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<p class="MsoNormal"><span lang="EN-CA">I just started to investigate the possibility of using MPI in our application on the Windows platform.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Here is what I am trying to accomplish:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">I am trying to use both of the following techniques:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">1. MPI_Comm_Spawn <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">2. Client/server model using MPI_Open_port/MPI_Comm_accept/MPI_Comm_connect<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">I followed the example code here:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">http://www.mcs.anl.gov/research/projects/mpi/mpi-standard/mpi-report-2.0/node98.htm#Node98<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">http://www.mcs.anl.gov/research/projects/mpi/mpi-standard/mpi-report-2.0/node106.htm<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">and was able to get them working if I use mpiexec / smpd. However, I want to start the executable without using mpiexec / smpd since we already have our own windows service application to deal with compute node resource
allocation.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">I already read through a lot of documentations, but couldn't find my answers to some of the basic problems that I am trying to solve:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">1. Base on the MPI 2.2 document section 8.8 here:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">http://www.mpi-forum.org/docs/mpi-2.2/mpi22-report.pdf<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">It's not a requirement to use mpiexec / mpirun to start an MPI program.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Is there any example available for starting the MPI program without using mpiexec / mpirun?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">2. I found an example that allows debugging without the use of a process manager by setting environment variable in section 9.8 of this doc:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">http://www.mcs.anl.gov/research/projects/mpich2/documentation/files/mpich2-1.3.2-windevguide.pdf<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">It noted that this cannot support MPI_Comm_Spawn. Is that a technical limitation or there is a workaround?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Thanks in advance for your help!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Eric<o:p></o:p></span></p>
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