Well, nobody was able to offer share any real-life direct comparisons between the CPUs but I did get some helpful info to comtemplate. There are some benchmarks for SPARC IV machines at www.spec.org. You might want to look at: SunFire 6900 w/24 SPARV IV CPUs @1200 MHz http://www.specbench.org/cpu2000/results/res2004q1/cpu2000-20040220-02891.pdf SunFire 6800 2/24 SPARC III CPUs @1200 MHz http://www.specbench.org/cpu2000/results/res2003q2/cpu2000-20030505-02147.pdf Contrary to some statements I heard. It is possible to mix SPARC III and SPARC IV CPUs in a domain, BUT SPARC IV CPUs will require you to run (or upgrade to) Solaris 04/04. Sun says you will see between 60 and 90% better performance, depending on the application, with SPARC IV compared to SPARC III. But, again, I haven't seen any real-life direct comparisons yet. In the meantime I've been told we'll be buying 12 SPARC IV for our SF6800, which will give us 12 SPARC III and 12 SPARC IV CPUS. So it looks like I'll be able to do my own comparisons soon. My next little project will be slicing up my single-partition machine into a 3-domain, dual-partition machine. ---------------------------------------------------------------------------- Partition 0: [RP0 RP1] Domain A: 12 SPARC III CPU, [SB0][SB][SB4][IO6][IO8] ---------------------------------------------------------------------------- Partition 1: [RP2 RP3] Domain C: 8 SPARC IV CPUs, [SB1][SB3] [IO7] Domain D: 4 SPARC IV CPUs, [SB5] [IO9] ---------------------------------------------------------------------------- If anybody has any good tips or pitfalls for me to watch out for, I wouldn't mind hearing from your experiences. Regards, -- Alan Miller is:energy GmbH Unit Operations, Operating Systems - OPOO Tresckowstrasse 3 30457 Hannover Telefon: (0511) 439-4292 Telefax: (0511) 439-4226 Email: alan.miller@is-energy.de I-Net: <www.is-energy.de> _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagersReceived on Fri Jun 18 12:03:08 2004
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