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2018-10-30 11:37:15 -0500 | received badge | ● Notable Question (source) |
2018-07-05 06:58:45 -0500 | edited answer | Increase 5 phase sun positions for ms windows I was surprised that this works, but the Ubuntu 16.04 available as a free download through the Windows 10 app store actu |
2018-07-05 06:52:21 -0500 | edited answer | Increase 5 phase sun positions for ms windows I was surprised that this works, but the Ubuntu 16.04 available as a free download through the Windows 10 app store actu |
2018-07-05 06:46:39 -0500 | answered a question | Increase 5 phase sun positions for ms windows I was surprised that this works, but the Ubuntu 16.04 available as a free download through the Windows 10 app store actu |
2018-06-20 02:56:30 -0500 | answered a question | rpict : warning - new output file "P40_1230.pic" It appears that there is no pipe between pcond and ra_t16. If your aim is to just get to the tga file in the end, you ca |
2018-06-18 11:21:28 -0500 | received badge | ● Teacher (source) |
2018-06-18 09:03:59 -0500 | answered a question | genBSDF in Windows 10 Are you sure that your perl installation is correctly setup? Both falsecolor and genskyvec are working for me on Windows |
2017-09-05 18:14:12 -0500 | received badge | ● Popular Question (source) |
2015-10-12 12:59:54 -0500 | commented answer | run oconv with standard input from process within C# Mostapha, who commented above, has created a fairly sophisticated wrapper/add-on for Radiance within his Honeybee plugin. Although it is written in Python for the most part, you can get a fair idea of what it takes to make Radiance work within such an environment...if you haven't already, check out..http://www.grasshopper3d.com/group/ladybug |
2015-10-12 12:57:33 -0500 | commented answer | run oconv with standard input from process within C# Python has a module to launch processes similar to what you are doing in C#. However, I found that its not always a good idea to implement piping with a wrapper. Sometimes it just makes sense to let Radiance and DOS-shell do their thing than transporting binary data (as in the case of Oconv) between different processes. You can write the commands to a .bat file and then launch the .bat file with your code in C#. You can always interrupt/intercept a .bat file by using the wait method to do any data processing in between. |
2015-10-11 16:31:27 -0500 | commented answer | What are some good resources to learn EnergyPlus? Thanks ! Somehow I didn't notice the link for lecture slides on the support and training webpage..That was the kind of info that I was looking for... |
2015-10-10 20:04:59 -0500 | asked a question | What are some good resources to learn EnergyPlus? I have a basic idea of building physics and I have run simple energy plus simulations in the past. I just completed Chris Mackey's tutorials on using EnergyPlus with Grasshopper/Honeybee. Other than that I am aware of NREL's tutorials on using EnergyPlus with OpenStudio and also the videos from GARDAnalytics on youtube. Since there are several veteran Energy modelers and Energy Modeling software developers active on this forum I am hoping that someone would point me to the resources (textbook, videos, presentations etc) that cover EnergyPlus and also the underlying concepts/calculations that are employed for simulating energy models in EnergyPlus? (I know that EnergyPlus has a fair amount of official documentation online but considering the volume and scale of information present in those manuals, I am not sure if diving straight into them is the best approach for a novice like me). |
2015-10-09 14:35:30 -0500 | answered a question | run oconv with standard input from process within C# Are you sure that you aren't getting an oconv error ? You can troubleshoot your code by redirecting the stdout of oconv to a file. Then try and run rpict from command line using the same file that you wrote to in your C# code to see if your octree did get created without errors. I have gotten the "fatal: truncated octree" error in the past due to incorrectly arranging materials in my files. See below: The file works fine... While the file below won't work |
2015-10-07 19:53:14 -0500 | received badge | ● Commentator |
2015-10-01 16:23:13 -0500 | commented answer | How does one correct errors related to truncated images ? @Greg Yes, the errors arose from rpict being killed and not rpict itself. I had run the previous simulation again from scratch and ran into the same issue with the process being terminated. Thanks for the tip about a competing script to pick up where things were terminated. I don't know enough bash/shell scripting to do that at the moment but I will it figure out... |
2015-10-01 12:37:34 -0500 | commented answer | How does one correct errors related to truncated images ? @Greg The error was with rpict and the system admin had a script to kill of all processes after x number of hours. I ran the simulations with medium settings and everything worked out normally. |
