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Re: Diff between index and assoc based

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[Instr] Albert Chae

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Aug 10, 2008, 7:46:59 PM8/10/08
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Say you have a 2 way SA cache with 4 sets total.

You can think of it as:

Set 0: block a0, block b0
Set 1: block a1, block b1
Set 2: block a2, block b2
Set 3: block a3, block b3

Or

Unit a: block a0, block a1, block a2, block a3
Unit b: block b0, block b1, block b2, block b3

That's all that changing that view mode does.

Albert

On Sun, 10 Aug 2008, Mark Stephen Teixeira wrote:

> So these "associativity units" are different from "Index (Set)"s how?
>
>
> In article <Pine.GSO.4.64.0808101417260.6360@sphere>, "[Instr] Albert Chae"
> <cs61...@imail.eecs.berkeley.edu> writes:
>>
>> Oh yeah, that just means the "associativity" unit. So you have as
>> many of those as the amount of associativity you have.
>>
>> Albert
>>
>> On Sun, 10 Aug 2008, Mark Stephen Teixeira wrote:
>>
>>> When you config under "associativity based", the cache display shows
> different
>>> units. But if it doesn't affect our code, it don't matter. Thanks.
>>>
>>>
>>> In article <Pine.GSO.4.64.0808101351500.6360@sphere>, "[Instr] Albert Chae"
>>> <cs61...@imail.eecs.berkeley.edu> writes:
>>>>
>>>> Those are just different ways to view the cache. You won't have to worry
>>>> about it in all in your code.
>>>>
>>>> I'm not sure what you mean by "Unit". Could I get more context?
>>>>
>>>> Albert
>>>>
>>>> On Sun, 10 Aug 2008, Mark Stephen Teixeira wrote:
>>>>
>>>>>
>>>>> In the cache configuration, what exactly is the difference between Index
>>> (Set)
>>>>> based and Associativity Based? What is a "Unit" and do we care?
>>>>>
>>>>> Thnks
>>>>>
>>>
>

[Instr] Albert Chae

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Aug 10, 2008, 5:19:24 PM8/10/08
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[Instr] Albert Chae

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Aug 10, 2008, 4:52:29 PM8/10/08
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