Good practices of FIFO: updated old cluster or create new

Hello world

My question is more on "good practices" that really solve a problem.

I use FIFO to send images and other data from a producer to a consumer.

I created a cluster which includes all the data that must be sent through the FIFO.

My question is: can I create a new cluster to each loop of the producer and put this cluster in the FIFO or should I set a shift and then register and update the data of this fallen registry change by sending in the FIFO?

Below you will find two screenshots that sums up the idea (NB: these aren't the real VI.) We come here to show the general idea).

If there is a difference (in the way that the computer uses memory for example, or something else...) between these two methods of programming, you will give me some details so that I can understand why to use one over the other, please?

Thank you very much.

Best regards.

Luke

I think that there is very little difference in terms of performance (perhaps the registry approach change is slower than sliiightly - but probably not noticeable in most cases).

The main reason you want to use the shift register approach is that if you update only certain values before sending the data in the queue, those that would be lost if you created a new cluster each time. For example, if 'Directories' was constant, you could just power/updating that once the value to the registry to shift and just update the part "ImageAcquired" of the cluster before you send it in the queue. This also means that if you update your cluster to have more elements (using a type-def, of course), you can be less worried about having to update the individual elements.

I think it is less a problem of performance (both are valid and effective) and more a matter of maintainability and flexibility.

Tags: NI Software

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