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Everything looks like it's working as planned - the nodes that Tom
doesn't use are the only ones taking the render jobs... and they're
really good at render jobs, so even though only 1 or 2 are running
at once for any given job, they're moving through quickly. I
increased the BladeMax for Maya to 3, which seems to be working
fine, too.<br>
<br>
I added 4 more nodes today, and will add another 4 on Monday, so
that should help as well.<br>
<br>
On that note, I was looking over the logs for the past year, and
noticed this rather astonishing fact:<br>
<br>
Over the past year, we have more than doubled both the amount of RAM
and the number of processors in the cluster. Total cost? Under $10K.
Thanks, eBay (and whoever bought all those C6100's and then unloaded
them for so cheap to all of those eBay sellers)<br>
<br>
On Monday, we will surpass 1TB of RAM in the cluster, and pass 700
CPU "cores" (Nehalems count as two cores per actual core, since they
have two execution units - kinda cheating). Neat. Not bad for a
$5K/year budget.<br>
<br>
:)<br>
<br>
-Josiah<br>
<br>
<br>
<div class="moz-cite-prefix">On 1/24/14 10:50 PM, Chris Perry wrote:<br>
</div>
<blockquote
cite="mid:CA1B0B1E-F4CD-4021-90C7-451DE8363A22@hampshire.edu"
type="cite">
<div><br>
</div>
For future reference:
<div>In the web interface, click on your job to select it. The
pane below the job list will show various job features. If you
click on the priority # you can just type in a new one!</div>
<div><br>
</div>
<div>- chris</div>
<div><br>
<div><br>
<div>
<div>On Jan 24, 2014, at 10:48 PM, Thomas Helmuth wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div dir="ltr">
<div>
<div>Hi Chris,<br>
<br>
</div>
That is perfect, thanks! I'm not sure how to change
the priority of my current runs, but that doesn't seem
to be an issue as they seem to be off and running now
that you lowered your priority. I don't expect to need
to start any new jobs before the deadline, but if I do
I'll make sure to spool them at priority 121. Thanks
for being flexible!<br>
<br>
</div>
-Tom<br>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Fri, Jan 24, 2014 at 10:00
PM, Chris Perry <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:perry@hampshire.edu" target="_blank">perry@hampshire.edu</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
It seems that there's an easy solution which is to
just lower the priority of our jobs (or raise the
priority of your jobs). This should mean that
whenever a task finishes on our jobs, tractor will
give your higher-priority tasks the attention they
need first. And as long as your higher-priority job
is running, it will get the procs before the
lower-priority jobs. Will this work okay for the
time being?<br>
<br>
I just lowered the priority for the tube and lilyd3
jobs that are running. I also did 'retry running
tasks' on lilyd3 which killed the running renders
and respooled them, which will automatically send
them only to the nodes that your jobs are not
running on given the lower priority. As Bassam's
frames finish (they seem pretty fast and the
already-running ones should be done within minutes),
new ones will only spool behind your jobs.<br>
<br>
Tom - moving forward during this crunch period, you
should just go ahead and spool at priority 121. This
will cause your jobs to run at an even higher
priority than our single-frame renders which means
that your jobs will always get priority on the procs
you can run on, and ours will receive whatever's
left.<br>
<br>
Anyone worried about this approach? Seems to be
exactly what the priority system is built for.<br>
<br>
- chris<br>
<div>
<div class="h5"><br>
<br>
On Jan 24, 2014, at 9:29 PM, Thomas Helmuth
wrote:<br>
<br>
> Hi fly cluster users,<br>
><br>
> Lee and I have a paper deadline coming up
on January 29th, and I am hoping to get a few
sets of runs before the deadline. If it isn't
too much of an inconvenience, I was wondering if
it would be possible to pause other task
launches until all of my runs have started.<br>
><br>
> If it helps, I never use certain nodes
because I have had problems with crashed runs on
them, so you'd be able to still use those. I'm
not sure exactly which ones I don't use --
Josiah has set up the service tag "tom" for
them. I'm sure I'm not using any asheclass
nodes, and I believe a few nodes on racks 1 and
4. Maybe Josiah could even set up a service tag
that includes the nodes I don't use? I'm not
sure if this would be helpful for already
spooled jobs, but could with future jobs.<br>
><br>
> Thanks, and I'll let you know when all my
runs have nodes!<br>
> Tom<br>
</div>
</div>
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<br>
<pre class="moz-signature" cols="72">--
-----
Wm. Josiah Erikson
Head, Systems and Networking
Hampshire College
Amherst, MA 01002
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