veyepar: Python's role in VisIt

Author(s):	Cyrus Harrison, Harinarayan Krishnan
Location	106
Date	jul Thu 19	Days Raw Files
Start	12:10	First Raw Start	12:09
Duration	20:00	Offset	0:00:54
End	12:30	Last Raw End	12:49
Chapters	00:00
Total cuts_time	20 min.

raw-playlist raw-mp4-playlist encoded-files-playlist host archive public tweet mp4 svg png

assets release.pdf Pythonu2019s_role_in_VisIt.json
logs
Admin: episode episode list cut list raw files day marks day marks day image_files

State:

Locked:

clear this to unlock

Locked by:

user/process that locked.

Start:

initially scheduled time from master, adjusted to match reality

Duration:

length in hh:mm:ss

Name:

Video Title (shows in video search results)

Emails:

email(s) of the presenter(s)

Released:

has someone authorised pubication

Normalise:

Channelcopy:

m=mono, 01=copy left to right, 10=right to left, 00=ignore.

Thumbnail:

filename.png

Description:

markdown

VisIt is an open source, turnkey application for scientific data analysis and visualization that runs on a wide variety of platforms from desktops to petascale class supercomputers. This talk will provide an overview of Python’s role in VisIt with a focus on use cases of scripted rendering, data analysis, and custom application development.

Python is the foundation of VisIt’s primary scripting interface, which is available from both a standard python interpreter and a custom command line client.  The interface provides access to all features available through VisIt’s GUI. It also includes support for macro recording of GUI actions to python snippets and full control of windowless batch processing.

While Python has always played an important scripting role in VisIt, two recent development efforts have greatly expanded VisIt’s python capabilities:

1)  We recently enhanced VisIt by embedding python interpreters into our data flow network pipelines. This provides fine grained access, allowing users to write custom algorithms in python that manipulate mesh data via VTK’s python wrappers and leverage packages such as numpy and scipy. Current support includes the ability to create derived mesh quantities and execute data summarization operations.

2) We now support custom GUI development using Qt via PySide. This allows users to embed VisIt’s visualization windows into their own python applications. This provides a path to extend VisIt’s existing GUI and for rapid development of streamlined GUIs for specific use cases.

The ultimate goal of this work is to evolve Python into a true peer to our core C++ plugin infrastructure.

This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 (LLNL-ABS-552316).

Comment:

