By: Michael S (already5chosen.delete@this.yahoo.com), November 10, 2008 4:31 am
Room: Moderated Discussions
Henrik S (henrik.stahl@nospam.oracle.nothanks.com) on 11/10/08 wrote:
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>The best L5420 score with JRockit (from NEC) is *much* higher: 1010 ssj_ops/watt
>http://www.spec.org/power_ssj2008/results/res2008q3/power_ssj2008-20080714-00064.html
>
>This is on Windows (will yield a slightly higher score), with different BIOS settings
>and with 2x4 GB DIMMs instead of 8x2.
>
>Interesting enough, the NEC submission has a higher peak score (288502 vs 267804)
>despite the fact that it is uses a smaller Java heap and the slower (?) 4 GB DIMMs.
>This is counterintiutive to me and makes me suspect that the AMD Xeon submission
>is on a machine with a less optimized BIOS.
>
Did you find a specification for NEC ECO CENTER in English?
I couldn't.
If, like Supermicro 6015C-MTB, it is based on San Clemente chipset then Blackford/Seaburg based experience with regard to which memory is faster could not apply. It's possible that a couple of dual-rank DIMMs is the fastest memory option for that chipset.
---------------------------
>The best L5420 score with JRockit (from NEC) is *much* higher: 1010 ssj_ops/watt
>http://www.spec.org/power_ssj2008/results/res2008q3/power_ssj2008-20080714-00064.html
>
>This is on Windows (will yield a slightly higher score), with different BIOS settings
>and with 2x4 GB DIMMs instead of 8x2.
>
>Interesting enough, the NEC submission has a higher peak score (288502 vs 267804)
>despite the fact that it is uses a smaller Java heap and the slower (?) 4 GB DIMMs.
>This is counterintiutive to me and makes me suspect that the AMD Xeon submission
>is on a machine with a less optimized BIOS.
>
Did you find a specification for NEC ECO CENTER in English?
I couldn't.
If, like Supermicro 6015C-MTB, it is based on San Clemente chipset then Blackford/Seaburg based experience with regard to which memory is faster could not apply. It's possible that a couple of dual-rank DIMMs is the fastest memory option for that chipset.