 March 2013 14:10
		Re: IDL 8.2.2 released By: Fabzi on Fri, 08 February 2013 09:15
		Re: IDL 8.2.2 released By: Fabzi on Fri, 08 February 2013 09:04
		Re: IDL 8.2.2 released By: timothyja123 on Tue, 12 February 2013 16:43
		Re: IDL 8.2.2 released By: dain.cilke on Fri, 08 February 2013 08:24
		Re: IDL 8.2.2 released By: chris_torrence@NOSPAM on Fri, 08 February 2013 08:14
		Re: IDL 8.2.2 released By: Bob[4] on Thu, 07 February 2013 14:55
		Re: IDL 8.2.2 released By: dain.cilke on Thu, 07 February 2013 14:10
		Re: IDL 8.2.2 released By: Bob[4] on Thu, 07 February 2013 12:14
		Re: IDL 8.2.2 released By: David Fanning on Thu, 07 February 2013 11:15
		Re: IDL 8.2.2 released By: chris_torrence@NOSPAM on Thu, 07 February 2013 09:11
		Re: IDL 8.2.2 released By: Mark Piper on Thu, 07 February 2013 08:55
		Re: IDL 8.2.2 released By: David Fanning on Thu, 07 February 2013 08:21
		Re: IDL 8.2.2 released By: Mark Piper on Thu, 14 February 2013 08:23
		Re: IDL 8.2.2 released By: Michael Galloy on Wed, 13 February 2013 16:16
		Re: IDL 8.2.2 released By: timothyja123 on Wed, 13 February 2013 14:52
		Re: IDL 8.2.2 released By: Fabzi on Wed, 13 February 2013 02:04
		Re: IDL 8.2.2 released By: lecacheux.alain on Wed, 20 March 2013 09:07
		Re: IDL 8.2.2 released By: tom.grydeland on Thu, 21 March 2013 02:38
		Re: IDL 8.2.2 released By: Mark Piper on Thu, 21 March 2013 09:41
		Re: IDL 8.2.2 released By: chris_torrence@NOSPAM on Mon, 15 April 2013 21:08
		Re: IDL 8.2.2 released By: tom.grydeland on Fri, 26 April 2013 03:06
		Re: IDL 8.2.2 released By: chris_torrence@NOSPAM on Fri, 26 April 2013 14:33
		Re: IDL 8.2.2 released By: tushar on Thu, 25 April 2013 23:31

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