scholarly journals Logic synthesis and physical design: Quo vadis?

2011 ◽  
Author(s):  
G De Micheli
Keyword(s):  
Logic Synthesis ◽  
Physical Design ◽  
Quo Vadis

scholarly journals Combining Technology Mapping With Layout

VLSI Design ◽  
1997 ◽  
Vol 5 (2) ◽  
pp. 111-124 ◽  
Author(s):  
Massoud Pedram ◽  
Narasimha Bhat ◽  
Ernest S. Kuh
Keyword(s):  
Significant Contribution ◽  
Logic Synthesis ◽  
Integrated Approach ◽  
Physical Design ◽  
Technology Mapping ◽  
Design Representation ◽  
Interconnect Optimization ◽  
Improved Performance ◽  
Logic Structure

Due to the significant contribution of interconnect to the area and speed of today's circuits and the technological trend toward smaller and faster gates which will make the effects of interconnect even more substantial, interconnect optimization must be performed during all phases of the design. The premise of this paper is that by increasing the interaction between logic synthesis and physical design, circuits with smaller area and interconnection length, and improved performance and routability can be obtained compared to when the two processes are done separately. In particular, this paper describes an integrated approach to technology mapping and physical design which finds solutions in both domains of design representation simultaneously and interactively. The two processes are performed in lockstep: technology mapping takes advantage of detailed information about the interconnect delays and the layout cost of various optimization alternatives; placement itself is guided by the evolving logic structure and accurate path-based delay traces. Using these techniques, circuits with smaller area and higher performance have been synthesized.

scholarly journals Timing Challenges for Very Deep Sub-Micron (VDSM) IC

VLSI Design ◽  
2002 ◽  
Vol 15 (3) ◽  
pp. 557-562 ◽  
Author(s):  
Ichiang Lin ◽  
Chien-In Henry Chen
Keyword(s):  
Market Share ◽  
High Performance ◽  
Logic Synthesis ◽  
Physical Design ◽  
Timing Verification ◽  
Ic Design ◽  
Cell Library ◽  
Timing Closure ◽  
Interconnect Delay ◽  
Critical Paths

Many IC design houses failed to be market leaders because they miss the market window due to timing closure problems. Compared to half-micron designs, the amount of time spent on timing verification has greatly increased. Cell delays can be accurately estimated during logic synthesis. However, interconnect delays are unknown until the wire geometry is defined in physical design. Logic synthesis using the cell library models for interconnect delay estimates may be statistically accurate, but can not predict the delay of individual nets accurately. Delay estimates for individual nets (global nets, long wires, large fan-outs, buses), which matter most for the critical paths can be inaccurate and cause a design failure. Inaccurate timing verification causes silicon failure in shipped products that results in the loss of millions of dollars spent designing a high-performance product and potentially larger costs due to lost market share. Full-chip, sign-off verification with silicon-accuracy will allow these problems to be discovered and fixed before tape-out.

Zwölf Jahre Erfahrung in der Schweiz: Quo vadis BSE?

2002 ◽  
Vol 144 (12) ◽  
pp. 716-727 ◽  
Author(s):  
P. Schaller ◽  
H. Schwermer ◽  
D. Heim
Keyword(s):  
Quo Vadis

Ethik – Quo vadis? Anmerkungen zur Debatte um die Sterbehilfe

2017 ◽  
Vol 74 (2) ◽  
pp. 7-10
Author(s):  
Jean-Pierre Wils
Keyword(s):  
Quo Vadis

Zusammenfassung. Die Ethik kann auf eine eindrucksvolle Renaissance zurückblicken. Nachdem die grossen politischen Emanzipationsprojekte ihren Glanz in den siebziger Jahren des letzten Jahrhunderts verloren hatten und sich am Horizont neue biomedizinische Entwicklungen abzeichneten (Stichwort „Gentechnologie“), war die Ethik gefragt. In einigen Fällen hatte sie vor allem eine begrenzende, also limitierende Funktion, in anderen Fällen eine erlaubende, also eine lizenzierende Funktion. Aber seit einiger Zeit wächst das Gefühl einer gewissen Ohnmacht. Die Wandlungen im Autonomie-Begriff und die Entwicklungen in der Diskussion um die Sterbehilfe können das verdeutlichen. Ein neues Menschenbild hat sich durchgesetzt, dessen Dynamik ethisch kaum mehr zu steuern ist.

Räuber in der Wissenschaft – Quo vadis Pflegewissenschaft?

Pflege ◽  
2019 ◽  
Vol 32 (2) ◽  
pp. 73-74
Author(s):  
Ralph Möhler
Keyword(s):  
Quo Vadis
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