<div> </div>
<div>Hi John,</div>
<div> </div>
<div>Thanks for your reply, Did you know whether OsiCbc is threadsafe? I tried my parallel experiment with small instances on NCSA, it works just fine. However, Cbc crashes when the instance size get larger. </div>
<div> </div>
<div>Thanks -- yang<br><br> </div>
<div><span class="gmail_quote">On 3/27/07, <b class="gmail_sendername">John J Forrest</b> <<a href="mailto:jjforre@us.ibm.com">jjforre@us.ibm.com</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">As far as I know Clp is threadsafe with one minor caveat. If you use<br>ClpSimplex::initialSolve then that can use signal_handler to trap ctrl-c
<br>for a graceful exit. You can set an option to stop this happening. I<br>think the worst that would happen anyway is that a random process would<br>stop each time you hit ctrl-c.<br><br>John Forrest<br><br><br><br> "yang yuan"
<br> <erry.yuan@gmail.<br> com> To<br> Sent by: <a href="mailto:Coin-discuss@list.coin-or.org">Coin-discuss@list.coin-or.org
</a><br> coin-discuss-boun cc<br> <a href="mailto:ces@list.coin-or">ces@list.coin-or</a>.<br> org Subject
<br> [Coin-discuss] Multi-threaded mode<br> for Cbc/Clp<br> 03/23/07 01:36 PM<br><br><br> Please respond to<br> Discussions about
<br> open source<br> software for<br> Operations<br> Research<br> <coin-discuss@lis<br> <a href="http://t.coin-or.org">t.coin-or.org</a>>
<br><br><br><br><br><br><br><br>Hi all,<br><br>I am trying to run a shared-memory parallel experiment with OpenMP, and Cbc<br>and Clp are the selected MIP/LP solver, and are compiled with default<br>setting. However, i am not so sure that the Cbc/Clp is running in a
<br>multi-threaded mode as expected. If i remember it correct, SYMPHONY has an<br>option for compilation in a shared-memory based environment. Does Cbc have<br>the same option? and what should i do to compile Cbc for shared-memory use,
<br>if it hasn't been done automatically?<br><br>Many thanks! -- yang_______________________________________________<br>Coin-discuss mailing list<br><a href="mailto:Coin-discuss@list.coin-or.org">Coin-discuss@list.coin-or.org
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