Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.python > #24747

Re: when "normal" parallel computations in CPython will be implemented at last?

Path csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!ecngs!feeder2.ecngs.de!newsfeed.freenet.ag!news2.euro.net!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <t@jollybox.de>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.006
X-Spam-Evidence '*H*': 0.99; '*S*': 0.00; 'python.': 0.02; 'cpython': 0.05; 'pypy': 0.07; 'stackless': 0.09; 'url:peps': 0.09; '"for"': 0.16; 'concurrency': 0.16; 'forking': 0.16; 'gil,': 0.16; 'least,': 0.16; 'received:192.168.1.50': 0.16; 'subject: \n ': 0.16; 'subject:when': 0.16; 'url:stackless': 0.16; 'wrote:': 0.17; 'url:dev': 0.17; 'url:moin': 0.17; 'all,': 0.21; 'amounts': 0.22; 'subject:will': 0.22; 'header:In-Reply-To:1': 0.25; 'header:User- Agent:1': 0.26; 'url:wiki': 0.26; 'possibility': 0.27; 'topic': 0.27; 'integrate': 0.27; "doesn't": 0.28; 'gil': 0.29; 'occasional': 0.29; 'url:06': 0.29; 'subject:last': 0.30; 'url:2012': 0.30; 'url:python': 0.32; 'ram': 0.33; 'rid': 0.33; 'to:addr:python-list': 0.33; 'progress': 0.33; 'or,': 0.34; 'done': 0.34; 'open': 0.35; 'pm,': 0.35; 'subject:?': 0.35; 'something': 0.35; 'there': 0.35; 'list.': 0.35; 'but': 0.36; 'url:org': 0.36; 'modules': 0.36; 'subject:" ': 0.36; 'ok,': 0.37; 'plans': 0.37; 'upcoming': 0.37; 'far': 0.37; 'data': 0.37; 'subject:: ': 0.38; 'copying': 0.38; 'mean': 0.38; 'some': 0.38; 'to:addr:python.org': 0.39; 'received:192': 0.39; 'received:192.168': 0.40; 'received:62': 0.62; 'information': 0.63; 'url:blogspot': 0.64; 'due': 0.66; 'subject': 0.66; 'from:addr:t': 0.84; 'python-dev': 0.84; 'received:62.75': 0.84
Date Sun, 01 Jul 2012 20:53:13 +0200
From Thomas Jollans <t@jollybox.de>
User-Agent Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120615 Thunderbird/13.0.1
MIME-Version 1.0
To python-list@python.org
Subject Re: when "normal" parallel computations in CPython will be implemented at last?
References <339f28b0-1305-43b9-b2b1-02e332bc80e3@q29g2000vby.googlegroups.com>
In-Reply-To <339f28b0-1305-43b9-b2b1-02e332bc80e3@q29g2000vby.googlegroups.com>
Content-Type text/plain; charset=ISO-8859-1
Content-Transfer-Encoding 7bit
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.12
Precedence list
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive <http://mail.python.org/pipermail/python-list>
List-Post <mailto:python-list@python.org>
List-Help <mailto:python-list-request@python.org?subject=help>
List-Subscribe <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.1687.1341168800.4697.python-list@python.org> (permalink)
Lines 24
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1341168800 news.xs4all.nl 6971 [2001:888:2000:d::a6]:40923
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:24747

Show key headers only | View raw


On 07/01/2012 07:51 PM, dmitrey wrote:
> hi all,
> are there any information about upcoming availability of parallel
> computations in CPython without modules like  multiprocessing? I mean
> something like parallel "for" loops, or, at least, something without
> forking with copying huge amounts of RAM each time and possibility to
> involve unpiclable data (vfork would be ok, but AFAIK it doesn't work
> with CPython due to GIL).
> 
> AFAIK in PyPy some progress have been done (
> http://morepypy.blogspot.com/2012/06/stm-with-threads.html )

As far as I can tell, there are no concrete plans to integrate
concurrency better, or get rid of the GIL, at the moment. To quote
http://wiki.python.org/moin/GlobalInterpreterLock

  """Getting rid of the GIL is an occasional topic on the python-dev
mailing list. No one has managed it yet."""

There are currently no open or accepted PEPs on the subject of concurrency.
http://www.python.org/dev/peps/

There is, of course, Stackless Python.
http://stackless.com/

Back to comp.lang.python | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

when "normal" parallel computations in CPython will be implemented at last? dmitrey <dmitrey15@gmail.com> - 2012-07-01 10:51 -0700
  Re: when "normal" parallel computations in CPython will be implemented at last? Thomas Jollans <t@jollybox.de> - 2012-07-01 20:53 +0200
    Re: when "normal" parallel computations in CPython will be implemented at last? Ross Ridge <rridge@csclub.uwaterloo.ca> - 2012-07-01 16:03 -0400
  Re: when "normal" parallel computations in CPython will be implemented at last? Thomas Jollans <t@jollybox.de> - 2012-07-01 20:58 +0200
  Re: when "normal" parallel computations in CPython will be implemented at last? Andrew Berg <bahamutzero8825@gmail.com> - 2012-07-01 14:09 -0500
  Re: when "normal" parallel computations in CPython will be implemented at last? Thomas Jollans <t@jollybox.de> - 2012-07-01 21:36 +0200
  Re: when "normal" parallel computations in CPython will be implemented at last? John Nagle <nagle@animats.com> - 2012-07-02 10:51 -0700
    Re: when "normal" parallel computations in CPython will be implemented at last? Tim Roberts <timr@probo.com> - 2012-07-03 20:16 -0700
  Re: when "normal" parallel computations in CPython will be implemented at last? Stefan Behnel <stefan_ml@behnel.de> - 2012-07-02 20:37 +0200

csiph-web