Question about multithread and dual core processor

[Tanakorn Numrubporn]

May anyone explain to me about JVM on dual core processor? Is jvm native support for dual core?
Please suggest some books or article on the web that I can find information about this topic.

Thank you

[Ernest Friedman-Hill]

Hi,

Welcome to JavaRanch!

Modern JVMs leave it up to the OS to schedule threads. If the OS supports the multicore processor properly, and can schedule parallel threads on the multiple cores, then your JVM can take advantage of it. The JVM is no different from any other program in this regard.

Not sure what sort of additional documentation you'd like to see; you won't find anything.

[Tanakorn Numrubporn]

glad to meet this java community.
thank you for reply.

If I want to develop parallel computation program to run on dual-core architecture, is it have to make a "special thing" on this architecture that difference from the ordinary "real" multi-processor?.

[Ernest Friedman-Hill]

No, in either case you can just write a program with several concurrent threads and expect them to run simultaneously on different processors or cores.

[Tanakorn Numrubporn]

Thank you
Your reply is very useful for me

[Mr. C Lamont Gilbert]

The only real difference is if you want to optimize your program, you might actually ask the OS if there are multiple CPUs present, and only spawn extra threads if they are actually multiple CPUs. But its not really necessary.