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<font size="-1">In terms of hardware, I assume more / faster
processors will be a good thing, but does openslide benefit from
GPUs (i.e. does the graphics card matter at all)?<br>
<br>
thanks<br>
<br>
Mark</font><br>
<br>
<div class="moz-cite-prefix">On 1/15/2014 11:08 PM, Benjamin Gilbert
wrote:<br>
</div>
<blockquote cite="mid:52D77764.9030907@cs.cmu.edu" type="cite">
<pre wrap="">On 01/15/2014 03:07 PM, Mark Ungrin wrote:
</pre>
<blockquote type="cite">
<pre wrap="">What would be your recommendations in terms of hardware for a slidedeck
server, and how would it change for say 35 vs 100 vs 200 students?
</pre>
</blockquote>
<pre wrap="">
I don't have specific recommendations. If you have 200 *simultaneous*
users, you might need a fair amount of CPU and I/O. If you try it, let
us know how it goes. :-)
If you have a large number of students and a small-to-moderate number of
slides, you may want to consider using VIPS to generate the Deep Zoom
tiles in advance. Then you'd just need to serve the tiles from disk
with a regular web server.
</pre>
<blockquote type="cite">
<pre wrap="">Also slidedeck seems much faster than deepzoom when bringing up the
initial image when first loading (both via Apache) - are they handling
the images differently?
</pre>
</blockquote>
<pre wrap="">
By default, when OpenSeadragon loads a Deep Zoom pyramid, it loads each
pyramid level in turn starting from the first. This is pointless, since
the 9th Deep Zoom level is less than 256 pixels on a side. SlideDeck
and the OpenSlide demo site have a hack to start OpenSeadragon at the
9th level, but since deepzoom_server.py is supposed to be example code
it doesn't have the hack.
--Benjamin Gilbert
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Dr. Mark Ungrin, Ph.D.
Assistant Professor
Department of Comparative Biology & Experimental Medicine
HMRB 320, 3330 Hospital Drive NW
Calgary, AB T2N 4N1
University of Calgary, Faculty of Veterinary Medicine
Email: <a class="moz-txt-link-abbreviated" href="mailto:mark.ungrin@ucalgary.ca">mark.ungrin@ucalgary.ca</a>
<a class="moz-txt-link-freetext" href="http://www.ucalgary.ca/ungrinlab">http://www.ucalgary.ca/ungrinlab</a>
office: 403.210.6203
cell: 403.561.6817
lab: 403.210.6545
fax: 403.210.8821
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