This paper presents a new technique to lower the computational cost of the electrothermal (ET) analysis of a large on-chip power distribution network. It is based on a node reduction strategy following a preliminary efficient steady-state solution of the ET problem. After a proper classification of nodes according to temperature and voltage drop ranges, a reduced network is then produced by means of clustering and topological network transformations, and is available for any static/dynamic analysis. Due to the achievable reduction ratios, it possible to lower by order of magnitudes the computational cost at very good accuracies. A case-study is provided where a power grid of 4 millions of nodes is reduced by a factor of 180 (electrical network) and 500 (thermal network)
A node clustering reduction scheme for power grids electrothermal analysis / Magnani, Alessandro; DE MAGISTRIS, Massimiliano; Maffucci, A.; Todri Sanial, A.. - (2015), pp. 1-4. (Intervento presentato al convegno 19th IEEE Workshop on Signal and Power Integrity, SPI 2015 tenutosi a Seminaris CampusHotel, Takustrasse 39, deu nel 2015) [10.1109/SaPIW.2015.7237399].
A node clustering reduction scheme for power grids electrothermal analysis
MAGNANI, ALESSANDRO;DE MAGISTRIS, MASSIMILIANO;
2015
Abstract
This paper presents a new technique to lower the computational cost of the electrothermal (ET) analysis of a large on-chip power distribution network. It is based on a node reduction strategy following a preliminary efficient steady-state solution of the ET problem. After a proper classification of nodes according to temperature and voltage drop ranges, a reduced network is then produced by means of clustering and topological network transformations, and is available for any static/dynamic analysis. Due to the achievable reduction ratios, it possible to lower by order of magnitudes the computational cost at very good accuracies. A case-study is provided where a power grid of 4 millions of nodes is reduced by a factor of 180 (electrical network) and 500 (thermal network)I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
