Published 1

So, last month, I presented a paper at SimBuild 2010. Today, the lab I work for published a link to the preprint, which enters me into the scientific roll call. I am stoked. Check it out: http://www.nrel.gov/docs/fy10osti/47522.pdf

Radio Radiance

Last Thursday, I hit the airwaves, yakking about lighting simulation. For some reason the Boulder Green Building Guild was interested in my take on the use of simulation in optimizing the energy efficiency of building designs in the US, on the latest installment of Footprint Radio. It was a thrill to share the half-hour with ...

I don’t get it. 1

Once again, I have had a humbling experience working with Radiance. Just when you think you know even a little bit about this program, you are told otherwise, simply by attempting to learn more about it. Details here: initial results with rtrace’s multiprocessing feature 9QM93TAVDT59

rtrace multiprocessing option – initial test results

I have had a chance to test out the new multiprocessing option (-n) for rtrace — introduced in the Radiance HEAD distribution on Dec 15, 2009 — and am not getting the results I anticipated. This page includes my assumptions and results (and questions!). I had assumed that simulation (real) times would decrease as I ...

Blast from the Past 2

(light transport simulation geekery alert) Freshly inspired from the recent Radiance Workshop, and cooped up under 22 inches of snow in Boulder, yesterday I took an old web page I created and integrated it into my website. It’s a summary of my first foray into the use of illums on a project. This page dates ...

Speedy

3421 seconds. That’s how long it took my new laptop to render the de facto radiance benchmark scene. That’s good enough for 13th place on the list, not bad for a laptop marketed to college kiddies and soccer moms. My old laptop is 36% slower in this test, and cost me $700 more than my ...

Lumen Awarded 9

A former co-worker just IM’ed me to let me know that a project I worked on has received two Lumen Awards for exemplary lighting/daylighting design. I am pretty psyched, since to date these are my first two Lumens in my 15 year career in lighting. Awards are stupid, until you win one. Yay! Looking back, ...

In the Company of Giants 3

I think that when you appear in the release notes for this software, you are officially a geek. Scroll down a ways, through all kinds of compu-lighting-geekery, and you will discover that yours truly has added a tiny piece of functionality to a fantastically complex piece of software, software that excels at modeling the ultimate ...

ltview: a Radiance utility

Radiance User: “Boy, that objview script sure is handy for looking at scene geometry; if only there was something like that for looking at the distribution of my light source files.” Announcer: “Well, THE WAIT IS OVER!! That’s right, now there’s a script that has the ease of use of objview, but is scientifically engineered ...

Trans flowchart

Hi. Miss me? So, for the last week or so I have been struggling to understand some screwy results I’ve been getting with Radiance, using the trans material to emulate some sun control shades. After a flurry of emails today from the very talented membership of the radiance-online.org mailing list, I think I have been ...