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Events

  • Apr
    12

    CS Seminar: Designing efficient and scalable cache management systems (Juncheng Yang)

    Department of Computer Science (CS)

    12:00 PM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    Friday / CS Seminar
    April 12th / 12:00 PM
    In Person / Mudd 3514

    Speaker
    Juncheng Yang, Carnegie Mellon University

    Talk Title
    Designing efficient and scalable cache management systems

    Abstract
    Software-managed caches have been ubiquitously deployed in today's system infrastructure. From personal devices to servers on the edge and the cloud, these caches speed up data access, reduce data movement, and avoid repeated computation. However, they consume a huge amount of resources, i.e., DRAM and CPUs.

    In this talk, I will discuss how to design efficient and scalable cache systems. In the first part, I will demonstrate that the efficiency of a key-value cache is not only determined by the eviction algorithm but also by other components, e.g., storage layout and expiration design. I will then describe how I designed Segcache to reduce memory footprint by up to 60% and increase throughput by 8x compared to state-of-the-art systems. Segcache has been adopted for production at Twitter and Momento.
    In the second part, I will introduce a surprising new finding from our largest-scale eviction algorithm study: FIFO queues are all we need for cache eviction. I will then describe S3-FIFO, a new cache eviction algorithm that is simpler, more scalable, and more efficient than state-of-the-art algorithms. S3-FIFO has been adopted for production at Google, VMWare, Redpanda, and several others.
    Finally, I will describe my future work on building efficient, performant, and robust data systems.

    Biography
    Juncheng Yang (https://junchengyang.com) is a 6th-year Ph.D. student in the Computer Science Department at Carnegie Mellon University. His research interests broadly cover the efficiency, performance, reliability, and sustainability of large-scale data systems.

    Juncheng's works have received best paper awards at NSDI'21, SOSP'21, and SYSTOR'16. His OSDI'20 paper was recognized as one of the best storage papers at the conference and invited to ACM TOS'21. Juncheng received a Facebook Ph.D. Fellowship in 2020, was recognized as a Rising Star in machine learning and systems in 2023, and a Google Cloud Research Innovator in 2023.

    His work, Segcache, has been adopted for production at Twitter and Momento. The two eviction algorithms he designed (S3-FIFO, SIEVE) have been adopted for production at Google, VMware, Cloudflare, Redpanda, and many others with over 20 open-source libraries available on GitHub. Moreover, the open-source cache simulation library he created, libCacheSim, has been used by almost 100 research institutes and companies.

    Research Area/Interests
    Computer systems

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    TIME Friday, April 12, 2024 at 12:00 PM - 1:00 PM

    LOCATION 3514, Mudd Hall ( formerly Seeley G. Mudd Library)    map it

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • Apr
    15

    CS Seminar: Simpler Machine Learning Models for a Complicated World (Cynthia Rudin)

    Department of Computer Science (CS)

    12:15 PM KGH 1120, Kellogg Global Hub

    EVENT DETAILS

    TIME Monday, April 15, 2024 at 12:15 PM - 1:15 PM

    LOCATION KGH 1120, Kellogg Global Hub    map it

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • Apr
    19

    CS Seminar: Hardware-Aware Efficient Primitives for Machine Learning (Dan Fu)

    Department of Computer Science (CS)

    12:00 PM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    TIME Friday, April 19, 2024 at 12:00 PM - 1:00 PM

    LOCATION 3514, Mudd Hall ( formerly Seeley G. Mudd Library)    map it

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • Apr
    24

    CS Seminar: AI Powered Movement Analysis, Big Rehabilitation Data and a Path to Precision Rehabilitation (R. James Cotton)

    Department of Computer Science (CS)

    12:00 PM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    TIME Wednesday, April 24, 2024 at 12:00 PM - 1:00 PM

    LOCATION 3514, Mudd Hall ( formerly Seeley G. Mudd Library)    map it

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • Apr
    25

    TGI Bagel Thursday

    Department of Computer Science (CS)

    9:00 AM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    TIME Thursday, April 25, 2024 at 9:00 AM - 11:00 AM

    LOCATION 3514, Mudd Hall ( formerly Seeley G. Mudd Library)    map it

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • Apr
    29

    CS Seminar: Kaize Ding

    Department of Computer Science (CS)

    12:00 PM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    TIME Monday, April 29, 2024 at 12:00 PM - 1:00 PM

    LOCATION 3514, Mudd Hall ( formerly Seeley G. Mudd Library)    map it

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • May
    1

    CS Seminar: Tong Zhang

    Department of Computer Science (CS)

    12:00 PM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    TIME Wednesday, May 1, 2024 at 12:00 PM - 1:00 PM

    LOCATION 3514, Mudd Hall ( formerly Seeley G. Mudd Library)    map it

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • May
    30

    TGI Bagel Thursday

    Department of Computer Science (CS)

    9:00 AM 3514, Mudd Hall ( formerly Seeley G. Mudd Library)

    EVENT DETAILS

    TIME Thursday, May 30, 2024 at 9:00 AM - 11:00 AM

    LOCATION 3514, Mudd Hall ( formerly Seeley G. Mudd Library)    map it

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    CONTACT Wynante R Charles    wynante.charles@northwestern.edu EMAIL

    CALENDAR Department of Computer Science (CS)

  • Jun
    10

    Northwestern Engineering PhD Hooding and Master's Degree Recognition Ceremony

    McCormick School of Engineering and Applied Science

    9:00 AM Welsh-Ryan Arena

    EVENT DETAILSmore info

    TIME Monday, June 10, 2024 at 9:00 AM - 11:00 AM

    LOCATION Welsh-Ryan Arena   

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    CONTACT Amy Pokrass    amy.pokrass@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science

  • Jun
    10

    Northwestern Engineering Undergraduate Convocation

    McCormick School of Engineering and Applied Science

    2:00 PM Welsh-Ryan Arena

    EVENT DETAILSmore info

    TIME Monday, June 10, 2024 at 2:00 PM - 4:00 PM

    LOCATION Welsh-Ryan Arena   

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    CONTACT Amy Pokrass    amy.pokrass@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science