[dmd-concurrency] blip parallelization

[Andrei Alexandrescu]

Thanks for sharing. I read the document but got left with the impression 
that the foreplay is not followed by something more fleshed out.

How do you compare and contrast your work with the existing work 
stealing frameworks e.g. Cilk?


Andrei

Fawzi Mohamed wrote:
> I tried to stay out of the discussion, because I am too busy, but 
> concurrency is a topic that really interest me so I decided to write a 
> document explaining the parallelization concepts behind blip.
> 
> Blip is a library that I am developing, I still haven't really announced 
> it, because I don't think it is really ready for prime time (inching 
> toward v 0.5: useful for other programmers that want to thinker with 
> it), but I already talked about it a couple of times when some relevant 
> topic came up.
> 
> For the parallelization I think that it is important to have good stable 
> primitives, new languages features are not really necessary, so I worked 
> mainly with D 1.0 and tango, but I did try to write portable code, the 
> whole output is mostly independent of tango, as it is based on a sink 
> (void delegate(char[])), in D 2.0 it should be delegate(const char[]), 
> and probably several other things, but I tried to be portable. The thing 
> that I missed most in D 1.0 are real closures.
> I just (finally!) switched to a scheduler that takes advantage of numa 
> information (after some not so good experiments with a more hierarchical 
> approach), it seems to work but I am pretty sure that there are still 
> bugs around.
> 
> Anyway I have quite clear ideas about what I want as parallelization 
> framework, and it is rather different from the what was presented, so I 
> think that it could be interesting to present the ideas behind it.
> 
> http://github.com/fawzi/blip/blob/master/ParallelizationConcepts.txt
> 
> ciao
> Fawzi
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