<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoPlainText, li.MsoPlainText, div.MsoPlainText
{mso-style-priority:99;
mso-style-link:"Texte brut Car";
margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Texte de bulles Car";
margin:0cm;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";
mso-fareast-language:EN-US;}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.TextedebullesCar
{mso-style-name:"Texte de bulles Car";
mso-style-priority:99;
mso-style-link:"Texte de bulles";
font-family:"Tahoma","sans-serif";}
span.apple-style-span
{mso-style-name:apple-style-span;}
span.apple-converted-space
{mso-style-name:apple-converted-space;}
span.TextebrutCar
{mso-style-name:"Texte brut Car";
mso-style-priority:99;
mso-style-link:"Texte brut";
font-family:"Calibri","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="FR" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoPlainText"><span lang="EN-US">Hi all, <o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">I am new to MPI and I am currently trying to make a multi cluster application with MPI and OpenSceneGraph on windows 7.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">I am using MPICH2 for the communication stuff between the cluster's node. <o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">I built a very simple OSG application, here is the code :<o:p></o:p></span></p>
<p class="MsoPlainText"><i><span lang="EN-US">int processCount, processId;<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US">MPI_Init(&argc, &argv);<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US">MPI_Comm_size(MPI_COMM_WORLD, &processCount);<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US">MPI_Comm_rank(MPI_COMM_WORLD, &processId);<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US"> <o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US">std::cout << "processes " << processId << " of " << processCount << std::endl;<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US"><o:p> </o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US">osgViewer::Viewer viewer;<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US">while(!viewer.done())<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US">{<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US"> std::cout << "processes " << processId << " of " << processCount << std::endl;<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US"> viewer.frame();
<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US">}<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US">MPI_Finalize();<o:p></o:p></span></i></p>
<p class="MsoPlainText"><i><span lang="EN-US"><o:p> </o:p></span></i></p>
<p class="MsoPlainText"><span lang="EN-US">The application works well without the MPI stuff, it just displays a 3D viewer.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">But when I try to launch my app inside the MPI context with the command :
<i>mpiexec –n 1 mySogApp.exe</i><o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">I’ve got this error :<o:p></o:p></span></p>
<p class="MsoPlainText"><span class="apple-style-span"><i><span lang="EN-US" style="color:#444444;background:#FAFAFA">Win32WindowingSystem::getScreenInformation() - The screen identifier on the Win32 platform must always use display number 0.because it does
not exist<o:p></o:p></span></i></span></p>
<p class="MsoPlainText"><span class="apple-style-span"><i><span lang="EN-US" style="color:#444444;background:#FAFAFA"><o:p> </o:p></span></i></span></p>
<p class="MsoPlainText"><span class="apple-style-span"><span lang="EN-US" style="color:#444444;background:#FAFAFA">Does anyone has already try to use OpenSceneGraph and MPI ? Do you have any ideas for this problem ?<o:p></o:p></span></span></p>
<p class="MsoPlainText"><span class="apple-style-span"><span lang="EN-US" style="color:#444444;background:#FAFAFA"><o:p> </o:p></span></span></p>
<p class="MsoPlainText"><span class="apple-style-span"><span lang="EN-US" style="color:#444444;background:#FAFAFA">Thank you for any answers<o:p></o:p></span></span></p>
<p class="MsoPlainText"><span class="apple-style-span"><span lang="EN-US" style="color:#444444;background:#FAFAFA">Cheers<o:p></o:p></span></span></p>
<p class="MsoPlainText"><span class="apple-style-span"><span lang="EN-US" style="color:#444444;background:#FAFAFA">Sebastien</span></span><span lang="EN-US"><o:p></o:p></span></p>
</div>
</body>
</html>