<div dir="ltr">Hi folks,<div><br></div><div>If you decide to have a small instance to be a master node and big ones to run as slaves, what should happens to the placement group? Does StarCluster put only the slaves (depending on the instance size) on the placement group or none?</div><div><br></div><div>All best,</div><div><br>Sergio</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Oct 24, 2014 at 9:33 AM, Pablo Escobar <span dir="ltr"><<a href="mailto:pescobar001@gmail.com" target="_blank">pescobar001@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">Hi Robert,<div><br></div><div>After reading your email I have seen that in the configuration there are two options about instance types, NODE_INSTANCE_TYPE and MASTER_INSTANCE_TYPE</div><div><br></div><div>So the solution to achieve my desired setup seems to configure the master to not being an exec node and select different type of instance for node and master.</div><div><br></div><div>Thanks for your help and sorry for the beginner question...just doing my first steps with starcluster </div><div><br></div><div>Pablo.</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">2014-10-24 13:27 GMT+02:00 Petit III, Robert A. <span dir="ltr"><<a href="mailto:robert.petit@emory.edu" target="_blank">robert.petit@emory.edu</a>></span>:<div><div class="h5"><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">Hi Pablo,
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<div>If the master is set to not be an exec node, the worker nodes can be a different type. The situation you describe, (small master instance, large compute instances) is my current set up.</div>
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<div>I believe things are different when the master is set as an exec host. </div>
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<div>Cheers,</div>
<div>Robert</div>
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<div style="direction:ltr"><font face="Tahoma" color="#000000"><b>From:</b> <a href="mailto:starcluster-bounces@mit.edu" target="_blank">starcluster-bounces@mit.edu</a> [<a href="mailto:starcluster-bounces@mit.edu" target="_blank">starcluster-bounces@mit.edu</a>] on behalf of Pablo Escobar [<a href="mailto:pescobar001@gmail.com" target="_blank">pescobar001@gmail.com</a>]<br>
<b>Sent:</b> Friday, October 24, 2014 5:48 AM<br>
<b>To:</b> <a href="mailto:starcluster@mit.edu" target="_blank">starcluster@mit.edu</a><br>
<b>Subject:</b> [StarCluster] is mandatory that master instance is the same kind of instance than compute nodes?<br>
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<div dir="ltr">Hi,
<div><br>
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<div>I have been doing some testing with starcluster and I see that by default every machine is the same type of instance and that the sge_master is also an sge_exec node.</div>
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<div>I have read in the documentation that the sge plugin allows to configure the master node to not being an exec node. </div>
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<div>The ideal setup for me would be to have the master node being a small instance just running the sge_master and not running jobs and the compute nodes being bigger instances in terms of hardware resources.</div>
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<div>is this setup currently possible in starcluster? or is mandatory that every machine is the same kind of instance?</div>
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<div>thanks for your help.</div>
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<div>Pablo.</div>
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