Re: Sun E4500 Memory Interleave Oddity

From: Chris Newport (me_at_see-my-sig.invalid)
Date: 08/27/04 

Date: Fri, 27 Aug 2004 12:42:48 +0100

On Friday 27 August 2004 12:32 pm in comp.sys.sun.admin Keg wrote:

> I noticed this in the output of prtdiag. We just had a DIMM replaced
> and now I'm not sure if this was like this before or after the
> maintenance. The is an E4500 with 10 cpu's/10gb memory.
>
> ========================= Memory =========================
>
> Intrlv. Intrlv.
> Brd Bank MB Status Condition Speed Factor With
> --- ----- ---- ------- ---------- ----- ------- -------
> 0 0 1024 Active OK 60ns 8-way A
> 0 1 1024 Active OK 60ns 8-way A
> 2 0 1024 Active OK 60ns 8-way A
> 2 1 1024 Active OK 60ns 8-way A
> 4 0 1024 Active OK 60ns 8-way A
> 4 1 1024 Active OK 60ns 8-way A
> 6 0 1024 Active OK 60ns 8-way A
> 6 1 1024 Active OK 60ns 2-way B
> 7 0 1024 Active OK 60ns 8-way A
> 7 1 1024 Active OK 60ns 2-way B
>
> If you notice, the interleave on Bank 1 of boards 6&7 is different. Do
> I have a problem here?

No, you have 8 banks in an 8 way interleave, leaving 2 banks
to make a 2 way interleave. Adding another 6 banks would
give you 2 8 way interleaves. 

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