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Subject: Re: Quad Xeon questions

Author: Robert Hyatt

Date: 20:53:25 12/13/98

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On December 13, 1998 at 22:59:08, Larry Applebaum wrote:

>On December 13, 1998 at 22:16:39, Robert Hyatt wrote:
>
>snip...
>
>>quad xeon is in...  and running on ICC... typical speed is 600-800K nodes
>>per sec, max (so far) is 940K...
>
>What are the specs on that system? Motherboard, processor specs, memory, etc


It is based on the 450NX chipset, the chassis is made by Intel, and is called
the SC450NX...  has three 400 watt power supplies (hot swappable), slots for
16 72 bit buffered EDO RAM with 4-way interleaving (interleaving makes SDRAM
worthless).  Comes with three on-board SCSI adapters, two ultra-2 wide
(low voltage differential signaling) channels and one narrow scsi channel.
Has 3 external drive bays for CDrom/tape/hard drives, plus 6 hot-swap SCA-2
connecters in a SCSI Cage...

My machine has 4 pentium II/xeon 400mhz processors with 512kb of L2 cache,
plus 512mb of RAM.  It has two 4.3 gig 7200 rpm disks for system and so forth,
and (hopefully tomorrow) will have three 9.1 gig Ultra2 wide SCSI 10,000 RPM
disks with 4 megs of cache per drive (for the complete set of 3-4-5 piece
Nalimov tablebases).

machine has 8 redundant fans, four for the cpus, 2 for the rest of the MB
logic, two for the SCSI cage, plus one internal fan in each power supply for
a total of 11 fans (machine stays cool internally, naturally).  Everything is
monitored, from power supplies, to temps of the procssors, to each fan's
rotating speed (tachometer on each fan) and so forth.

machine weighs about 100 lbs...

Has a nice cirrus logic video controller (CL5480 I think) plus the usual
2 serial ports, parallel port, and USB port...

let me know if you want more details...

Bob



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