Product images of X3200, K800 and E+Pi series
We can help you develop your own solutions with our technologies.
You can start using JESS with the trial account included in the JESS Client. If you are ready to move forward, please use this form to send us a request for your own JESS account.
JESS stands for Java EnergyPlus Simulation Server. It is a software system we have developed to provide remote simulation solutions to EnergyPlus users. JESS Online is the online service with which you can run time-consuming simulation jobs on our high-performance computers. Not only it will free up your computer for other tasks while you are waiting for the results, but running simulations on JESS will also return you results quicker in most cases. Especially, with JESS's acceleration method, simulations can be 5-10 times faster than a standard run. This will let you do a lot more analysis using the model and hence producing better designs.
Why use online simulation?
Online simulation is an emerging technology for architectural design and engineering fields. It gives you the ability to access fast computing resources to run multiple simulations in parallel, and lets you do more creative works while waiting for the results. It enables a whole new workflow of handling models and let you do things that were "impossible" before.
What is the advantage of JESS?
JESS started its life in 2011 and has grown into probably the most reliable and mature online EnergyPlus simulation service available. To date, it has been tested by over 600 users and executed nearly one million hours of simulations. Performance and compatibility are the key advantages of JESS. We use only the standard releases of EnergyPlus (all versions from 7.0 and above) to ensure the best compatibility. Even with the acceleration method, the results produced by JESS are faithful and compatible with the standard outputs in the majority of cases.
How much does it cost?
The JESS service is charged at a flat rate of £0.25 (ex. tax) per hour of computing time. You will be invoiced on a "pay-as-you-go" basis, which means you only pay for what you have used. If you just want to test the system and see how it works, you can get a trial account with 5 hours of simulation time free of charge.
How to get started?
JESS is supported by a number of building simulation tools. For example, DesignBuilder has built-in JESS support for both standard/accelerated simulation and optimisation runs. You may also download the standalone JESS Client program, which lets you connect to JESS from all sorts of tools including OpenStudio, EP-Launch, Matlab, and so on. To get started, please first fill in the form for requesting a JESS account.
Getting started with JESS is straightforward. All you need is a JESS client or a building simulation tool already supporting JESS.
The latest version of DesignBuilder software has the JESS support built-in. The animation above shows how you can set up a simulation to be run on JESS with only a few clicks. To test the service, you can use the trial account and do not need to send any personal information to us. The trial account gives you 5 hours of computing time, which is enough for thousands of runs of a simple model, or a few large models.
If you are using EnergyPlus with other tools or in your own development, the JESS Client can normally replace the local simulation command and give you the remote simulation capability. You can find more details of the JESS Client on its manual pages. Detailed examples are provided for using it with GenOpt, EP-Launch, Matlab and other tools. You can download the JESS Client package here.
New users of JESS can request a free trial account directly from the JESS Client GUI. No registration or personal details are required. This temporary account gives you 5 hours of computing time, and you can start testing the service straight away.
Click on the screenshot below to access the JESS web portal for users. You need your own JESS account to access the user's portal.
JESS Online of ENSIMS is a reliable and easy-to-use service that offers you a cost-effective solution to your simulation computing needs. Here is a summary of the main features.
During our research and development, we have made every effort to optimize the hardware and software platform in order to achieve the best simulation speed. As you can see in the performance tests, our system consistently outperforms the best instance available on the public clouds (Amazon AWS EC2 as tested). This means you can get the results back quicker from JESS Online than anywhere else.
Using JESS does not require any special knowledge about networking, remote simulation or cloud computing. With the building simulation tools have already JESS support implemented, the process is as simple as getting an account (or using a free trial account) and log on. All your existing workflows may remain the same. Unlike most of the cloud services, you do not need to worry about setting up keys, starting and terminating computing nodes, or managing separate accounts. Usage of JESS Online is charged by the actual computing time of the simulation jobs. You can check your usage and the progress of the on-going jobs with the online user's portal.
JESS Online does not tie you to one building simulation tool. In fact, we are working to support as many building simulation tools as we can. At the present, this service supports only EnergyPlus, Radiance and Daysim simulations. More simulation engines will be added in the future. Our support team is friendly and eager to help you with your problems and requests.
Another significant advantage of JESS is its native support for jEPlus projects. This provides an ideal solution for consultancy and research works where large-scale parametric analysis, uncertainty/sensitivity analysis and optimisation are used. We are here to support your development and help you create customized solutions for your particular tasks.