Run the Project on Amazon Web Services

Switch to the Run tab. The selection will initially be on “Run Locally” with an error message stating that you cannot run algorithmic analyses locally. Select “Run on Cloud” and change Remote Server Type to “Amazon Cloud” to set up your run environment.

AWS Credentials

First, you will need some AWS credentials to allow PAT to start compute instances in the cloud. Go to and click the button to create an AWS Account and add a payment method for billing. You will also need to create access keys for your AWS account. When you have your AWS Access and Secret keys, click on the New button in the AWS Credentials box in PAT and enter your keys. Also, make sure to enter your AWS UserID on the main run screen.

Cluster Settings and Starting the Cluster

Ensure that your project’s AMI selection matches “2.8.0” (this should also be the version of OpenStudio/PAT that you are using). We will leave most of the rest of the settings at their defaults, but because we’re doing a small analysis here, we’re going to set the number of worker nodes to zero. For guidance on cluster settings for your analysis including instance selection and worker nodes see AWS Cluster Configuration.


Click Save Cluster Settings and the Start button next to the Cluster Status label. Wait for the cluster to start. The cloud icon will turn green when it is ready. It can take up to 10 minutes.

Run Analysis and Monitor Status

When the cluster is running, start the analysis by clicking the Run Entire Workflow button below the server settings. You will see a status bar and messages. Once it says “Analysis Started” you can click the View Server button to see the status of your analysis on the OpenStudio Server.


Leave the PAT application open while your analysis runs. It could take a while.

Download results

Eventually PAT will show in the status bar “Analysis completed”. And the OpenStudio Server console will show the same.

../_images/os_server_complete.png ../_images/pat_complete.png

Clicking the View Results button in PAT will open the results.csv file for your analysis. It contains a row for every sampled building including all options selected for that building and annual energy simulation results. Often this is the only results you will need. That file is saved in your project in localResults/results.csv.

Sometimes you will need all the simulation results including timeseries results if you requested them. Clicking the Results (cloud, down arrow) button will pull down all of the simulation results from the server and save them to your project. Each result datapoint will be stored in a localResults/[GUID] folder in your project.


Downloading all simulation results can be a lot of data. Make sure you’re on a good connection and have enough room on your local machine. Be prepared for the download to take a while.


To download all datapoints, including the timeseries csv output for each simulation, run the scripts/download_datapoints.rb script using the OpenStudio CLI. The script requires that the Timeseries CSV Export reporting measure be included in your PAT project. Supply all required arguments to the script, including project directory, server DNS, and analysis ID. A usage example is given as follows: $ /c/openstudio-2.8.0/bin/openstudio.exe scripts/download_datapoints.rb -p project_resstock_national -s -a 706c3b4a-9685-4924-bb13-c6bec77aa397 Additionally, the script has an optional argument to unzip each datapoint zip file on the fly.

Shutting Down the OpenStudio Server Cluster

Once you have retrieved all the data you need from your analysis, it is a good idea to shut down the OpenStudio Server Cluster to stop incurring AWS costs. The most straightforward way to do that is to click the Terminate button on the Run tab of PAT.


The PAT interface will indicate that the cluster has been shut down after a moment. Just to be sure, it’s best to open the AWS cloud console either by clicking the View AWS Console button in PAT or visiting Select “Services” > “EC2”. Select “N. Virginia” in the region menu (upper right). You should see a terminated instance of OpenStudio-Server and potentially some workers if you chose to use workers above.


If it has been long enough the list will be empty. If for some reason the instances are still running, you can terminate them by right-clicking and selecting “Terminate”. If PAT has been closed or crashed, this is how you will have to shut down the cluster.