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vrf File I/O Timing

Question asked by carnahal on Apr 7, 2004

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Hi Ron and the vrf,

> Scott, At what point was support for the HP-UX version of
> VEE stopped?

I wasn't directly involved with VEE in those days, but my understanding is there was a 6.0, then a 6.02 for HP-UX, and that was the end. It supported HP-UX 10.2, but never HP-UX 11.anything.

> How difficult would it be to port the HP-UX code to Linux?

It would take at least some number of engineer-years by experienced software engineers to get it in good enough shape to be saleable as a product. Note that these would be the same engineers who are currently involved in enhancing VEE for Windows; we'd have to rob Peter to pay Paul in terms of engineering resources.

There would need to be a pretty big potential T&M customer base in Linux to make this an economic prospect for Agilent. We just don't see that size of T&M Linux base and we do have such a base in Windows right now. From that, I find it pretty easy to draw a conclusion about the probability of our adding Linux to the stable at some cost in Windows progress.

Ain't high.

Best Regards,

Scott Bayes
Software Technical Support

Agilent Technologies, Inc.
815 14th Street S.W.
Loveland, CO, U.S.A. 80537

970 679 3799 Tel
970 635 6867 Fax

> -----Original Message-----
> From: Ron.Simonson [mailto:ron.simonson@analog.com]
> Sent: Wednesday, April 07, 2004 7:18 PM
> To: PDL-LISTS,VRF (A-Lists,unix1)
> Subject: [vrf] Re: VEE for Linux.
>
>
> Scott, At what point was support for the HP-UX version of
> VEE stopped?
> How difficult would it be to port the HP-UX code to Linux?
> If the HP-UX
> code was on par with VEE 5, I would be very interested in
> using that for
> my work. For my research project at school I am already designing the
> system to use Linux to control my electron beam optics and
> scanning. I am
> sure all the features added to VEE in VEE Pro and up to VEE7
> are really
> useful and exciting to many, but for me they hold no
> interest! I am very
> happy with VEE5. I use Octave, gnuplot, and other tools for my data
> analysis
> and display so Matlab scripting and .NET framework don't make
> me want to
> upgrade. A VEE port would definately increase my interest in
> upgrading up
> to two of the three seats we currently own. I would probably upgrade
> one for
> now and then depending on how well it works, would step up
> and upgrade the
> second. If the opportunity to beta test a Linux port comes up within
> this year
> I would be very happy to test it both here at work and at school.
>
> VEE is a great product and this forum is truly exceptional.
> I am quite
> grateful
> to the contributors and the the folks at Agilent that keep it
> running.
> I am also
> grateful to Greg Goebel for keeping the reflector going in
> the early days.
>
> Ron.
>
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VRFuser Apr 7, 2004 12:21 AM

I just happen to have Vee 4, 5, 6 and 7 installed on the same machine (Win 2000 SP4) and ran this using all versions.

Vee 4 - 8.6ms
Vee 5 - 9.0ms
Vee 6 - 9.6ms
Vee 7 - 14.5ms

Dave Andersen

-----Original Message-----
From: Carnahan, Lyle [mailto:carnahal@tycoelectronics.com]
Sent: Wednesday, April 07, 2004 2:34 PM
To: VRF
Subject: [vrf] File I/O Timing

Hi all,

I was just wondering if anyone has noticed slower file access times in VEE
7. I have the evaluation version and was running or test software
(generating simulated data) and noticed that in VEE 7 the program slowed by
15-20%. The attached example was written in VEE 5.01 (I don't have access to
6.x) in Win2000. On my system the same program in VEE 5 takes on average
11ms to read 2000 real values from a file, while in VEE 7 this is 21ms. This
may not seem like alot, but we take all our data and perform post processing
for different tests. On my simulated data I go from 7 minutes to 9.5
minutes, but I have estimated with the test equipment this will add 1.5
hours.

I don't have access to VEE 6 so I don't know if this also occurred in that
version, or if it is introduced in VEE 7. Any help/suggestions would be
appreciated.

Thanks,

Lyle Carnahan
Aerospace and Defense Business Unit
M/A-COM Inc.
1011 Pawtucket Boulevard
Lowell, MA 01853-3295

Phone: (978) 442-4504
Fax: (978) 442-4520
carnahal@tycoelectronics.com

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VRFuser Apr 7, 2004 1:56 AM

Hi Lyle! Hi vrf,

So I did some tests, Win2K SP5, lots of apps running, VEE revs 6.01, 6.2 and 7.0, with your app. Ran 5 times in each rev, not starting or stopping any other apps between runs, no mouse movement, logging total time as reported in the top alpha display in your app. I don't have 5.01 installed.

