<div dir="ltr">Hi Guilherme<div><br></div><div style>There is *no* difference from the OpenMPI point of view between physical MPI and virtual MPI cluster. Just do the same steps but always *in* the VMs. I suggest you:</div>

<div style><br></div><div style>1.- Prepare one VM image as front-end. With the LRMS of your choice (SGE...), NFS MPI libraries and the like</div><div style><br></div><div style>2.- Configure a VM as node that can be instantiated multiple times, so you can instantiate multiple cluster nodes.</div>

<div style><br></div><div style>In summary, follow any guide or tutorial to setup a MPI cluster but use your VMs as nodes. Do not install anything in the OpenNebula nodes.</div><div style><br></div><div style>Good Luck</div>

<div style><br></div><div style>Ruben</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Apr 29, 2013 at 7:26 AM, Guilherme Guimaraes <span dir="ltr"><<a href="mailto:gboulhosa@gmail.com" target="_blank">gboulhosa@gmail.com</a>></span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello my dear,<br><br><span lang="en"><span>I decided to do</span> <span>a drawing</span> <span>for a better</span> <span>understanding.</span> <span>In it</span> <span>I have a</span> <span>working</span> <span>environment</span> <span>as described</span> </span><span lang="en"><span>attached</span></span><span lang="en"><span>.</span> <span>What I</span> <span>would like to know</span> <span>how to</span> <span>run</span> <span>MPI</span> <span>parallel applications</span> <span>on a</span> <span>virtual cluster</span><span>.</span><br>


<span>1</span> <span>-</span> <span>Where should I</span> <span>install</span> <span>OpenMPI</span> <span>in</span> <span>physical</span> <span>or virtual</span> <span>machines</span><span>;</span><br>
<span>2</span> <span>-</span> <span>What settings</span> <span>should I</span> <span>still</span> <span>make</span> <span>the environment</span> <span>for this procedure</span> <span>to be</span> <span>performed</span><span>.</span><br>


<span>3</span> <span>-</span> <span>Enter</span> <span>the</span> <span>virtual machine</span> <span>I set</span> <span>something like:</span><br>      <span>3.1</span> <span>-</span> <span>Choose a</span> <span>master</span> <span>among them</span><br>


      <span>3.2</span> <span>-</span> <span>Setting up</span> <span>SSH</span><br>      <span>3.3</span> <span>-</span> <span>Etc. ..</span><br><span>4</span> <span>-</span> <span>I need to configure</span> <span>NFS</span><span>, if</span> <span>yes</span> <span>where</span> <span>physical</span> <span>or virtual</span> <span>machine</span><br>


<br><span>Attached file</span> <span>is</span> <span>editable</span> <span>(</span><span>odt</span> <span>/</span> <span>doc</span><span>)</span><span>,</span> <span>which</span> <span>can be</span> <span>added</span> <span>the need</span> <span>for execution</span> <span>of</span> <span>MPI</span> <span>application</span><span>.</span></span><span class="HOEnZb"><font color="#888888"><br clear="all">


<br>-- <br><i style="color:rgb(153,153,153)">Atenciosamente, <br>Guilherme B. Guimarães</i><br><i style="color:rgb(153,153,153)">Mestrando em Ciência da Computação - PPGCC/UFPA</i><br><i style="color:rgb(153,153,153)">Especialista em desenvovilemento para Internet - UFPA<br>


Bacharel em Ciência da Computação - UNAMA </i><br><font><span style="font-weight:bold;font-family:arial,helvetica,sans-serif"></span></font><br>
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