Can we limit number of CPUs seen by a JVM/Java programs?

We have a Java application which is licensed in several tiers for a number of CPUs (i.e. 1 for trial, 4 and unlimited CPUs for supported version of different cost).
If the application is not provided with a supported license and is executed on multiprocessor hardware, it complains and aborts.
When we tried this application on a Solaris server, we made a zone with a single CPU thread as a dedicated processor, and the application worked.
Now we are trying to set up a trial version on a developer's Windows CoreDuo notebook, and since there are two cores the trial version barks and aborts.
Can we use some JVM feature to force it into seeing and using only a certain number of CPUs, smaller than the number of available hardware CPUs (or at least reporting that number to the java apps)?

You can set the processor affinity to the process you are interested in. Just go to "Task Manager" and click the processes tab, highlight the process you care about and right click it, then select "set affinity" menu and bind that process to the processor you want. This requires you to have the process running first, if that does not work for you, you can write a launcher which calls SetProcessAffinityMask call provided for Windows (see http://msdn.microsoft.com/en-us/library/ms686223(VS.85).aspx for details) and then launch the java process. This works since process affinity is inherited by any child process or newly instantiated local process based on the MSDN documents.

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Attachments:
Decoder.txt ‏5 KB

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Debbie (guest) wrote:
: Chad Nale (guest) wrote:
: : How can I limit the number of rows returned by a select
: : statement. I have a query where I return the number of
: stores
: : that are located in a given area.. I only want to return the
: : first twenty-five stores. In some instances there may be
: over
: : 200 stores in a given location.
: : I know is SQL 7 that I can set the pagesize to be 25....
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Can we limit number of CPUs seen by a JVM/Java programs?

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