Does a "subroutine priority" mean anything in an FPGA?
Since a programmed FPGA is a collection of hardware logic strung together with potentially a great deal of it in parallel, does setting the execution priority properties of FPGA subVIs to "subroutine" really do anything? If you read the description of what a subroutine priority does, it says it devotes all the resources of an execution thread to the subroutine code. This to me implies time sharing of resources. But I don't think time-shared execution threads exist in an FPGA, or do they? Do any of the other possible execution priority levels mean anything to FPGA code?
Solved!
Go to Solution.
Execution priorities have no effect in FPGA. Every subVI that does not require arbitration (ie, is either reentrant or used only once) is inlined into the main VI at compile time. As far as I know, execution priority has no effect on arbitration for those subVIs that do require it.
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SubVI with "Subroutine"-priority
It's known that it is impossible to call a non-"Subroutine"-SubVI from a
SubVI with "Subroutine"-priority. Actually subroutines are much faster,
because they do not create their own thread, as SubVIs with other
priority-levels do.
Is it possibly to force Labview not executing an own thread for every SubVI
that has a higher priority than "Subroutine" ?!?
Philipp> It's known that it is impossible to call a non-"Subroutine"-SubVI from a
> SubVI with "Subroutine"-priority. Actually subroutines are much faster,
> because they do not create their own thread, as SubVIs with other
> priority-levels do.
> Is it possibly to force Labview not executing an own thread for every SubVI
> that has a higher priority than "Subroutine" ?!?
>
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all VIs that use an execution system share the threads. By default, each
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Subroutines turn off
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panel interaction -- the panel is not read or written to while the VI
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Message was edited by:
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