[webkit-dev] Is there a plan for supporting multi-process and WebCL in webkit

[Filip Pizlo]

On Apr 10, 2013, at 2:29 AM, "Pozdnyakov, Mikhail" <mikhail.pozdnyakov at intel.com> wrote:

> 
> 
>> Why not infer ParallelArrays automatically?
> Sorry, did not get it. Could you please elaborate?

Normal JS arrays. You use them with pure computation. Profiler notices this. And then the same things that you have in the ParallelArrays proposal now work except you don't need a new type. 

> 
> I'm not insisting on this concrete proposal, my point is just that it would be more safe and natural to enhance  
> ECMAScript (enable parallel calculations there) rather than make developers to introduce OpenCL snippets to their web apps.

It's even more natural to not add yet another array type to ECMAScript. 

-F

> 
> BR,
> Mikhail
> 
> ________________________________________
> From: Filip Pizlo [fpizlo at apple.com]
> Sent: Wednesday, April 10, 2013 10:37 AM
> To: Pozdnyakov, Mikhail
> Cc: Jer Noble; Benjamin Poulain; webkit-dev at lists.webkit.org
> Subject: Re: [webkit-dev] Is there a plan for supporting multi-process and WebCL in webkit
> 
> Why not infer ParallelArrays automatically?  What is the specific reason for requiring a new type?
> 
> -Filip
> 
> 
> On Apr 10, 2013, at 12:16 AM, "Pozdnyakov, Mikhail" <mikhail.pozdnyakov at intel.com<mailto:mikhail.pozdnyakov at intel.com>> wrote:
> 
> Hi,
> 
> As far as I'm concerned WebCL would have serious security issues as it lets web app to provide OpenCL target code (which is really unsafe),
> besides its using requires OpenCL knowledge and hence might be too complex for a web developer.
> Good alternative could be enabling parallel calculations inside ECMAScript itself. For instance providing ParallelArray interface for map-reduce
> calculations, there is actually a proposal already at http://wiki.ecmascript.org/doku.php?id=strawman:data_parallelism .
> 
> BR,
> Mikhail
> 
> ________________________________________
> From: webkit-dev-bounces at lists.webkit.org<mailto:webkit-dev-bounces at lists.webkit.org> [webkit-dev-bounces at lists.webkit.org<mailto:webkit-dev-bounces at lists.webkit.org>] on behalf of Jer Noble [jer.noble at apple.com<mailto:jer.noble at apple.com>]
> Sent: Tuesday, April 09, 2013 11:23 PM
> To: Benjamin Poulain
> Cc: webkit-dev at lists.webkit.org<mailto:webkit-dev at lists.webkit.org>
> Subject: Re: [webkit-dev] Is there a plan for supporting multi-process and WebCL in webkit
> 
> On Apr 9, 2013, at 10:47 AM, Benjamin Poulain <benjamin at webkit.org<mailto:benjamin at webkit.org><mailto:benjamin at webkit.org>> wrote:
> 
> I am very curious about the source of interest in OpenCL on browser. While OpenCL is a great technology, I have the feeling it is not ready for the web.
> What kind of applications do you foresee being powered by OpenCL on the Web?
> 
> I can imagine some use of CPU based kernels for the web (for image manipulation for example). But I have a hard time seeing how adding full support of OpenCL would not be shooting ourself in the foot at this point. That may change in the future when GPU hardware converges…
> 
> There has also been interest in the WebAudio WG about using OpenCL/WebCL for custom audio processing.  There are significant performance issues involved with doing custom audio processing in JavaScript, even in a Worker thread, but WebCL may offer performance and memory characteristics which would couple well with the requirements of realtime audio threads.
> 
> -Jer
> 
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