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Presentation

Recorded at:
Recorded at

From Concurrent to Parallel

Presented by Brian Goetz on Jun 19, 2009

Community
Architecture,
Java
Topics
Programming ,
Language Design ,
Design
Tags
QCon ,
QCon San Francisco 2008 ,
Parallel Programming ,
Concurrency
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Summary
Multiprocessor systems have gone from being rare and expensive to being ubiquitous. As the hardware reality changes, so do the programs we want to write and so must the platform and libraries we rely on. In Java SE 7, the java.util.concurent package will grow to address the need to exploit finer-grained concurrency, in the form of the fork-join framework.

Bio
Brian Goetz is the author of over 75 articles on software development, and the book, Java Concurrency In Practice. He serves on the JCP Expert Groups and is a Sr. Staff Engineer at Sun Microsystems.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.
Excellent overview of the forkjoin framework provided by Brian. by Jayaram Vundavalli Posted Jun 24, 2009 7:52 AM
Terrible! by Daniel Sobral Posted Sep 2, 2009 1:01 PM
  1. Yet I'm still confused of how the work stealing would work when multiple workers compele to steal the task from the tail of a single workers dequeue?

  2. Back to top

    Terrible!

    Sep 2, 2009 1:01 PM by Daniel Sobral

    God, that was awful. I'll paraphrase it here: Java sucks as a language for massive concurrency, but we don't want to face that, so, instead, we'll talk about some ad-hoc approaches to various problems that are already solved and working, and build a library for them as if it were original. Only those problems are not the everyday problems most of us face, and, as said, are solved for those who need them.

    I particularly liked when he mentioned that threads are expensive, as if this was basic truth, instead of a consequence of various characteristics of Java.

    Now, the library is nice -- actually, very good, and if I hadn't read about it before and the presentation was a bit more honest about the very limited scope of what they were doing, it would be a great presentation.

    For those still left looking for effective massive concurrency, it seems Erlang and the like are still it.

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