Challenges for Future Interconnection Networks ... - Hot Interconnects
Challenges for Future Interconnection Networks ... - Hot Interconnects
Challenges for Future Interconnection Networks ... - Hot Interconnects
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“Per<strong>for</strong>mability”<br />
Sparing<br />
fh<br />
fh<br />
fh<br />
fh<br />
fh<br />
8 9<br />
10 11<br />
9 10 11<br />
ff fh fh<br />
fh<br />
4 5 6 7<br />
7 8<br />
ff<br />
fh<br />
fh<br />
fh<br />
4 5 6<br />
fl<br />
fl fl fh fh<br />
0 1 2 3<br />
0 1 2 3<br />
• 2 freq domains<br />
•f f < f l < f h<br />
•Declare cores at ≤f f<br />
as failed<br />
•Per<strong>for</strong>mance best<br />
when upper (lower)<br />
half at f h (f l )<br />
8<br />
August 24, 2006<br />
= spare = core failed<br />
(router OK)<br />
Local, small# faults:<br />
Row sparing preserves<br />
original topology<br />
<strong>Hot</strong> <strong>Interconnects</strong> 2006 Panel<br />
= functional tile<br />
w/ unused core<br />
Faults random: Original<br />
topology not preserved-<br />
Spares used w/ economy
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