Re: Running huge Java application on HP-UX ?

Francesco wrote:
Hello,
thanks for your reply.

That would be my strong suggestion. You're simply too close to the
insurmountable 32-bit architectural boundary.

yes I agree. I should probably look for 64-bit binaries of JVM.

Anyone know if it's available Java 64 bit for Hp-UX ?
As far as I know it's available only on Solaris 64-bit/AMD64 and Linux
AMD64.......

http://www.hp.com/products1/unix/java/infolibrary/prog_guide/hotspot.html#-d64
suggests it is:

-d64 (SDK version 1.4 and later)
Runs Java in 64-bit mode. In HP SDK 1.4, interpreter and compiler -Xint, -Xmixed, and -Xcomp modes are supported.

Don

regards
Francesco




Don Morris ha scritto:

Francesco wrote:
Hi all,
we need to start a Java application which needs about 3.8 Giga ram on a
HP UX 11.11.
man chatr (you're looking for +q3p +q4p options). And good luck... that
only leaves you 200Mb for private versions of shared libraries, stack
and text. I really doubt you'll get it... but make sure maxssiz is low
(Java usually recommends a very large one) -- maxssiz is always reserved
from your private virtual address space... so it implicitly limits heap.

Unfortunately when I start the application the JVM with the option
-mx3800M I get an error because memory cannot be reserved.

I found some docs which talk about it....
http://www.hp.com/products1/unix/java/infolibrary/prog_guide/expanding_memory.html

but the application still doesn't start up.

Anyone knows if there are patches that allow an application to run with
this heap ?
or do I have to move to the 64-bit ?
That would be my strong suggestion. You're simply too close to the
insurmountable 32-bit architectural boundary.

Don

.

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