[Python-ideas] solving multi-core Python

[Rustom Mody]

On Sunday, June 21, 2015 at 6:12:22 AM UTC+5:30, Chris Angelico wrote:
>
> On Sun, Jun 21, 2015 at 7:42 AM, Eric Snow <ericsnow... at gmail.com 
> <javascript:>> wrote: 
> > * disallow forking within subinterpreters 
>
> I love the idea as a whole (if only because the detractors can be told 
> "Just use subinterpreters, then you get concurrency"), but this seems 
> like a tricky restriction. That means no subprocess.Popen, no shelling 
> out to other applications. And I don't know what of other restrictions 
> might limit any given program. Will it feel like subinterpreters are 
> "write your code according to these tight restrictions and it'll 
> work", or will it be more of "most programs will run in parallel just 
> fine, but there are a few things to be careful of"? 
>
> ChrisA 
>


Its good to get our terminology right: Are we talking parallelism or 
concurrency?
Some references on the distinction:

Bob Harper: 
https://existentialtype.wordpress.com/2011/03/17/parallelism-is-not-concurrency/
Rob Pike: 
http://concur.rspace.googlecode.com/hg/talk/concur.html#landing-slide

[Or if you prefer the more famous 
https://www.youtube.com/watch?v=cN_DpYBzKso 
] 
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