30 September 2009 Parallel processing for pitch splitting decomposition
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Decomposition of an input pattern in preparation for a double patterning process is an inherently global problem in which the influence of a local decomposition decision can be felt across an entire pattern. In spite of this, a large portion of the work can be massively distributed. Here, we discuss the advantages of geometric distribution for polygon operations with limited range of influence. Further, we have found that even the naturally global "coloring" step can, in large part, be handled in a geometrically local manner. In some practical cases, up to 70% of the work can be distributed geometrically. We also describe the methods for partitioning the problem into local pieces and present scaling data up to 100 CPUs. These techniques reduce DPT decomposition runtime by orders of magnitude.
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Levi Barnes, Levi Barnes, Yong Li, Yong Li, David Wadkins, David Wadkins, Steve Biederman, Steve Biederman, Alex Miloslavsky, Alex Miloslavsky, Chris Cork, Chris Cork, } "Parallel processing for pitch splitting decomposition", Proc. SPIE 7488, Photomask Technology 2009, 74882L (30 September 2009); doi: 10.1117/12.831396; https://doi.org/10.1117/12.831396

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