[jboss-user] [JBoss Portal] - Re: Compile Jboss 32bit on Linux 64bit

PeterJ do-not-reply at jboss.com
Wed Jul 1 16:52:58 EDT 2009


Not sure what you are asking. The JVM is a virtual machine that defines its own instruction set and architecture, including the size of the data types. This virtual machine, within which Java apps run, is the same regardless of the architecture of the host environment, whether 32, 64 or even 48 bits (we have a JVM that runs on a 48bit machine, and JBoss AS runs without changes). Thus, a 64-bit JVM running on a 64-bit Linux OS provides the exact same virtual machine environment for Java applications as would a 32-bit JVM running on Windows (well, because the 64-bit JVM has a larger available memory area, you can assign larger heaps than for a 32-bit JVM). This is what makes the "compile once, run everywhere" mantra for Java true.

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