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亚博取款心丈秒到账:英国华威大学何黎刚副教授学术报告

来源: 点击: 时间:2019年04月19日 10:53

报告题目:WolfGraph: Edge-Centric graph processing on GPUs

报告时间:2019年4月22日(周一)下午16:00

报告地点:计算机楼206会议室

报告人:何黎刚副教授

报告简介:

There is significant interest nowadays in developing the frameworks for parallelizing the processing of large graphs such as social networks, Web graphs, etc. The work has been proposed to parallelize the graph processing on clusters (distributed memory), multicore machines (shared memory) and GPU devices. Most existing research on GPU-based graph processing employs the vertex-centric processing model and the Compressed Sparse Row (CSR) form to store and process a graph. However, they suffer from irregular memory access and load imbalance in GPU, which hampers the full exploit of GPU performance. In this talk, I will present WolfGraph, a GPU-based graph processing framework that overcomes the above problems. WolfGraph adopts the edge-centric processing, which iterates over the edges rather than vertices. The data structure and graph partition in WolfGraph are carefully crafted so as to minimize the graph pre-processing and allow the fully coalesced memory access. WolfGraph fully utilizes the GPU power by processing all edges in parallel. We also developed a new method, called Concatenated Edge List (CEL) to process a graph that is bigger than the global memory of GPU. WolfGraph allows the users to define their own graph-processing methods and plug them into the WolfGraph framework.

报告人简介:

Ligang He received the Ph.D degree in Computer Science at the University of Warwick, United Kingdom, and worked as a post-doctoral researcher at the University of Cambridge, UK. From 2006, he worked in the Department of Computer Science at the University of Warwick as Assistant Professor and then as Associate Professor. His research interests focus on parallel and distributed processing, high performance computing, cloud computing. He has published more than 100 papers in international conferences and journals, such as IEEE Transactions on Parallel and Distributed Systems, IPDPS, CCGrid, MASCOTS. He has been a co-chair or a member of the program committee for a number of international conferences, and been the reviewers for many international journals.

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