How do I compile Labview program so multiple instances run on one computer?

[barney99]

I would like to have the ability to run multiple instances of a single executable Labview program  on the same computer.  Is there an option I should set during compilation?

[Ben]

Completely ignoring issue surounding shared resources (same file. I/O devices, network connections etc.)

Just copy your exe to unique names and run them.

EG

App name = Test.exe

copy to new names

Test1.exe

Test2.exe

Ben

[TCPlomp]

There is an INI setting:

allowmultipleinstances = TRUE 

Ton

[vt92]

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TonP wrote:

There is an INI setting:

allowmultipleinstances = TRUE 

Ton

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The INI file setting is for running multiple instances of LabVIEW, not necessarily multiple instances of a LabVIEW run-time application, correct? 

[TCPlomp]

The linked wiki page suggests it also works for executables.

Ton

[DFGray]

Do you need the multiple instances to communicate?  If so, use the INI file settings and VI server to launch them into the same run time engine.  These settings in your INI file may be of use.

server.tcp.enabled=true
hideRootWindow=true
server.tcp.port=nnnn
server.tcp.access="+localhost"

Make sure you use a unique port number.  Launch your main VIs by first using Open Application Reference with the port in your INI file and "localhost" as the machine name.  Then use this application reference to open your main VI using Open VI Reference.  Run it using the Run method with Wait Until Done set to FALSE and Autodispose Ref set to TRUE.  Make sure it has its front panel open before you close your launcher or the LabVIEW runtime engine will close (since you have the VI ref, you can do a slow poll on the execution state or front panel open/closed properties).

Be careful with shared VIs.  Reentrancy and VI templates are your friends.