Hao Zhuang, Ph.D.

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Hao Zhuang
Ph.D. in Computer Science
University of California, San Diego, CA, USA.
e-mail: zhuang.howard [at] gmail [dot] com

google scholar | linkedin


I earned my Ph.D. degree in Computer Science from University of California, San Deigo, CA, USA (UCSD) in 2016 after 3-year full-time PhD training and 1-year part-time training while I was a software engineer at ANSYS, Inc. I co-authored 15 peer-reviewed papers during this period and had around 210 (total) paper citations by the graduation. I am generally interested in the fundamental algorithms behind computational mathematics, numerical algorithms, high-performance computing (HPC), and distributed computing systems for simulation, optimization, signal processing, large-scale dynamical systems analysis, reasoning and ranking. My graduate research projects included numerical algorithms, matrix computations, and stochastic numerical solvers, with the applications in the analysis of large-scale dynamical systems, computer-aided design (CAD), and electronic design automation (EDA) for building computer chips. Some of the techniques I developed with my colleagues during my graduate research (both my master and PhD) had been adopted in the industry. My research advisors were Professors C. K. Cheng and Wenjian Yu.

In addition, at school we strongly believe the education and technologies play the essential role to navigate our society. Beyond building computation engines for design automation tools of VLSI chips above, I also helped some related projects in the spare time of my PhD study, which created online collaboration and personalized learning systems in order to make education massive and accessible to the world. I worked with (computational) linguists, teachers, and professors. We built those systems with the help of the technologies from natural language processing, computational linguistics, machine learning, numerical algorithms, and matrix computation.

Now, I am a Senior Software Developer at Apache Design (apache-da.com, originally a computer-aided design start-up at Silicon Valley, providing the industrial standard of VLSI chip power sign-off software Apache RedHawk and accquired by ANSYS, Inc.) of ANSYS to commercialize my research at graduate schools. (The products of Apache Design have been used for power analysis and verification of tape-outs of modern low power CPU, GPU, and ASIC, which are used by different purposes of computing, such as general logic operations, deep learning, big data processing, data center traffic, etc.) Since June 2015, I write software with my Apache R&D colleagues to build high performance computing and distributed computation infrastructure, large-scale matrix computation algorithms, machine learning systems, and big data applications. For simulation solver, I mainly work with Dr. Steven P. McCormick (MIT EECS PhD’89), who is one of pioneers in VLSI model order reduction research. I am also co-leading the simulation-based machine learning research (numerical solver part). Besides, it is my privilege to work with the teams consist of legends in the area of design automation algorithms, such as the researcher of AWE, the creators of MIT FastCap, CMU PRIMA, UT RICE, Synopsys PrimeTime, and Apache Redhawk. Before that I worked at Synopsys, Inc., designed graph partitioning algorithms and multi-threaded programs during that summer internship. The algorithm in that summer scaled up the matrix solver for full-chip power network analysis with over billion graph nodes.

Selected Publications [Full List] [Google Scholar Citations]

Selected Patent [Full List]



  • Qualcomm FMA Fellowship (2013-2014): one of the four recipients [award].

  • Charles Lee Powell Fellowship (2012-2015): for supporting outstanding PhD engineering students.

  • Peking University Wu-Si Scholarship (2011).

Industrial Experience [Details]

Academic Experience [Details]

Selected Talks [Full List]

  • “Matrix Exponential Integration in Time-Domain Analysis of Circuit Simulation,” at Department of Electrical and Electronics Engineering, The University of Hong Kong, Hong Kong, Oct. 2015

  • “Algorithms for Dynamic Power Grid Simulation Using Matrix Exponentials,” at Ansys Inc., San Jose, Sept. 2015.


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