Search

Your search keyword '"Sun, Xian-He"' showing total 946 results
Start Over Author "Sun, Xian-He" Publication Year Range Last 50 years

Refine your results

more »

more »

more »

more »
946 results on '"Sun, Xian-He"'

1. TunIO: An AI-powered Framework for Optimizing HPC I/O

Author

Rajesh, Neeraj, Bateman, Keith, Bez, Jean Luca, Byna, Suren, Kougkas, Anthony, and Sun, Xian-He

Subjects
Distributed Computing and Systems Software, Information and Computing Sciences, AI-powered I/O tuning, storage stack tuning, autotuning, source code transformations, and I/O performance optimization
Abstract

I/O operations are a known performance bottleneck of HPC applications. To achieve good performance, users often employ an iterative multistage tuning process to find an optimal I/O stack configuration. However, an I/O stack contains multiple layers, such as high-level I/O libraries, I/O middleware, and parallel file systems, and each layer has many parameters. These parameters and layers are entangled and influenced by each other. The tuning process is time-consuming and complex. In this work, we present TunIO, an AI-powered I/O tuning framework that implements several techniques to balance the tuning cost and performance gain, including tuning the high-impact parameters first. Furthermore, TunIO analyzes the application source code to extract its I/O kernel while retaining all statements necessary to perform I/O. It utilizes a smart selection of high-impact configuration parameters of the given tuning objective. Finally, it uses a novel Reinforcement Learning (RL)-driven early stopping mechanism to balance the cost and performance gain. Experimental results show that TunIO leads to a reduction of up to ≈73% in tuning time while achieving the same performance gain when compared to H5Tuner. It achieves a significant performance gain/cost of 208.4 MBps/min (I/O bandwidth for each minute spent in tuning) over existing approaches under our testing.

Published
2024

3. Survey the storage systems used in HPC and BDA ecosystems

Author

Shah, Priyam, Ye, Jie, and Sun, Xian-He

Subjects
Computer Science - Distributed, Parallel, and Cluster Computing
Abstract

The advancement in HPC and BDA ecosystem demands a better understanding of the storage systems to plan effective solutions. To make applications access data more efficiently for computation, HPC and BDA ecosystems adopt different storage systems. Each storage system has its pros and cons. Therefore, it is worthwhile and interesting to explore the storage systems used in HPC and BDA respectively. Also, it's inquisitive to understand how such storage systems can handle data consistency and fault tolerance at a massive scale. In this paper, we're surveying four storage systems Lustre, Ceph, HDFS, and CockroachDB. Lustre and HDFS are some of the most prominent file systems in HPC and BDA ecosystem. Ceph is an upcoming filesystem and is being used by supercomputers. CockroachDB is based on NewSQL systems a technique that is being used in the industry for BDA applications. The study helps us to understand the underlying architecture of these storage systems and the building blocks used to create them. The protocols and mechanisms used for data storage, data access, data consistency, fault tolerance, and recovery from failover are also overviewed. The comparative study will help system designers to understand the key features and architectural goals of these storage systems to select better storage system solutions., Comment: 13 pages, 10 figures, 7 tables

Published
2021

5. CADS: Core-Aware Dynamic Scheduler for Multicore Memory Controllers

Author

Sanchez, Eduardo Olmedo and Sun, Xian-He

Subjects
Computer Science - Hardware Architecture, Computer Science - Machine Learning
Abstract

Memory controller scheduling is crucial in multicore processors, where DRAM bandwidth is shared. Since increased number of requests from multiple cores of processors becomes a source of bottleneck, scheduling the requests efficiently is necessary to utilize all the computing power these processors offer. However, current multicore processors are using traditional memory controllers, which are designed for single-core processors. They are unable to adapt to changing characteristics of memory workloads that run simultaneously on multiple cores. Existing schedulers may disrupt locality and bank parallelism among data requests coming from different cores. Hence, novel memory controllers that consider and adapt to the memory access characteristics, and share memory resources efficiently and fairly are necessary. We introduce Core-Aware Dynamic Scheduler (CADS) for multicore memory controller. CADS uses Reinforcement Learning (RL) to alter its scheduling strategy dynamically at runtime. Our scheduler utilizes locality among data requests from multiple cores and exploits parallelism in accessing multiple banks of DRAM. CADS is also able to share the DRAM while guaranteeing fairness to all cores accessing memory. Using CADS policy, we achieve 20% better cycles per instruction (CPI) in running memory intensive and compute intensive PARSEC parallel benchmarks simultaneously, and 16% better CPI with SPEC 2006 benchmarks.

