PPT-Parallel Scalability

Osman Sarood How faster can we run Suppose we have this serial problem with 12 tasks How fast can we run given 3 processors Running in parallel Execution time reduces from 12 secs to 4 . Unlike sequential algorithms parallel algorithms cannot be analyzed very well in isolation One of our primary measures of goodness of a parallel system will be its scalability Scalability is the ability of a parallel system to take advantage of incr on . Multicores. LokeshGidra. , . Gaël. Thomas, . JulienSopena. and Marc Shapiro. INRIA/University of Paris 6. 14/20 most popular languages have GC. but GC doesn’t scale on . multicore. hardware. Performance Theory - 1. Parallel Computing. CIS . 410/. 510. Department of Computer and Information Science. Outline. Performance scalability. Analytical performance measures. Amdahl. ’. s. law and Gustafson-. Ippokratis Pandis. CIDR 2009 - Gong Show. Scalability on CMP. 2. Sun Niagara I - 32 HW Contexts. Update intensive workload. No database lock conflicts. Linear (ideal) scaling. Scalability. problems. Geo-Simulations. Saulo Henrique Cabral Silva. Tiago Garcia de Senna Carneiro*. TerraLAB. – . Laboratory. for . Earh. System . Modeling. . and. . Simulation. Computer. . Science. . Department. define scalability scalability Let time(n,x) be the time required by an n-processor system to execute a pro- gram to solve a of problem of size 2 x. The speedup on a problem of size x with n processor Morten . Kragelund. Holt. Jens Johansen. Gerth. . Stølting. . Brodal. 1. Aarhus University. Introduction. Trees are used in many branches of science.. Phylogenetic. trees are especially used in biology and bioinformatics.. Evaluation. . Sequential: runtime (execution time). . Ts. =T (. InputSize. ). . Parallel: runtime (. s. tart-->last PE ends). . Tp. =T (. InputSize,p,architecture. ). . Note: Cannot be Evaluated in Isolation from the Parallel architecture. Sukumar. . Chakravarthy. src@metacomptech.com. www.metacomptech.com. 1. Scope of Presentation. Range of aerospace CFD and related applications. Hierarchy of simulation approaches. Hierarchy of algorithmic approaches. Andrew A. Chien. William Eckhardt Professor of Computer Science, The University of Chicago. Senior Scientist, Argonne National Laboratory. IRIS-HEP Kickoff. September 7, 2018. Traditional Software Scalability. S.H. . Yeganeh. , A. . Tootoonchian. , Y. . Ganjali. University of . Tronto. IEEE Communication Magazine. 1. Motivations. There have always been concerns about performance and scalability about SDN. Argue that there is no inherent bottleneck to SDN... &. Caching. Noah Mendelsohn. Tufts University. Email: . noah@cs.tufts.edu. Web: http://www.cs.tufts.edu/~noah. COMP 150-IDS: Internet Scale Distributed Systems . (Spring 2015). 2. Goals. Explore some general principles of performance,... Huawei. Liyan. Gong, . Fengwei . Qin . @China Mobile. Guangming. Yang @China Telecom. James Guichard @. Futurewei. Gyan Mishra . @Verizon. Tarek Saad @Cisco. Vishnu Beeram @Juniper. Scalability Considerations for . Performance of Computer System. Various factors. Depends on. Scalability: . Computer Performance . Number of processors used. Measuring performance of parallel computer architecture for large-scale applications require very good understanding of...