Dale Schumacher explains the actor concept and how it helps us build a computational model resembling the reality around us more accurately than the object-oriented model.
Ralph Johnson presents several data parallelism patterns, including related Java, C# and C++ libraries from Intel and Microsoft, comparing it with other forms of parallelism such as actor programming.
Ralph Johnson presents several data parallelism patterns, including related libraries from Intel and Microsoft, comparing it with other forms of parallel programming such as actor programming.
Guy L. Steele Jr. believes that it should not be the programmer’s job to think about parallelism, but languages should provide ways to transparently run tasks in parallel. This requires a new approach in building languages supporting algorithms built on independence and build-and-conquer principles rather than on linear decomposition of problems.
Guy Steele, Douglas Crockford, Josh Bloch, Alex Payne, Bruce Tate, and Ted Neward (moderator) hold a discussion on the future of programming. Topics included: the future beyond functional, running JVM/CLR on many cores, what is the future of type checking and type systems, languages for education, comparing DSLs and ubiquitous languages, proving code correctness, functional and parallelism.
Ulf Wiger shows how concurrency can lead to accidental complexity if it is badly implemented in code, becoming a project’s point of failure. Wiger also advises on how concurrency should be addressed in order to avoid complexity.
Simon Marlow explains through code samples what Haskell has to offer for concurrent programming through concurrent data structures and thread-based concurrency, and Haskell’s tools for parallel programming.
Ralph Johnson presents a pattern language that he and his colleagues are working on in an attempt to solve the hard issues of parallel programming through a set of design patterns: Structural Patterns, Computational Patterns, Parallel Algorithm Strategy Patterns, Implementation Strategy Patterns, and Concurrent Execution Patterns.
In his keynote at JVM Languages Summit 2009, Rich Hickey advocated for the reexamination of basic principles like state, identity, value, time, types, genericity, complexity, as they are used by OOP today, to be able to create the new constructs and languages to deal with the massive parallelism and concurrency of the future.
Ulf Wiger shows typical Erlang programs, patterns that scale well on multicore and patterns that don't, profiling and debugging parallel applications and ensuring correct behaviour with QuickCheck.
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.