Got out Excel and got the following results with 95% confidence level (Excel's CONFIDENCE function) for times:

6.01: mean 2.845 seconds, expected range 2.817 to 2.874 seconds
6.2: mean 2.973 seconds, expected range 2.905 to 3.042 seconds
7.0: mean 3.525 seconds, expected range 3.497 to 3.553 seconds

So I'd have to say there is very likely a small but statistically significant slowdown from 6.01 to 6.2 of about 0.13 seconds (5%), probably no more than about 0.23 seconds (8%), and a much larger one from 6.2 to 7.0 of about 0.55 seconds (19%), no more than about 0.65 (22%) seconds.

If I got my stats computations right, that is. 5 may not really be enough samples and I may have had a too-long day.

I don't know what might have caused the slowdowns; nothing obvious to the eye in the 6.2 to 7.0 change list. Might need to break pieces off the program and redo comparisons till you find what the big slowdowns are, because it may not all be due to file IO time.

Best Regards,

Scott Bayes
Software Technical Support

Agilent Technologies, Inc.
815 14th Street S.W.
Loveland, CO, U.S.A. 80537

970 679 3799 Tel
970 635 6867 Fax

> -----Original Message-----
> From: Carnahan, Lyle [mailto:carnahal@tycoelectronics.com]
> Sent: Wednesday, April 07, 2004 3:34 PM
> To: PDL-LISTS,VRF (A-Lists,unix1)
> Subject: [vrf] File I/O Timing
>
>
>
> Hi all,
>
> I was just wondering if anyone has noticed slower file access
> times in VEE
> 7. I have the evaluation version and was running or test software
> (generating simulated data) and noticed that in VEE 7 the
> program slowed by
> 15-20%. The attached example was written in VEE 5.01 (I don't
> have access to
> 6.x) in Win2000. On my system the same program in VEE 5 takes
> on average
> 11ms to read 2000 real values from a file, while in VEE 7
> this is 21ms. This
> may not seem like alot, but we take all our data and perform
> post processing
> for different tests. On my simulated data I go from 7 minutes to 9.5
> minutes, but I have estimated with the test equipment this
> will add 1.5
> hours.
>
> I don't have access to VEE 6 so I don't know if this also
> occurred in that
> version, or if it is introduced in VEE 7. Any
> help/suggestions would be
> appreciated.
>
> Thanks,
>
>
> Lyle Carnahan
> Aerospace and Defense Business Unit
> M/A-COM Inc.
> 1011 Pawtucket Boulevard
> Lowell, MA 01853-3295
>
> Phone: (978) 442-4504
> Fax: (978) 442-4520
> carnahal@tycoelectronics.com
>
>
>

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VRFuser Apr 7, 2004 5:05 AM

uh oh !!!

     -----Original Message-----
     From: Andersen Dave-P26278 [mailto:Dave.Andersen@gdds.com]
     Sent: Wed 4/7/2004 3:21 PM
     To: VRF
     Cc:
     Subject: [vrf] RE: File I/O Timing



     I just happen to have Vee 4, 5, 6 and 7 installed on the same machine (Win 2000 SP4) and ran this using all versions.

     Vee 4 - 8.6ms
     Vee 5 - 9.0ms
     Vee 6 - 9.6ms
     Vee 7 - 14.5ms

     Dave Andersen

     -----Original Message-----
     From: Carnahan, Lyle [mailto:carnahal@tycoelectronics.com]
     Sent: Wednesday, April 07, 2004 2:34 PM
     To: VRF
     Subject: [vrf] File I/O Timing



     Hi all,

     I was just wondering if anyone has noticed slower file access times in VEE
     7. I have the evaluation version and was running or test software
     (generating simulated data) and noticed that in VEE 7 the program slowed by
     15-20%. The attached example was written in VEE 5.01 (I don't have access to
     6.x) in Win2000. On my system the same program in VEE 5 takes on average
     11ms to read 2000 real values from a file, while in VEE 7 this is 21ms. This
     may not seem like alot, but we take all our data and perform post processing
     for different tests. On my simulated data I go from 7 minutes to 9.5
     minutes, but I have estimated with the test equipment this will add 1.5
     hours.

     I don't have access to VEE 6 so I don't know if this also occurred in that
     version, or if it is introduced in VEE 7. Any help/suggestions would be
     appreciated.

     Thanks,


     Lyle Carnahan
     Aerospace and Defense Business Unit
     M/A-COM Inc.
     1011 Pawtucket Boulevard
     Lowell, MA 01853-3295

     Phone: (978) 442-4504
     Fax:   (978) 442-4520
     carnahal@tycoelectronics.com



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