Intel Xeon Processor Multiprocessor Platform Design Guide

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Methodology for Determining Topology and Routing Guidelines
9.2.6.2 Final Solution Space
The final solution space will be referred to as the “phase 3 solution space.” This phase incorporates
effects that are too computationally demanding to easily include in the phase 1 or phase 2 solution
spaces. A final check on the worst case nets under fast and slow conditions should be performed.
The sweeps and the Monte Carlo analysis already performed should allow the worst-case
conditions to easily be chosen. These simulations should be performed using a fully coupled
crosstalk model. The results of the final check should be used to further narrow the solution space.
The routing guidelines should incorporate the entire solution space determined during the
sensitivity analysis in order to provide the maximum amount of flexibility. When some portions of
the routing guidelines cannot be met due to physical real estate limitations or manufacturing
concerns, new solutions need to be determined.
Figure 9-13. Results of Targeted Monte Carlo (TMC) Analysis and the Resultant Phase 2
Solution Space for Variables L2 and L3
L2 [in]
0 2 4 6
0
1
2
L3
[in]
Pass
Fail
New Solution Space