Cliff Click

Registered user since Fri 5 Sep 2014

Name:Cliff Click

Cliff Click was the CTO of Neurensic, and CTO and Co-Founder of (formerly 0xdata), a firm dedicated to creating a new way to think about web-scale data storage and real-time analytics. I wrote my first compiler when I was 15 (Pascal to TRS Z-80!), although my most famous compiler is the HotSpot Server Compiler (the Sea of Nodes IR). I helped Azul Systems build an 864 core pure-Java mainframe that keeps GC pauses on 500Gb heaps to under 10ms, and worked on all aspects of that JVM. Before that I worked on HotSpot at Sun Microsystems, and am at least partially responsible for bringing Java into the mainstream.

Previously I was with Motorola where I helped deliver industry leading SpecInt2000 scores on PowerPC chips, and before that I researched compiler technology at HP Labs. I am invited to speak regularly at industry and academic conferences including JavaOne, JVM, ECOOP and VEE; I’ve served on the Program Committee of many conferences (including PLDI and OOPSLA); and have published many papers about HotSpot technology. I hold a PhD in Computer Science from Rice University and about 20 patents.

Country:United States
Personal website:
Research interests:Virtual machines, compilers, data analytics


REBASE 2021 Presenter of AA - Yet Another New Language within the REBASE-track
SPLASH 2020 Author of Tales from the Frontlines: Startup War Stories within the REBASE-track
ECOOP and ISSTA 2018 Mentor in Mentors within the Summer School-track
Speaker of Writing Virtual Machines for fun and profit within the Summer School-track
Speaker in Speakers within the Summer School-track
WoSSCA 2018 Committee Member in Program Committee within the WoSSCA 2018-track
CurryOn 2018 Author of Lessons from a Big Data Machine Learning Startup within the Curry On Talks-track
ECOOP 2015 Presenter of Bits of Advice for VM Writers within the Curry On-track