2015-09-30 15:43:22 -0500 | commented answer | How does one correct errors related to truncated images ? @Andy I agree with everything you mentioned. At my university, the linux cluster, the production nodes specifically, has mostly been monopolized by people from pure sciences, computing and statistics. For the rest of us, batch jobs are prioritized based on the number of cores, run-time and memory requested (in that order). In the past, I have scheduled scripts with as less as 4 processors and 2 hours and found that it never got picked up for processing. So, the interactive cluster, which is mostly idle, despite its limitations, is my best bet. |
2015-09-30 14:21:10 -0500 | commented answer | How does one correct errors related to truncated images ? It is possible that processes were killed by a system admin. The cluster that I used is an interactive cluster that is meant for "short jobs" although I am not sure what time interval qualifies as a short job ( no documentation). In the past I have never run into renderings that took more than 10 hours. I am going to make a clean break and try and render this again. Is there a way to debug or track a rendering processes during runtime ie to know if it will render at all ? Secondly, is there a likelihood of something like total internal reflection happening and light rays not escaping ? |
2015-09-30 13:36:40 -0500 | commented answer | How does one correct errors related to truncated images ? Hi Greg, thanks for the insights. My ulimit is unlimited and huponexit is set to off. I have updated my post with system configuration, shell options as well as file sizes. I don't have enough experience with Unix systems to decipher which option means what. So I have pasted everything in the post. I ran the renderings on a linux cluster. The renderings that did render without errors rendered within 6 or 7 hours. The remaining kept growing in size but did not complete. I think I might have gotten logged off once but the processes kept running even after I got logged off. |
2015-09-29 20:23:02 -0500 | commented question | How does one correct errors related to truncated images ? I wasn't aware about the -ro option. I have the directory structure intact, so I will try and run the renderings from where it got truncated. Radiance was compiled from source through the NREL repository on github. As far as I know there isn't a time limit on processes but I could be wrong about that. I was asking about the materials because the error log shows that in one case only 6.9 % rays were traced after nearly 16 hours. Update: I was running mulitple simulations at the time so I got the systems mixed up in the last comment.. the renderings were run on a linux cluster..details above |
2015-09-29 19:52:06 -0500 | commented question | How does one correct errors related to truncated images ? Andy, I have updated my question with the error messages that I found. There were a whole lot warnings due to vertices being non-planar. I haven't pasted those above. I had earlier rendered the same views with gensky and that worked out fine. Do the errors have anything to do with the fact that my luminaires were underneath a dielectric material ? The surface normals of the dielectric were facing outwards i.e away from the luminaires. |
2015-09-29 19:47:58 -0500 | received badge | ● Editor (source) |
2015-09-29 13:36:54 -0500 | asked a question | How does one correct errors related to truncated images ? I was trying to understand the new photon mapping extension and tried rendering a bunch of views using the RAD program. My settings were: I ran into errors after the images finished rendering. A screenshot of my terminal is below. Error messages are in the lower part of the image: I tried running pfilt on the images and found that almost all the images that were unfinished were truncated in the vertical axis. Some of the images, all of which are supposed to be of the same dimensions, are below: I got The errors/warnings from the logfile are below: Update (10/01): The issue, as everyone pointed out, was with my rpict renderings getting killed. I ran the renderings with lower settings and everything worked out fine. |
2015-09-23 21:05:32 -0500 | marked best answer | Is there a best practice of some sort for setting the ZONE= parameter in a .rif file ? I am trying to render multiple scenes inside and outside a room using the rad program. Interior and exterior scenes are handled in separate runs and the view files for each case are different as well. The room is surrounded by 3d shapes that are proxies for buildings. Is there a way that I can get the values for x,y,z coordinates that follow the I or E after ZONE= ? My geometry is split into separate files according to material type. I am currently getting the coordinates through getbbox. For example, !getbbox interiorwalls.rad ceiling.rad floor.rad #for interior scene !getbbox Scene.rad #for exterior scene.Scene.rad references the entire geometry using xforms. I understand that I can measure the coordinates manually in the 3d model, however, I was just curious to know if there is a shortcut and if getbbox is indeed the way to go. Thanks, Sarith |