Re: Models of Parallelism

2011-02-18 Thread John Zabroski
Sorry to the group if that last e-mail came off as rant'ish. I think some focus on studies would be nice, but why does it feel like (to me) that we are aimlessly picking "this versus that" studies? I would start instead by using expert knowledge, and work from there. For example, parallelism exp

Re: Models of Parallelism

2011-02-18 Thread John Zabroski
On Wed, Feb 16, 2011 at 11:10 AM, Russel Winder wrote: > Prompted by various discussions elsewhere, I am on the search for recent > experimental results and/or people doing or about to do experiments. > The questions all relate to the models of parallel software: > shared-memory multithreading, Ac

Re: Models of Parallelism

2011-02-18 Thread John Zabroski
Folks, There have been tasks looking at using different techniques for concurrent and parallel programming. I posted one example to the Lambda the Ultimate front page a few months ago. Please see "Is Transactional Programming Actually Easier?": http://lambda-the-ultimate.org/node/4070 Something

Re: Models of Parallelism

2011-02-17 Thread ok
Meredydd Luff's is an interesting study and paper. However, (1) The title is explicit that this was about PARALLEL programming, and that's what the task was. The results from a CONCURRENT programming task might well be different. For parallel programming, something like HPJava might be better.

Re: Models of Parallelism

2011-02-17 Thread Meredydd Luff
On Thu, Feb 17, 2011 at 6:37 AM, Thomas Green wrote: > How someone doing something on understanding these programs? I always found > that experiments on understanding programs were much easier than ones on > writing programs. Far less inter-subject variability. At the expense, of course, of system

Re: Models of Parallelism

2011-02-16 Thread Thomas Green
Hi Meredydd Brave effort. How someone doing something on understanding these programs? I always found that experiments on understanding programs were much easier than ones on writing programs. Far less inter-subject variability. Now that you have suitable materials, it might be possible fo

Re: Models of Parallelism

2011-02-16 Thread Meredydd Luff
Hi Russel, I did a pilot study along those lines a couple of years ago, attempting to compare performance with the Actor model, Transactional Memory and traditional mutex locking. (Not quite the precise distinctions you're looking for, but at least in a similar ballpark.) 17 subjects attempted a s

Models of Parallelism

2011-02-16 Thread Russel Winder
Prompted by various discussions elsewhere, I am on the search for recent experimental results and/or people doing or about to do experiments. The questions all relate to the models of parallel software: shared-memory multithreading, Actor Model, Dataflow Model, Communicating Sequential Processes (C