Mailman 3 July 2009 - yt-dev

yt timing function
by Stephen Skory July 27, 2009

July 27, 2009

Hi, What do we think is the best way to go about adding a very basic benchmarking tool to yt? Right now my thought is to simply add to mylog 'benchmark'. For each part you wanted to benchmark you'd wrap it with two statements: mylog.benchmark('start complicated mess') ... mylog.benchmark('end complicated mess') Instead of printing this to stderr/out, it would go to a standard file, or something that could be easily analyzed by a simple function. The nice thing about using mylog is Matt has already got processor labels working, and it has timestamps. It would be therefore also trivial to have nested benchmarked sections, etc... Thanks for your comments! _______________________________________________________ sskory(a)physics.ucsd.edu o__ Stephen Skory http://physics.ucsd.edu/~sskory/ _.>/ _Graduate Student ________________________________(_)_\(_)_______________

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Divergence of the yt-1.5 and trunk source lines
by Matthew Turk July 17, 2009

July 17, 2009

Hi everyone, It's come time to start moving stuff into the trunk, as opposed to just being in mercurial. This means the trunk will become a faster moving target. Bug fixes need to be committed to both yt-1.5 and yt if they are to be made. The following things will be moved into trunk: * Integer covering grids replacing standard covering grids; smoothed integer covering grids are not ready, so they will default back to floating point math. * Fixed resolution projections * Next-generation GUI including inline VTK support. Additionally, I will be targeting the hierarchy optimization more heavily as well as a generalization of the floating point type used for baryon fields and positioning. Documentation is proceeding apace, and I have constructed most of a cookbook, which I will be properly presenting later this weekend. -Matt

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Quick question about CUDA and GPUs
by Matthew Turk July 17, 2009

July 17, 2009

Hi guys, Can I get a show-of-hands -- 1. How many of you have access to GPUs that support CUDA? 2. How many of you have installed or CAN install PyCUDA? Thanks! -Matt

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kD-tree for particles onto grids
by Matthew Turk July 15, 2009

July 15, 2009

Hi Stephen (et al), I'm interested in taking particle-only data and putting it into a regular, multi-level grid structure that has yet to be created. I think using a kD-tree, where we specify a maximum number of particles in a given region, could be used to identify regions that should be covered by grids. Do you think that your kD-tree code would be suitable for this? -Matt

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Code review for new features in RavenPlot.set_zlim
by Britton Smith July 10, 2009

July 10, 2009

Hi all, Adam Ginsburg, a grad student here at CU who does not work with yt, was kind enough to add some nice features to set_zlim in RavenPlot, which are the plots held in the PlotCollection. These features add some flexibility to adding ticks to the colorbars on images. Since he's not a regular yt user, I've submitted a code review on his behalf. Please, check it out and leave comments here, if you have any: http://review.enzotools.org/r/15/ Normally, an email would be automatically sent, but there was a small error. Matt is fixing that now. Britton

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Cookbook
by Matthew Turk July 9, 2009

July 9, 2009

Hi guys, After [chatting with / getting chewed out by] Brian, it's become clear to me that while we have barely passable narrative documentation, the cookbook is sorely lacking. I'd like to start a brainstorming over what would be good to go in a cookbook. I will use a sample dataset as input into a number of things and then, in the documentation, include both the images and the scripts inline for people to view. Additionally, these will all be accessible somehow by automated download -- but I haven't quite worked the specifics of that out yet. I am thinking along the lines of: $ yt cookbook slices and then have that spit something out into stdout, which it'll grab off the web. (I'm toying with different ways of doing this.) Anyway, can we get some discussion of the right things to include in such a cookbook? I'm thinking the following: simple slices simple projections simple phase plot of a sphere simple radial profile of a sphere cutting plane overplotting contours on a slice overplotting grid lines on a slice quiver plot Most of these are maybe one or two lines, so please feel free to suggest other "simple" things as well as much more complicated ones. I'd really like some feedback on this, so I have a good idea on what *should be included*, y'know? What else should be in there? -Matt

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Callbacks & VMPlot change review request
by Matthew Turk July 2, 2009

July 2, 2009

Hi guys, I've updated the VMPlot type, for slices and projections, to use a different method of setting the data. This should enable MUCH more ease-of-use with callbacks, for instance, and also some speed increase. If two of you could grab the diff, apply it and see if it works for oyu in your standard tests, that'd be awesome. If it does, just click on "Review" on this page and then "Ship It" and I'll commit it. http://review.enzotools.org/r/14/diff/ Thanks! -Matt PS I am liking review board. Email notifications are going to be set up shortly

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