Quinn Johnson

Oakland, California, United States
869 followers 500+ connections

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About

Building the toolkit ML teams need to ship awesome products. Startups are fun, let me…

Activity

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Experience

  • Aquarium Learning Graphic

    Aquarium Learning

    San Francisco Bay Area

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    San Francisco Bay Area

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    San Francisco Bay Area

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    San Francisco, CA

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    Oakland, CA

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    Palo Alto, CA

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    Berkeley, CA

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    Mountain View, CA

Education

Courses

  • Algorithms

    CS170

  • Data Structures

    CS61B

  • Database Theory

    CS186

  • Discrete Mathematics and Probability Theory

    CS70

  • Engineering Parallel Software for Performance

    CS194-15

  • Great Ideas in Computer Architecture (Machine Structures)

    CS61C

  • Parallel Computing (Graduate Class)

    CS267

  • Signals and Systems

    EE20N

Projects

  • DeCal Program - Democratic Education at Cal

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    Co-facilitator: developed and instructed a 2 unit semester course with 2 other students and a faculty sponsor; responsible for syllabus, lectures, grading, interacting with students, and facilitating discussion

    Other creators

  • Efficient Implementations of Distributed Algorithms

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    As part of a graduate class on parallel performance programming, I implemented several efficient computational algorithms on NERSC's petaflop "Hopper" super computing cluster.

    • Implemented matrix multiplication of double precision matrices that averaged 80% of the performance of Cray's vendor optimized library. Used SSE SIMD intrinsics and OpenMP parallelism.

    • Implemented a toy particle collision simulator in the following parallel paradigms: Shared Memory (OpenMP), Distributed…

    As part of a graduate class on parallel performance programming, I implemented several efficient computational algorithms on NERSC's petaflop "Hopper" super computing cluster.

    • Implemented matrix multiplication of double precision matrices that averaged 80% of the performance of Cray's vendor optimized library. Used SSE SIMD intrinsics and OpenMP parallelism.

    • Implemented a toy particle collision simulator in the following parallel paradigms: Shared Memory (OpenMP), Distributed Memory (MPI), and GPU SIMD (CUDA).

    • Implemented the 0-1 knapsack algorithm in a "partitioned global address space" environment using UPC.

  • Histogram of Oriented Gradients

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    Implemented and optimized Histogram of Oriented Gradients (HOG) feature extraction on NVidia GPU targets. (Presented poster at UC Berkeley's ASPIRE Winter 2014 Research Retreat).

  • Java Relational Database

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    Semester long project based on MIT's SimpleDB interface.(http://db.csail.mit.edu/6.830/simpledb/doc/simpledb/package-summary.html).

    Implemented a transactional, ACID compliant relational database in Java. Supports concurrency control, multiple join methods, and automatic query optimization.

  • Parallel All-Pairs Shortest Paths

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    A parallel formulation and implementation of the recently proposed quadratic algorithm for solving the “All-Pairs Shortest Paths” problem by Peres et al.

Honors & Awards

  • Jim and Donna Gray Scholarship

    UC Berkeley EECS Department

Organizations

  • Eta Kappa Nu (EECS Honor Society)

    Industrial Relations Committee

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