LabWindows/CVI

[djaid]

hello,

  I'm working on an application: Whichever I utlise several

 canvas (2 to 8) for displaying analog signals,

 the canvas are refreshed 25 times per second, one at a time.

 Now I test my application, version and release using

  an optimizing compiler,

 and I noticed that when I launch my application from

 the development environment LabWindows / CVI

 The good speed at which signals are displayed 25 times per second.

 But when I run my application, with the same binary executable,

 and in the case or the development environment LabWindows / CVI is

  not in use,

 the display speed of the signals is slowed so significantly.

 I am looking for any parameters or functions to be used to maintain

 the performance of my application.

 Thank you for your cooperation.

[D_Biel]

Hi djaid,

I'm a little confused on your wording here. Is the executable slower when running inside the environment or outside? Are you running a debug version when it is slower?

However, you mention that you are using the canvases to display analog signals. Is there a reason you are not using the CVI Graph control? The Graph control is designed specifically for displaying analog signals and is likely to give you better performance than a canvas. Plus it is a lot easier to use because it has an API for plotting analog signals.

[djaid]

Hi,

It’s faster when running in inside the environment,

It’s a release version in both cases,

Usually, we found that the graph are faster than The Graph control.

Djaid

[djaid]

Hello,

I'm using the Canvas Control in order to Graph Data like is explain

on this web page http://zone.ni.com/devzone/cda/epd/p/id/3475

My hardware is an industrial computer , with a CPU card from IEI Technology which the reference is:

WSB-9454 Intel® 945G with LGA775 Core 2 Duo CPU FSB 1066MHz, VGA, Dual PCIE GbE, SATAII ,

four custom acquisition boards provided by our customer; and the software is running on Windows XP SP3

Now, i running the application with no graphics hardware acceleration,

the data are quickly plotted in all cases.

I'm looking for a solution to solve this hardware incompatibility?

Thanks.

djaid