There is severe error about incorrectly connected node in the HVAC system model. See http://server2.ensims.com:2995/ServletJESSadmin/jobview.html?ID=14413, and go to the "download results" tab, then "eplusout.err", line 113. I guess it caused the convergence warnings, therefore the longer simulation time... Yi From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] Hi My energyPlus runs are extremely slow. Couple of things: 1. Timestep - 1 2. Solar distribution: Full exterior Inititally it was taking 2-3 minutes for simulation but now it has been changed to 30-45 minutes. Can someone please let me know the reason? I am also attaching the file. Thanks Harshul Singhal __._,_.___ Posted by: "Dr Yi Zhang" <yi@xxxxxxxxxx> Primary EnergyPlus support is found at: http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx The primary EnergyPlus web site is found at: http://www.energyplus.gov The group web site is: http://groups.yahoo.com/group/EnergyPlus_Support/ Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files. EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button. __,_._,___ |