> Iwao MAKINO wrote:
>>
>>
>> If you use dual CPU, you MUST fill 8 memory slot to get FULL performance.
>> 667/4 is pretty good... 750/8 is even better
>>
>
> Do the math. If you have 4 SDRAM DIMM's, each 8 bytes wide,
> that's a 32 byte wide data stream, also called 256bits. And,
> clocked at 83.33MHZ, you get 2.6GB/sec, on a single bank. That
> is what the board is spec'd at. The UP2K uses the same memory
> architecture as an XP1000, near as I can tell. One can order
> memory for an XP1000 and it runs perfectly fine in a UP2K.
>
> Going to 8 DIMM's won't get you any more performance.
>
> (I run both UP2K's and XP1000's)
You can use same DIMM for XP-1000 and UP2K, but when we run sets of
benchmarks, it turned out that 4pcs w/ dual CPU did not make quite as much
performance as 8pcs DIMMS.
regards,
-- Iwao Makino Alpha OEM MFG. HIT Corporation Ltd., Tel:+81-3-3714-0469 ChinonHaramachi 1-16-5 Haramachi Fax:+81-3-3714-0789 Meguro 152-0011 http://www.hpc.co.jp/ Tokyo, Japan mailto:makino@hpc.co.jp-- To unsubscribe: send e-mail to axp-list-request@redhat.com with 'unsubscribe' as the subject. Do not send it to axp-list@redhat.com
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