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This paper presents a robust quadratic placement approach, which offers both high-quality placements and excellent computational efficiency. The additional force which distributes the modules on the chip in force-directed quadratic placement is separated into two forces: hold force and move force. Both of these forces are determined without any heuristics.(More)
Standard cell circuits consist of millions of standard cells, which have to be aligned overlap-free to the rows of the chip. Placement of these circuits is done in consecutive steps. First, a global placement is obtained by roughly spreading the cells on the chip, while considering all relevant objectives like wirelength, and routability. After that, the(More)
This paper presents a fast and accurate routing demand estimation called RUDY and its efficient integration in a force-directed quadratic placer to optimize placements for routability. RUDY is based on a <i>R</i>ectangular <i>U</i>niform wire <i>D</i>ensit<i>Y</i> per net and accurately models the routing demand of a circuit as determined by the wire(More)
We report for the first time on a patient suffering from palinopsia after discontinuation of venlafaxine. Palinopsia is a rare and peculiar phenomenon which is defined as visual images that persist or recur after the stimulating object is removed and is often associated with posterior cerebral lesion or dysfunction. It also has been detected after usage of(More)
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