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user278604
Asked: 2015-03-31 21:51:29 +0800 CST

How to limit cores on a Windows server?

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We have procured 8 core server hardware with Windows server 2012 R2, we have the application license only for 4 core server. Is there any option to limit the core on architecture level?

If not what option can be used to install the application?

windows-server-2012-r2

2 Answers

  1. Start your program with 

    C:\Windows\System32\cmd.exe "Your Program" /affinity X

    where X is the processor affinity in hexadecimal value. In your case, affinity F would use CPU cores 0-3.

    A CPU affinity table can be found from this MSDN blog entry:

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  2. This is more of a licensing, than a technical issue, in some cases particularly Microsoft, it wouldn't matter if you weren't using the other CPUs, if they were there they'd have to be licensed. Double check with your vendor to see what they allow.

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