Lilun Zhang

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Chuanfu Xu10
Yonggang Che10
Yongxian Wang7
Jianbin Fang7
Dana A. Jacobsen6
14Chuanfu Xu
12Yonggang Che
7Yongxian Wang
7Jianbin Fang
6Wei Liu

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Test-driving Intel Xeon Phi
Based on Intel's Many Integrated Core (MIC) architecture, Intel Xeon Phi is one of the few truly many-core CPUs - featuring around 60 fairly powerful cores, two levels of caches, and graphic memory, all interconnected by a very fast ring. Given its promised ease-of-use and high performance, we took Xeon Phi out for a test drive. In this paper, we present… (More)
An Empirical Study of Intel Xeon Phi
—With at least 50 cores, Intel Xeon Phi is a true many-core architecture. Featuring fairly powerful cores, two cache levels, and very fast interconnections, the Xeon Phi can get a theoretical peak of 1000 GFLOPs and over 240 GB/s. These numbers, as well as its flexibility-it can be used both as a coprocessor or as a stand-alone processor-are very tempting… (More)
Benchmarking Intel Xeon Phi to Guide Kernel Design
No part of this series may be reproduced in any form or by any means without prior written permission of the publisher. PDS Wp Wp With a minimum of 50 cores, Intel's Xeon Phi is a true many-core architecture. Featuring fairly powerful cores, two levels of caches, and a very fast interconnection, the Xeon Phi is able to achieve theoretical peak of 1000… (More)
Parallel Preconditioned GMRES Solvers for 3-D Helmholtz Equations in Regional Non-hydrostatic Atmosphere Model
The semi-implicit time stepping scheme in non-hydrostatic compressible atmosphere model makes it necessary to solve 3-D helmholtz equations, which are complicated with variable coefficients and cross derivative terms. Since the ill-conditioned matrix is nonsymmetric, preconditioned GMRES Krylov iterative algorithm is adopted. Based on PETSc and Hypre… (More)
Microarchitectural performance comparison of Intel Knights Corner and Intel Sandy Bridge with CFD applications
This paper comparatively evaluates the microarchitectural performance of two representative Computational Fluid Dynamics (CFD) applications on the Intel Many Integrated Core (MIC) product, the Intel Knights Corner (KNC) coprocessor, and the Intel Sand Bridge (SNB) processor. Performance Monitoring Unit-based measurement method is used, along with a… (More)
Balancing CPU-GPU Collaborative High-Order CFD Simulations on the Tianhe-1A Supercomputer
HOSTA is an in-house high-order CFD software that can simulate complex flows with complex geometries. Large scale high-order CFD simulations using HOSTA require massive HPC resources, thus motivating us to port it onto modern GPU accelerated supercomputers like Tianhe-1A. To achieve a greater speedup and fully tap the potential of Tianhe-1A, we collaborate… (More)
Parallel computing for implicit scheme of numerical simulation for laser propulsion
Implicit scheme is widely used in CFD problems for its high precision and large step time. The integral scheme implemented in numerical simulation for laser propulsion is implicit one. As to its computing complexity, the simulation takes too much time to complete, so parallel computing technology is needed here. In this paper, the ADI scheme is researched… (More)