Is there a setting for gmail that is mailing-list aware?  I'm going to see
if there's a way to make "reply all" the default.




On Mon, Mar 18, 2013 at 4:34 PM, <[email protected]> wrote:

> Le 2013-03-18 15:38, Nicolas Boulay a écrit :
>
>> 2013/3/18 Timothy Normand Miller <[email protected]>
>>
>>> For CPUs, 32 was found to be optimal by some paper published back in
>>> the early 90s, I think.  16 was a second best, while 64 had
>>> diminishing returns.  Im not sure how this applies to GPUs,
>>>
>>> however.  One problem with doubling the RF size is that you slow it
>>> down.
>>>
>> This number came without superpipelining and superscalaire in mind.
>>
> not to mention renamed, out-of-order architectures...


True.  A more dominating reason why we don't make the ARF larger is
instruction compactness.  Through renaming, the CPU infers a larger
register file based on dependencies between many in-flight instructions.
 An in-order processor would benefit from a larger ARF, but recent attempts
at that (e.g. Itanium) have been flops, and mostly because memory stalls
can't be scheduled statically.


>
>
>  Unrolling loops is a good way to avoid instruction for the control
>> flow, and removing dependencies between instructions but this need at
>> least twice the number of register.
>>
>
> From memory of the F-CPU design, if we consider a constant stream
> of computation instructions with 2 reads 1 writes that can not overlap
> (the dependencies are loose and the code is unrolled to fit the pipeline),
>
> 32 registers => up to 11 instructions "in flight" in the pipeline at a time
> without dependencies. That means a 5-deep, 2-wide superpipeline.
>
> 64 was chosen for F-CPU because the pipeline could be pushed to 3-wide by
> 7 deep
> or 5 deep * 4 wide. That was the end of the 90s :-)
>
>
>
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-- 
Timothy Normand Miller, PhD
Assistant Professor of Computer Science, Binghamton University
http://www.cs.binghamton.edu/~millerti/
Open Graphics Project



-- 
Timothy Normand Miller, PhD
Assistant Professor of Computer Science, Binghamton University
http://www.cs.binghamton.edu/~millerti/
Open Graphics Project
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