production notes

<?xml version='1.0' encoding='UTF-8'?>
<ns0:entry xmlns:ns0="http://www.w3.org/2005/Atom"><ns0:category scheme="http://schemas.google.com/g/2005#kind" term="http://gdata.youtube.com/schemas/2007#video" /><ns0:category label="Education" scheme="http://gdata.youtube.com/schemas/2007/categories.cat" term="Education" /><ns0:category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="enthought" /><ns0:category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="scipy_2012" /><ns0:category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="Visualization" /><ns0:category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="CyrusHarrison" /><ns0:category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="HarinarayanKrishnan" /><ns0:id>http://gdata.youtube.com/feeds/api/videos/0e4TTcswqLg</ns0:id><ns0:author><ns0:name>NextDayVideo</ns0:name><ns0:uri>https://gdata.youtube.com/feeds/api/users/NextDayVideo</ns0:uri></ns0:author><ns0:content type="text">Cyrus Harrison, Harinarayan Krishnan</ns0:content><ns0:updated>2012-08-02T22:55:28.000Z</ns0:updated><ns0:published>2012-08-02T22:55:28.000Z</ns0:published><ns1:comments xmlns:ns1="http://schemas.google.com/g/2005"><ns1:feedLink countHint="0" href="https://gdata.youtube.com/feeds/api/videos/0e4TTcswqLg/comments?client=ndv" rel="http://gdata.youtube.com/schemas/2007#comments" /></ns1:comments><ns1:group xmlns:ns1="http://search.yahoo.com/mrss/"><ns1:keywords>enthought, scipy_2012, Visualization, CyrusHarrison, HarinarayanKrishnan</ns1:keywords><ns1:description type="plain">Cyrus Harrison, Harinarayan Krishnan</ns1:description><ns1:title type="plain">Python's role in VisIt</ns1:title><ns2:duration seconds="0" xmlns:ns2="http://gdata.youtube.com/schemas/2007" /><ns1:content duration="0" expression="full" isDefault="true" medium="video" type="application/x-shockwave-flash" url="https://www.youtube.com/v/0e4TTcswqLg?version=3&amp;f=user_uploads&amp;c=ndv&amp;d=Aarb2r5skm2_yNTuKEinXdAO88HsQjpE1a8d1GxQnGDm&amp;app=youtube_gdata" ns2:format="5" xmlns:ns2="http://gdata.youtube.com/schemas/2007" /><ns1:thumbnail height="360" time="00:00:00" url="http://i.ytimg.com/vi/0e4TTcswqLg/0.jpg" width="480" /><ns1:thumbnail height="90" time="00:00:00" url="http://i.ytimg.com/vi/0e4TTcswqLg/1.jpg" width="120" /><ns1:thumbnail height="90" time="00:00:00" url="http://i.ytimg.com/vi/0e4TTcswqLg/2.jpg" width="120" /><ns1:thumbnail height="90" time="00:00:00" url="http://i.ytimg.com/vi/0e4TTcswqLg/3.jpg" width="120" /><ns1:category label="Education" scheme="http://gdata.youtube.com/schemas/2007/categories.cat">Education</ns1:category><ns1:category scheme="http://gdata.youtube.com/schemas/2007/developertags.cat">enthought</ns1:category><ns1:category scheme="http://gdata.youtube.com/schemas/2007/developertags.cat">scipy_2012</ns1:category><ns1:category scheme="http://gdata.youtube.com/schemas/2007/developertags.cat">Visualization</ns1:category><ns1:category scheme="http://gdata.youtube.com/schemas/2007/developertags.cat">CyrusHarrison</ns1:category><ns1:category scheme="http://gdata.youtube.com/schemas/2007/developertags.cat">HarinarayanKrishnan</ns1:category><ns1:player url="https://www.youtube.com/watch?v=0e4TTcswqLg&amp;feature=youtube_gdata_player" /></ns1:group><ns0:title type="text">Python's role in VisIt</ns0:title><ns1:control xmlns:ns1="http://purl.org/atom/app#"><ns1:draft>yes</ns1:draft><ns2:state name="processing" xmlns:ns2="http://gdata.youtube.com/schemas/2007" /></ns1:control><ns0:link href="https://www.youtube.com/watch?v=0e4TTcswqLg&amp;feature=youtube_gdata" rel="alternate" type="text/html" /><ns0:link href="https://gdata.youtube.com/feeds/api/videos/0e4TTcswqLg/responses?client=ndv" rel="http://gdata.youtube.com/schemas/2007#video.responses" type="application/atom+xml" /><ns0:link href="https://gdata.youtube.com/feeds/api/videos/0e4TTcswqLg/ratings?client=ndv" rel="http://gdata.youtube.com/schemas/2007#video.ratings" type="application/atom+xml" /><ns0:link href="https://gdata.youtube.com/feeds/api/videos/0e4TTcswqLg/complaints?client=ndv" rel="http://gdata.youtube.com/schemas/2007#video.complaints" type="application/atom+xml" /><ns0:link href="https://gdata.youtube.com/feeds/api/videos/0e4TTcswqLg/related?client=ndv" rel="http://gdata.youtube.com/schemas/2007#video.related" type="application/atom+xml" /><ns0:link href="https://gdata.youtube.com/feeds/api/users/nextdayvideo/uploads/0e4TTcswqLg?client=ndv" rel="self" type="application/atom+xml" /><ns0:link href="https://gdata.youtube.com/feeds/api/users/nextdayvideo/uploads/0e4TTcswqLg?client=ndv" rel="edit" type="application/atom+xml" /></ns0:entry>