Hmm, this sounds interesting. I'm wondering about a use case for it. Would Ampoule be a way to take advantage of multi-core processors?<br><br>Thanks,<br><br>Don<br><br><div class="gmail_quote">On Wed, Nov 12, 2008 at 12:09 PM, Valentino Volonghi <span dir="ltr"><<a href="mailto:dialtone@gmail.com">dialtone@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div style=""><div><div>Ampoule is a process pool implementation written on top of Twisted</div>
<div>Matrix. Its name comes from the use of AMP as the default</div><div>communication protocol between the pool and all its children.</div><div><br></div><div>It's different from other alternative solutions because it provides an</div>
<div>API very close to that of the Twisted ThreadPool. As an helper</div><div>function it also provides a deferToAMPProcess function that creates</div><div>the ProcessPool and submits jobs to it.</div></div><div><br></div>
<div>There has been 2 released since the last announce so I'm going</div><div>to report both of them here.</div><div><br></div><div><div>Ampoule 0.0.5 (2008-11-12)</div><div>==========================</div><div><br></div>
<div>Changes</div><div>--------</div><div> - Fixed bug #259264, this fix introduces a number of changes in the</div><div> architecture of the project:</div><div> 1. Removed childReactor argument form the process pool and added</div>
<div> a starter argument.</div><div> 2. Introduced the concept of a starter object whose role is to</div><div> start subprocesses with given parameters. This makes it easier</div><div> to specify particular parameters (eg. new env variables) to the</div>
<div> child processes without needing to override many methods in the</div><div> pool using closures.</div><div> 3. main.py is completely changed and now provides the ProcessStarter</div><div> object which is a default implementation of IStarter.</div>
<div> 4. IStarter interface currently documents only 2 methods:</div><div> startAMPProcess</div><div> startPythonProcess</div><div> in the future it's possible that we will add an additional:</div>
<div> startProcess</div><div> that starts whichever process we want without requiring python,</div><div> also this might end up with the separation of ProcessPool in at</div><div> least 2 logical levels: the ProcessPool and a dispatcher that</div>
<div> talks with the children, in this way it would be possible to</div><div> create custom ProcessPools without changing much code or requiring</div><div> any special requirement on the children.</div>
<div><br></div><div> - Introduced a callRemote method on the ProcessPool that is basically</div><div> the same as doWork. Introduced for symmetry between all the RPC libraries</div><div> in Twisted.</div><div><br></div>
<div> - reactor short name and ampoule child class are now passed as the 2</div><div> last arguments rather than the first 2. So if you have written any</div><div> custom bootstrap code be sure to change sys.argv[1] and sys.argv[2]</div>
<div> into sys.argv[-2] and sys.argv[-1] respectively.</div></div><div><br></div><div><div>Ampoule 0.0.4 (2008-11-03)</div><div>==========================</div><div><br></div><div>Changes</div><div>--------</div><div> - Ampoule parent process and child processes now talk using FDs 3 (in)</div>
<div> and 4 (out) in order to avoid problems with libraries that mistakenly</div><div> send error lines to stdout (yes, I'm looking at you gtk+)</div><div><br></div></div><font color="#888888"><div><br></div><div>
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<div><div><span style="border-collapse: collapse; font-family: arial; font-size: 13px; white-space: pre-wrap;">-- </span></div><div><span style="border-collapse: collapse; font-family: arial; font-size: 13px; white-space: pre-wrap;">Valentino Volonghi aka Dialtone</span></div>
<div><span style="border-collapse: collapse; font-family: arial; font-size: 13px; white-space: pre-wrap;">Now running MacOS X 10.5</span></div><div><span style="border-collapse: collapse; font-family: arial; font-size: 13px; white-space: pre-wrap;">Home Page: <a href="http://www.twisted.it" target="_blank">http://www.twisted.it</a> </span></div>
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