PPT-Effects of Contention on Message Latencies in Large Supercomputers

Abhinav S Bhatele and Laxmikant V Kale ACM Research Competition SC 08 IS TOPOLOGY IMPORTANT AGAIN Outline November 19th 2008 2 Why should we consider topology aware mapping for optimizing performance. Abhinav S Bhatele and Laxmikant V Kale. Parallel Programming Laboratory, UIUC. IS. TOPOLOGY IMPORTANT AGAIN?. E-mail: bhatele, kale @ illinois.edu. Webpage: http://charm.cs.uiuc.edu. Outline. May 29th, 2009. of RT Tasks onto a . TilePro. 64 Core Processor. 1 Background Introduction = why. 2 Goal. 3 What . 4 How. 5 Experimental Result. 6 Advantage & . Limitaion. 7 Significance & Improvement. Lei Cui . -Specific, Long-Latency Activity in the Olfactory Bulb Granule Cell Network. Vikrant . Kapoor. and Nathaniel N. Urban. Department of Biological Sciences and Center for the Neural Basis of Cognition, Carnegie Mellon University. Graph . Processing . . with Distributed Immutable View. Rong Chen. +. , . Xin. Ding. +. , . Peng. Wang. +. , Haibo Chen. +. , . Binyu . Zang. +. and Haibing Guan. *. Institute of Parallel and Distributed Systems. MATTHEW 12:34. Contention and Strife. Hebrew . RIB. physical struggle . Ex. 21:18. Verbal contention . Judges 6:32 . Waters of . Me. RIB. ah. . Ex. 17:7. Legal disputes . Deut. 25:1, Prov. 25:8-10. [Think – 2 minutes]. . [Pair – Tell each other what you think]. . . . [share]. [contention]. The . main contention . states the central point or argument of a piece of text or speech. Questions to consider. What is the central message the author is trying to convey to his/her audience?. What is the main point the author is trying to convince me of?. 1. Look at the title.. What is the message it is conveying?. Parallel Computing. CIS . 410/. 510. Department of Computer and Information Science. Outline. Quick review of hardware architectures. Running on supercomputers. Message Passing. MPI. 2. Introduction to Parallel Computing, University of Oregon, IPCC. Dave Strayer, Cary Institute of Ecosystem Studies. Conclusions. Like other threats being discussed here. Biological invasions have large, varied effects on large-river ecosystems and the services they provide to people. Définition. La contention a pour objectif de limiter les capacités de mobilisation d’un individu de manière à le sécuriser ou protéger son environnement. Recouvrant différents aspects, elle doit néanmoins rester exceptionnelle et s’associer à d’autres prises en charges thérapeutiques. . Définition . Etymologie : vient du latin « . contentio.  » qui signifie « lutte . ».  . Selon Agence National d’Accréditation et d’évaluation en santé (ANAES) . :. «.  La contention physique et l’utilisation de tout moyens, méthodes, matériels ou vêtements qui empêchent ou limitent les capacités de mobilisation volontaire de tout ou une partie du corps dans le seul but d’obtenir la sécurité pour un patient qui présente un comportement estimé dangereux ou mal adapté. ». Low Contention Mapping of RT Tasks onto a TilePro 64 Core Processor 1 Background Introduction = why 2 Goal 3 What 4 How 5 Experimental Result 6 Advantage & Limitaion 7 Significance & Improvement . with Distributed Immutable View. Rong Chen. +. , . Xin. Ding. +. , . Peng. Wang. +. , Haibo Chen. +. , . Binyu . Zang. +. and Haibing Guan. *. Institute of Parallel and Distributed Systems. +. Gengbin. . Zheng. , Esteban . Meneses. , . Abhinav. . Bhatele. and . Laxmikant. V. Kale. Parallel Programming Lab. University of Illinois at Urbana Champaign. Motivations. Load balancing is key to scalability on very large supercomputers.