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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi everybody,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>I am using IPOPT in a native C++ application (using the C++ API) where I want to make parallel solves of independent problems.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Since there is no object share, I thought that it would be possible after I read the changelog of IPOPT 3.11 : <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> localized global variables in TaggedObject and RegisteredOption,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> so that Ipopt should now be threadsafe as long as Ipopt objects<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> (esp. SmartPtr's) are not shared between threads and a threadsafe<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> linear solver is used (e.g., MA27) [#167]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>But it does not work probably because I am using the default linear solver (MUMPS I suppose). <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I look for another linear solver here <a href="http://www.coin-or.org/Ipopt/documentation/node13.html">http://www.coin-or.org/Ipopt/documentation/node13.html</a> and I came to the conclusion that the only free solver allowing parallel solve is MA27. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Is this true or am I missing something ?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Best regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Nicolas<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div><p></p>
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