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Memory-addressing constraints

#1 User is offline   Steve 

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Posted 20 January 2012 - 11:51 AM

I have an application that currently uses 48 gig of RAM - and the plan is to load it to a box with 192. I'm assuming that the current 32bit compile won't support that. Is this correct?
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#2 User is offline   AlexM 

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Posted 26 January 2012 - 05:57 AM

Correct.

Address space for 32-bit applications is limited to 4 Gb. In practice, 32-bit Java applications can use up to 1.2-3.5 Gb of memory for Java heap depending on OS and system configuration.

64-bit version of Excelsior JET is not available yet, but it is actively developed right now. It will allow Java heaps > 4Gb.
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