Britton has just submitted a pull request to bring LightCone and LightRay up to date with the current parallelism strategy. He asks a few questions that others on this list may have thoughts on; I will be leaving mine in a comment on the PR.

Thanks, Britton!

---------- Forwarded message ---------- From: Britton Smith pullrequests-noreply@bitbucket.org Date: Mon, Jul 23, 2012 at 11:01 PM Subject: [yt_analysis/yt] Modernized LightCone and LightRay (pull request #214) To: matthewturk@gmail.com

A new pull request has been opened by Britton Smith.

brittonsmith/yt has changes to be pulled into yt_analysis/yt.

https://bitbucket.org/yt_analysis/yt/pull-request/214/modernized-lightcone-a...

Title: Modernized LightCone and LightRay

Major changes to the infrastructure supporting the LightCone and LightRay: 1) The LightCone and LightRay generators have now been switched over to the new SimulationTimeSeries so that they can now, in principle be used with other simulation codes. This will require other frontends to add code similar to what's yt/frontends/enzo/simulation_handling.py. 2) Both the LightCone and the LightRay are now parallelized using the parallel_objects function, so they can be used much more flexibly with multi-level parallelism. This also removes the direct mpi4py imports from LightRay. 3) LightCone and LightRay, along with there supporting superclass CosmologySplice, have been moved to yt/analysis_modules/cosmological_observation.

This code has been heavily tested and retains all pre-existing functionality, plus a few more things that will be mentioned in the documentation and cookbook recipes that will be updated shortly.

Before accepting this PR: 1. Are people happy with the new location: yt/analysis_modules/cosmological_observation? I believe that all of this code belongs in a subdirectory together but that was the best name I could come up with. 2. The old EnzoSimulation (yt/analysis_modules/simulation_handling) class still exists, but it is no longer a dependency for anything, and is totally replaced with the new EnzoSimulation in yt/frontends/enzo, which is totally superior. Can I remove this now or should it be deprecated and scheduled for removal at a later date?

Changes to be pulled:

cd09f872c174 by Britton Smith: "Merged." f7bc036677fd by Britton Smith: "Merged." a303d6f14a33 by Britton Smith: "Changing cosmology subdirectory to cosmological_observation and adding imports t…" b3c9210bf072 by Britton Smith: "Added LightRay to api file." b764002ef788 by Britton Smith: "Modernized the light ray generator and moved it to a new home. The direct mpi4py…" 41f4117f4613 by Britton Smith: "Moving light ray to the cosmology subheading." 9604d5d6187a by Britton Smith: "Adding setup for cosmology module." 6475d956eec7 by Britton Smith: "Removing light cone generator from setup." 304187324667 by Britton Smith: "Removing old light cone generator." c9a318592c97 by Britton Smith: "Cleaned up unique light cone generator." 29aa8b84169c by Britton Smith: "Adding keyword to halo mask to specify the virial overdensity to be used to calc…" bdf0cc5fa462 by Britton Smith: "Changing some more variable names." f7b9c8466b13 by Britton Smith: "Parallelized light cone halo mask with parallel objects and simplified code cons…" 042624ea193e by Britton Smith: "Continued cleanup of light cone halo mask and changed light cone variable to low…" 68472c735864 by Britton Smith: "Fixed some style conventions in light cone and began fixing light cone halo mask…" 92a989d572f3 by Britton Smith: "Switched lightcone generator from being a subclass of TimeSeriesData to using pa…" 64e5330fd707 by Britton Smith: "Merged." c7c2fcaa10b1 by Britton Smith: "Changed EnzoSimulation.get_time_series to allow further selection with find_outp…" 1125ca16272c by Britton Smith: "Adding files for new light cone into analysis_modules/cosmology. There is curren…" 5656cf35de29 by Britton Smith: "Removed enzoisms from cosmology splice." db5ec44e0121 by Britton Smith: "Changed absorption spectrum generator to increase the wavelength window until th…" 1baa32f77c80 by Britton Smith: "Fixed bug in voigt profile generator that was causing damping wings to only be a…" be28c6705909 by Britton Smith: "Adding files for CosmologyTimeSeries." 7acc4cace811 by Britton Smith: "Changed EnzoSimulation.get_time_series to allow further selection with find_outp…"

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