Command Line Runner

The riversystem.commandline.exe provides a mechanism to run existing projects without the Source interface. It is possible to modify or change the behaviour of the project from the command line, by changing the values of global expressions. Results can be returned for recorded items or global expressions within the project.

 riversystem.commandline.exe is included with Source.

The command line is used where it is impractical to run Source from the main user interface. For example, the command line can be used for batch runs, where Source is run many times with a range of different parameter values. The command line can also be used in optimisation scenarios and when integrating Source with other models or business systems.

The command line can be used in either a standalone (in-process) mode or in a client/server configuration. When run in client/server mode, the Source project is loaded and run at the server side, with parameters provided by and results through a separate client. In this way, the server can be used for many runs of the same project, without needing to reload the project file each time.

Configuring a scenario from the command line

Any valid Source project can be used with the command line, but to modify behaviour of the model, you must configure global expressions, which can be modified from the command line and alter the model’s behaviour in some way.

Figure 1 illustrates the process of manipulating the operating target for a storage from the command line, by manipulating a global expression, $x. This must first be specified in terms of an expression, which must reference $x. Global expressions can be used to manipulate the model in this way, either before the start of the simulation, or before each time-step.

The Metaparameter explorer (Metaparameter Explorer) can be used to attach global expressions directly to model variables for situations where the expression editor has not been enabled by default.

Working with the command line

This section describes how to load, run, retrieve results, and modifying parameters using the command line.

You can run a project in the following modes:

Retrieving results

By default, all recorded items are returned, as configured from within the Source application (Running scenarios). Alternatively, you can specify specific items to record by using a command line argument:

RiverSystem.CommandLine -m Client -r "Inflow 1/Inflow Volume"

The command after -r refers to the exact name of the recordable item as it appears in Source, ie Node Name/Variable. In this case, the variable, Inflow Volume, of the inflow node will be recorded.

In client/server mode, results are always computed on the server, but returned through the client. By default, results are displayed on the console (in both standalone and client modes), but it is possible to save the results directly to a file using the following command (file name is resultsfilename.csv):

RiverSystem.CommandLine -m Client -o resultsfilename.csv

Modifying parameters

Several global expressions can be set using the -v argument:

• Set the values: 

• RiverSystem.CommandLine -m Client -v "$metaParam=2.5" 

• Set multiple expressions:

RiverSystem.CommandLine -m Client -v "$metaParam=2.5" -v "$anotherMetaParam=3.0".

Examples

The following set of examples indicate the type of commands used to run projects in the two modes.

Inprocess

The next example runs the project from start to finish and puts all recorded values in the file ‘test.csv’.

>RiverSystem.CommandLine.exe -p "C:\ProjectDir\test.rsproj" -o test.csv
Loading 100%
Meta-Parameters:
+ $inflow
+ Straight-Through Routing\Default Link #1\Upstream Flow Volume
+ Straight-Through Routing\Default Link #1\Downstream Flow Volume
+ Straight-Through Routing\Default Link #1\Mass Balance
+ Inflow\Inflow 1\Upstream Flow Volume
+ Inflow\Inflow 1\Downstream Flow Volume
+ Inflow\Inflow 1\Inflow Volume
+ Inflow\Inflow 1\Mass Balance
+ Gauge\Gauge 2\Upstream Flow Volume
+ Gauge\Gauge 2\Mass Balance
+ Global Expressions\$inflow\Value
Running 100%

Server

This command starts a basic server on the same machine as the client:

>RiverSystem.CommandLine.exe --mode server

The service is ready at net.tcp://localhost:8523/eWater/Services/RiverSystemService
Press Enter to stop the service.

In this command, a basic server runs on the same machine as the client. This server will look for project files passed from the client in the directory "C:\ProjectDir":

>RiverSystem.CommandLine.exe --mode server --d "C:\ProjectDir"

The service is ready at net.tcp://localhost:8523/eWater/Services/RiverSystemService
Press Enter to stop the service.

The following command will start up a server, load a project from the directory C:\Users\man25n\Documents\eWater Source Projects using the address specified (net.tcp://192.168.1.5:8080/myWaterService/):

>RiverSystem.CommandLine.exe --mode server -d "C:\Users\man25n\Documents\eWater Source Projects" -a "net.tcp://192.168.1.5:8080/myWaterService/"

Press Enter to stop the service.

The address consists of the communication protocol (net.tcp) and the name of the end-point. For a machine that runs both the client and server, the address of the end-point must match.

Client

The following command assumes that the server is already running from the previous example:

> RiverSystem.CommandLine.exe --mode client --d "C:\ProjectDir"

The service is ready at net.tcp://localhost:8523/eWater/Services/RiverSystemService.

Additional examples of running Source using a DOS batch file, a Python script or an R script can be found here.

Advanced configuration options

In the client/server mode, there are two command line windows and riversystem.commandline.exe is run twice:

• XML file: riversystem.commandline.exe.config - This file contains a section called <system.serviceModel> which can configure hundreds of options for the services and client including transport types, maximum data size, security etc. These are the default options used when running in client or server mode. The location of the server defined in this file, by default, is "localhost" which means the server and client are configured to run on the same machine.
  Option A - A project is loaded when the server starts (first command line) and is run in response to a client call (second command line):

RiverSystem.CommandLine -p C:\Temp\ExampleProject.rsproj -m Server
RiverSystem.CommandLine -m Client

• For testing purposes and ad-hoc configuration, two main command line options are also provided to configure the location/type of the server and message time out. When run in this mode the <system.serviceModel> section of the riversystem.commandline.exe.config file may need to be deleted as creating two servers of the same type is not supported. This means that the net.tcp server on localhost defined in the exe.config file will stop you creating an adhoc server of the same type.
  Option B - In the example below, the server starts without loading any project (first command line). The client then specifies the project, which gets loaded onto the server and runs immediately (second command line):

RiverSystem.CommandLine -m Server
RiverSystem.CommandLine -m Client -p C:\Temp\ExampleProject.rsproj

Option descriptions

Notice in the examples that the command line contains various options, which result in different outputs. The function of these options is provided in Table 1. Note that these are optional extras.

  Table 1. Command Line Runner (options)