Processing-Mode Equality

[Maurice Naftalin]

I realise that I underspecified the problem at the start. It's not just that the results of processing in each mode must produce the same result (modulo any expected nondeterminism), but also that the two execution modes are equally important – for example, the API doesn't provide any operations that can only be executed (feasibly) in sequential mode.

Maurice

On 6 Feb 2014, at 13:17, Timo Kinnunen wrote:

> Sameness of Sequential and Parallel?
> 
> -- 
> Have a nice day,
> Timo.
> 
> Sent from Windows Mail
> 
> From: Millies, Sebastian
> Sent: ‎Thursday‎, ‎February‎ ‎6‎, ‎2014 ‎15‎:‎07
> To: Victor Nazarov, Maurice Naftalin
> Cc: lambda-dev at openjdk.java.net
> 
> it's not quite transparent, in particular because it's explicit and therefore visible.
> Haven't Brian Goetz and Paul Sandoz used the phrase "unobtrusive parallelism" ?
> 
> However, that wording refers more to the manner of specifying a processing
> mode, not to the relation between them, so perhaps it's not what you're aiming
> for.
> 
> How about: "sequential-parallel conformance" ?
> 
> -- Sebastian
> 
> -----Original Message-----
> From: lambda-dev-bounces at openjdk.java.net [mailto:lambda-dev-bounces at openjdk.java.net] On Behalf Of Victor Nazarov
> Sent: Thursday, February 06, 2014 1:52 PM
> To: Maurice Naftalin
> Cc: lambda-dev at openjdk.java.net
> Subject: Re: Processing-Mode Equality
> 
> transparent parallelism?
> 
> --
> Victor Nazarov
> 
> 
> On Thu, Feb 6, 2014 at 4:18 PM, Maurice Naftalin <maurice at morninglight.co.uk
> > wrote:
> 
> > In writing about streams, I want to explain how the API has been
> > shaped by the design goal of maintaining functional equivalence
> > between parallel and sequential execution. I'm looking for a name for
> > that goal, but so far the best I've come up with is the Principle of
> > Processing-Mode Equality, which is pretty clumsy. I'd appreciate
> > suggestions for improving it (which I will be happy to attribute). Thanks in advance!
> >
> > Maurice
> >
> >
> 
> 
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