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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Let’s try to make this as simple as possible. What happens if you remove all the bulk transport stuff and just call frame_alloc() on each side and send the
cap? Do both caps arrive? Do the replies make it back? I’d like to understand more of the state of the system when it wedges…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Andrew<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> zeus@aluzina.org [mailto:zeus@aluzina.org]
<b>On Behalf Of </b>Zeus Gómez Marmolejo<br>
<b>Sent:</b> Tuesday, 17 April 2012 11:36<br>
<b>To:</b> Baumann Andrew<br>
<b>Cc:</b> barrelfish-users@lists.inf.ethz.ch<br>
<b>Subject:</b> Re: [Barrelfish-users] Bidirectional bulk transfer<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hey Andrew,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Yes, sorry, I was building the easy example quite fast, I forgot that. In any case if you change the line<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">while(!request_done) {<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">by<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">while(1) {<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">the result is the same. Messages are not being delivered.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">zeus.<o:p></o:p></p>
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<p class="MsoNormal">El 17 de abril de 2012 19:27, Baumann Andrew <<a href="mailto:andrewb@inf.ethz.ch">andrewb@inf.ethz.ch</a>> escribió:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi Zeus,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Perhaps this is a bug arising only from over-simplification in the example, but it looks to me like
the problem is here:</span><o:p></o:p></p>
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<span style="font-size:10.0pt;font-family:"Lucida Console""> request_done = false;</span><o:p></o:p></p>
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<span style="font-size:10.0pt;font-family:"Lucida Console""> while (!request_done) {</span><o:p></o:p></p>
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<span style="font-size:10.0pt;font-family:"Lucida Console""> event_dispatch(get_default_waitset());</span><o:p></o:p></p>
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<span style="font-size:10.0pt;font-family:"Lucida Console""> }</span><o:p></o:p></p>
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<span style="font-size:10.0pt;font-family:"Lucida Console""> </span><o:p></o:p></p>
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<span style="font-size:10.0pt;font-family:"Lucida Console""> debug_printf("DONE\n");</span><o:p></o:p></p>
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<span style="font-size:10.0pt;font-family:"Lucida Console""> </span><o:p></o:p></p>
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<span style="font-size:10.0pt;font-family:"Lucida Console""> return 0;</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Whenever either server or client sees their request completed they exit. There is no guarantee that
they have seen and responded to the other side’s request. If you instead loop while (1), does the problem still arise?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Andrew</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Zeus
Gómez Marmolejo [mailto:<a href="mailto:zeus.gomez@bsc.es" target="_blank">zeus.gomez@bsc.es</a>]
<br>
<b>Sent:</b> Tuesday, 17 April 2012 08:59<br>
<b>To:</b> <a href="mailto:barrelfish-users@lists.inf.ethz.ch" target="_blank">barrelfish-users@lists.inf.ethz.ch</a><br>
<b>Subject:</b> [Barrelfish-users] Bidirectional bulk transfer</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I'm currently testing the bulk transfer implementation and I'm having some issues. As I want to be able to send from core 0 to core 1 and from 1 to 0 large amounts of data, I'm
creating two bulk memory regions. One master to core 0 and another master to core 1. When creating this link there are two caprefs sent, one from core 0 to 1 and the other on the opposite way. In this case, the test hangs. When there is only one being sent,
the example works well.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Do you have any clues about this? I attach the example.<br clear="all">
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">-- <br>
Zeus Gómez Marmolejo<br>
Barcelona Supercomputing Center<br>
PhD student<br>
<a href="http://www.bsc.es" target="_blank">http://www.bsc.es</a><o:p></o:p></p>
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<p class="MsoNormal"><br>
<br clear="all">
<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">-- <br>
Zeus Gómez Marmolejo<br>
Barcelona Supercomputing Center<br>
PhD student<br>
<a href="http://www.bsc.es" target="_blank">http://www.bsc.es</a><br>
<br>
<o:p></o:p></p>
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