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Add another constraint, that you only have 6 jobs that you can submit
to the LRM queue, are you still as optimistic about using dynamic
resource provisioning? <br>
<br>
Mihael Hategan wrote:
<blockquote cite="mid:1239296925.1717.14.camel@localhost" type="cite">
<pre wrap="">On Thu, 2009-04-09 at 09:56 -0700, Ioan Raicu wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Assuming you have more work to do, than the static resources
allocated, you are not wasting any resources. The workflow will run
until the resources are de-allocated, and whatever was not completed,
will get rescheduled on the next round of static resources allocated.
</pre>
</blockquote>
<pre wrap=""><!---->
Right. As opposed to the system figuring out that there is more work and
having workers ready appropriately.
</pre>
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<pre wrap=""> As far as I know, this is the usage pattern of the static resource
allocation on the BG/P for the few regular users, that are running
several jobs per day, where each job is a static resource allocation
of 1K~10K processors for several hours each. Their parameter space is
large enough that they keep doing this over and over again, and they
still more work to do!
</pre>
</blockquote>
<pre wrap=""><!---->
Which, seems to show that, for static provisioning to work efficiently,
you need to fit work exactly into the pre-allocated resources, or have
pre-allocated resources to exactly fit your work load.
I'm still not sure why you would choose this instead of "allocate
resources on demand and de-allocate resources when you stop needing
them".
</pre>
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<br>
<pre class="moz-signature" cols="72">--
===================================================
Ioan Raicu, Ph.D.
===================================================
Distributed Systems Laboratory
Computer Science Department
University of Chicago
1100 E. 58th Street, Ryerson Hall
Chicago, IL 60637
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Email: <a class="moz-txt-link-abbreviated" href="mailto:iraicu@cs.uchicago.edu">iraicu@cs.uchicago.edu</a>
Web: <a class="moz-txt-link-freetext" href="http://www.cs.uchicago.edu/~iraicu">http://www.cs.uchicago.edu/~iraicu</a>
<a class="moz-txt-link-freetext" href="http://dev.globus.org/wiki/Incubator/Falkon">http://dev.globus.org/wiki/Incubator/Falkon</a>
<a class="moz-txt-link-freetext" href="http://dsl-wiki.cs.uchicago.edu/index.php/Main_Page">http://dsl-wiki.cs.uchicago.edu/index.php/Main_Page</a>
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