Published
2019

12. Preface

Author

Sun, Xian-He, Li, Dong, Chen, Wen-Guang, Li, Tao, Shu, Ji-Wu, Wu, Bo, Xiong, Jin, Xue, Jinging, Zhang, Feng, Zhai, Ji-Dong, and Zhao, Zhiia

Published
2021
Full Text
View/download PDF

13. Utilizing Concurrency: A New Theory for Memory Wall

Author

Sun, Xian-He, Liu, Yu-Hang, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Ding, Chen, editor, Criswell, John, editor, and Wu, Peng, editor

Published
2017
Full Text
View/download PDF

15. Performance-Aware Data Placement in Hybrid Parallel File Systems

Author

He, Shuibing, Sun, Xian-He, Feng, Bo, Feng, Kun, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Sun, Xian-he, editor, Qu, Wenyu, editor, Stojmenovic, Ivan, editor, Zhou, Wanlei, editor, Li, Zhiyang, editor, Guo, Hua, editor, Min, Geyong, editor, Yang, Tingting, editor, Wu, Yulei, editor, and Liu, Lei, editor

Published
2014
Full Text
View/download PDF

25. Automatic Memory Optimizations for Improving MPI Derived Datatype Performance

Author

Byna, Surendra, Sun, Xian-He, Thakur, Rajeev, Gropp, William, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Mohr, Bernd, editor, Träff, Jesper Larsson, editor, Worringen, Joachim, editor, and Dongarra, Jack, editor

Published
2006
Full Text
View/download PDF

26. Incorporating Data Movement into Grid Task Scheduling

Author

He, Xiaoshan, Sun, Xian-He, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Zhuge, Hai, editor, and Fox, Geoffrey C., editor

Published
2005
Full Text
View/download PDF

32. SCALA: A framework for performance evaluation of scalable computing

Author

Sun, Xian-He, Pantano, Mario, Fahringer, Thomas, Zhan, Zhaohua, Goos, Gerhard, editor, Hartmanis, Juris, editor, van Leeuwen, Jan, editor, Rolim, José, editor, Mueller, Frank, editor, Zomaya, Albert Y., editor, Ercal, Fikret, editor, Olariu, Stephan, editor, Ravindran, Binoy, editor, Gustafsson, Jan, editor, Takada, Hiroaki, editor, Olsson, Ron, editor, Kale, Laxmikant V., editor, Beckman, Pete, editor, Haines, Matthew, editor, ElGindy, Hossam, editor, Caromel, Denis, editor, Chaumette, Serge, editor, Fox, Geoffrey, editor, Pan, Yi, editor, Li, Keqin, editor, Yang, Tao, editor, Chiola, G., editor, Conte, G., editor, Mancini, L. V., editor, Méry, Domenique, editor, Sanders, Beverly, editor, Bhatt, Devesh, editor, and Prasanna, Viktor, editor

Published
1999
Full Text
View/download PDF

46. Apollo

Author

Rajesh, Neeraj, primary, Devarajan, Hariharan, additional, Garcia, Jaime Cernuda, additional, Bateman, Keith, additional, Logan, Luke, additional, Ye, Jie, additional, Kougkas, Anthony, additional, and Sun, Xian-He, additional

Published
2021
Full Text
View/download PDF

47. AUTO-PRUNE

Author

Yang, Siling, primary, Chen, Weijian, additional, Zhang, Xuechen, additional, He, Shuibing, additional, Yin, Yanlong, additional, and Sun, Xian-He, additional

Published
2021
Full Text
View/download PDF

50. Introduction

Author

Fahringer, Thomas, Iosup, Alexandru, Bubak, Marian, Ripeanu, Matei, Sun, Xian-He, Truong, Hong-Linh, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Sips, Henk, editor, Epema, Dick, editor, and Lin, Hai-Xiang, editor

Published
2009
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results