针对时钟诱发OCV的软聚类驱动触发器放置

Dimitrios Mangiras, Pavlos M. Mattheakis, Pierre-Olivier Ribet, G. Dimitrakopoulos
{"title":"针对时钟诱发OCV的软聚类驱动触发器放置","authors":"Dimitrios Mangiras, Pavlos M. Mattheakis, Pierre-Olivier Ribet, G. Dimitrakopoulos","doi":"10.1145/3372780.3375564","DOIUrl":null,"url":null,"abstract":"On-Chip Variation (OCV) in advanced technology nodes introduces delay uncertainties that may cause timing violations. This problem drastically affects the clock tree that, besides the growing design complexity, needs to be appropriately synthesized to tackle the increased variability effects. To reduce the magnitude of the clock-induced OCV, we incrementally relocate the flip-flops and the clock gaters in a bottom-up manner to implicitly guide the clock tree synthesis engine to produce clock trees with increased common clock tree paths. The relocation of the clock elements is performed using a soft clustering approach that is orthogonal to the clock tree synthesis method used. The clock elements are repeatedly relocated and incrementally re-clustered, thus gradually forming better clusters and settling to more appropriate positions to increase the common paths of the clock tree. This behavior is verified by applying the proposed method in industrial designs, resulting in clock trees which are more resilient to process variations, while exhibiting improved overall timing.","PeriodicalId":151741,"journal":{"name":"Proceedings of the 2020 International Symposium on Physical Design","volume":"95 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Soft-Clustering Driven Flip-flop Placement Targeting Clock-induced OCV\",\"authors\":\"Dimitrios Mangiras, Pavlos M. Mattheakis, Pierre-Olivier Ribet, G. Dimitrakopoulos\",\"doi\":\"10.1145/3372780.3375564\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"On-Chip Variation (OCV) in advanced technology nodes introduces delay uncertainties that may cause timing violations. This problem drastically affects the clock tree that, besides the growing design complexity, needs to be appropriately synthesized to tackle the increased variability effects. To reduce the magnitude of the clock-induced OCV, we incrementally relocate the flip-flops and the clock gaters in a bottom-up manner to implicitly guide the clock tree synthesis engine to produce clock trees with increased common clock tree paths. The relocation of the clock elements is performed using a soft clustering approach that is orthogonal to the clock tree synthesis method used. The clock elements are repeatedly relocated and incrementally re-clustered, thus gradually forming better clusters and settling to more appropriate positions to increase the common paths of the clock tree. This behavior is verified by applying the proposed method in industrial designs, resulting in clock trees which are more resilient to process variations, while exhibiting improved overall timing.\",\"PeriodicalId\":151741,\"journal\":{\"name\":\"Proceedings of the 2020 International Symposium on Physical Design\",\"volume\":\"95 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-03-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 2020 International Symposium on Physical Design\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1145/3372780.3375564\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 2020 International Symposium on Physical Design","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/3372780.3375564","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

摘要

先进技术节点中的片上变异(OCV)引入了延迟不确定性,可能导致时序违规。这个问题极大地影响了时钟树,除了增加设计复杂性外,还需要适当地合成以处理增加的可变性影响。为了降低时钟诱发的OCV的幅度,我们以自下而上的方式逐步重新定位触发器和时钟门,以隐式地引导时钟树合成引擎产生具有更多公共时钟树路径的时钟树。时钟元素的重新定位使用与时钟树合成方法正交的软聚类方法进行。时钟元素被反复重新定位并逐渐重新聚类,从而逐渐形成更好的簇,并定居到更合适的位置,从而增加时钟树的公共路径。通过在工业设计中应用所提出的方法,可以验证这种行为,从而产生对工艺变化更具弹性的时钟树,同时显示出改进的整体时序。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Soft-Clustering Driven Flip-flop Placement Targeting Clock-induced OCV
On-Chip Variation (OCV) in advanced technology nodes introduces delay uncertainties that may cause timing violations. This problem drastically affects the clock tree that, besides the growing design complexity, needs to be appropriately synthesized to tackle the increased variability effects. To reduce the magnitude of the clock-induced OCV, we incrementally relocate the flip-flops and the clock gaters in a bottom-up manner to implicitly guide the clock tree synthesis engine to produce clock trees with increased common clock tree paths. The relocation of the clock elements is performed using a soft clustering approach that is orthogonal to the clock tree synthesis method used. The clock elements are repeatedly relocated and incrementally re-clustered, thus gradually forming better clusters and settling to more appropriate positions to increase the common paths of the clock tree. This behavior is verified by applying the proposed method in industrial designs, resulting in clock trees which are more resilient to process variations, while exhibiting improved overall timing.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信