Have you checked the IBM JRE/JDK 1.4.1 for x86_64 (Opterons)? I am running IBM JRE/JDK 1.4.1 on a dual Opteron running SuSE SLES 8 for AMD64. When I updated with Service Pack 3, I'm almost sure it said that it was a 64-bit JVM. Whether it will use more than 3.8GB, I do not know yet - I only have 2GB on the server. It would seem awfully strange for a 64-bit program to be limited to 3.8GB of memory. java version "1.4.1" Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1) Classic VM (build 1.4.1, J2RE 1.4.1 IBM build cxia32141-20030522 (JIT enabled: jitc)) #:~/tomcat/logs> uname -a Linux kingfish 2.4.21-207-smp #1 SMP Thu Mar 11 15:46:44 UTC 2004 x86_64 unknown #:~/tomcat/logs> Now, I could see that an HP shop might now want to run the IBM JRE, but that's another issue :) Hope this helps - Richard -----Original Message----- From: suseamd64@rgare.com [mailto:suseamd64@rgare.com] Sent: Wednesday, April 14, 2004 2:54 PM To: suse-amd64@suse.com Subject: [suse-amd64] amd64 / linux / java fud? hello -- i'm sorry if this is not the appropriate place for this question. an hp loyalist has convinced some decision makers that we can't use opterons for an in house app because he claims there's no linux jvm that uses more than 3.8GB of memory. i couldn't find anything on the blackdown.org site backing this up, and couldn't find anything googling around. is he just spreading fud? does anyone here have experience and/or documentation that *nix 1.4+ java can use more than 3.8GB of ram? i just cringe when i see us purchasing super expensive quad itanium-2 boxes when our own in-house testing had our 2-way suse/opteron box out-performing a 4-way itanium(1) machine by 10%+. again, appologies if this would be better suited on the blackdown.org mailing list. info appriciated, -- john -- Check the List-Unsubscribe header to unsubscribe For additional commands, email: suse-amd64-help@suse.com