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Is there a limit to the number of CPUs I can use with my Zemax license?

  • 26 June 2020
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Is there a limit to the number of CPUs I can use with my Zemax license?


I am going to create Huygens PSFs on machines with as many CPUs as possible.


Thanks and best regards, Christof.

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Best answer by Allie 26 June 2020, 20:12

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Hi Christof,


OpticStudio does not have a limit on the amount of CPU's it can use. The program will be able to 'see' all available CPUs on your machine; however, this does not automatically mean that OpticStudio will utilize all of the open cores. In general, OpticStudio is built to determine the optimal number of threads necessary to perform the current calculation. It will only use what it needs. This is discussed in more detail in the following forum posts:



In addition to this constraint, Windows itself may also limit the amount of resources any one program can take. This setting is usually manually set - often by a company's IT department - and can be changed through the Task Manager. 


Let us know if you have any other questions about this!


Best,


Allie

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