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Empty eplusout.err File

asked 2021-05-07 12:55:23 -0500

Draza gravatar image


I'm working on a OpenStudio Energy Model as a school project. My team and I have finished most of the model but received different errors that prevented the simulation from running. Using this forum as a resource, we were able to work through most if the errors that we received, but after running the model the last time, the .err file was blank and the model failed to run. I am unsure where to go next. What could be the reason for the .err file to be left blank? The model is a two story classroom/laboratory building. We are using Ideal Air loads for the initial analysis.
Here is a google drive link to the model. OSModel Thank you

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If this is a school project, I can volunteer a couple of hours! Send me an email to

Luis Lara gravatar image Luis Lara  ( 2021-05-07 14:31:26 -0500 )edit

Just sent it. Thank you!

Draza gravatar image Draza  ( 2021-05-07 15:43:51 -0500 )edit

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answered 2021-05-08 17:29:05 -0500

This specific problem was related to the OpenStudio model having over 200+ DefaultConstructionSet objects. We found out that this was added due to how the team was working in parallel in the project and then tried to combine the problem.

The solution was to run the remove method on all the DefaultConstructionSetobjects with the command line. Some of the red flags where

  • The building was only 40,000 sf, but the osm had over 100k lines.
  • EnergyPlus was crashing right at the beginning, so I suspected it was related to the section where the CTF values.

I think this is an EnergyPlus bug (it ideally should handle all of those construction sets, but maybe there are some memory allocation restrictions currently. In a real world scenario, we would not have that many construction sets.

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Asked: 2021-05-07 12:55:23 -0500

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Last updated: May 08