Keeping matlab engine open

[VincenzoC]

Hello, I am rather new in the labview world, and have a question regarding matlab nodes. It seems that when each node is executed, a new matlab engine is opened. Granted this is good for variable scope, but lousy for speed. Is there any way for all the scripts can be executed in the same instance of engine? Unfortunately I can not combine any more nodes either. Thanks for your time.

[smercurio_fc]

That's not quite right. Matlab nodes in different VIs share the same Matlab space. You'd get a new Matlab "space" if you closed all the VIs that had a Matlab script. If you run one VI and set some variables, and have another VI with another Matlab node, then this other VI's Matlab node will be able to "see" the variables created in the first VI.

You can prove this to yourself by using the attached VI.

• Open "Matlab A". Run it. Keep the VI open.
• Open "Matlab B". Run it.
• You will see that the VI "Matlab B" is able to "see" the variables that were created in the Matlab script from the "Matlab A" VI.