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JRR wrote; If you're concerned about single threaded speed then you should look for an Intel XEON CPU system with 800 mhz front side bus. These CPUs were produced as high as 3.8 Ghz, the internal data paths are basically twice as wide as a Pentium 4, and with proper cooling etc. the 3.6 GHz and 3.8 Ghz chips will run well North of 4.3 Ghz. These are 130 w parts at stock speed and you will be blowing 170+ w up each CPU -- most of these systems are dual socket and you have to have a matched pair so >>> most have 2 CPU chips installed. Intel's primary motherboard for this generation of XEON requires at least a 650 w power supply at stock speeds...... Boot time with a Barracuda RAID is truly impressive, run times as well. Don't forget low latency memory !!!! Unfortunately these chips have had almost no depreciation in the marketplace and will run you over $1500 for a matched "unlocked" pair on E-bay..... that's just the chips. bye.... Michael J. Witte wrote: Execution time depends greatly on the types of features in the model - daylighting, number of surfaces, number of zones, number of HVAC systems, natural ventilation, etc. An annual simulation of the LgOffVAV example file (16 zones, served by one VAV air handler) takes 5-6 minutes on a 2.1 GHZ machine with 2 GB memory. If you find execution speed to be an issue, CPU speed and adequate RAM are important. RAM requirements change on the fly depending on what is in the simulation. You can use the Windows Task Manager to monitor memory requirements. Generally 2GB should be more than adequate. Dual-cores do not help much, since EnergyPlus is not capable of using more than one core. >From a modeling perspective, keep it simple, as few zones as necessary, as few surfaces, as necessary, and only model the features that are important to the task at hand. Mike EnergyPlus uses one CPU core, so dual-core wil On 1 Oct 2007 at 16:06, meet_pruthvi wrote:Hi All, I am concern about.. How much time it would take for simulating Energy analysis for an average complexity Building in EnergyPlus program. What is the computer configuration required for completing the simulation in a reasonable amount of time. 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 not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site. EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button. Yahoo! Groups Links======================================================== Michael J. Witte, GARD Analytics, Inc. EnergyPlus Testing and Support EnergyPlus-Support@xxxxxxxx ====================================================== You received this e-mail because you are subscribed to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe from this mailing list send a blank message to BLDG-SIM-UNSUBSCRIBE@xxxxxxxx |