> For the complete documentation index, see [llms.txt](https://virtualfactory.gitbook.io/vlft/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://virtualfactory.gitbook.io/vlft/tools/jsimio.md).

# jsimIO

**jsimIO** is a platform-independent Python library, compatible with **Python > 3.x**, which can be used to generate [JSIM ](/vlft/tools/jsimio/overview/jsim.md)simulation models of a manufacturing system and run the simulation from a Python environment using the [Java Modelling Tools](/vlft/tools/jsimio/overview.md) (JMT) simulation engine.

GitHub repository: <https://github.com/frabera/jsimIO>

## Features

jsimIO is able to generate simulation models for manufacturing systems with the following characterstics:

* **Multiple part-types**
* **Open** and **closed part-type classes**
* **Assembly operations** (sub-assembly part types can be joined to a assembled part type)
* **Multiple drop** and scheduling strategies
* **Multiple statistical distribution** for modelling service times and arrival times.

{% hint style="info" %}
For a detailed description, refer to the [jsimIO Manual](https://github.com/frabera/jsimIO/blob/master/MANUAL.md) in the dedicated GitHub repository.
{% endhint %}

The available nodes to model the system are:

* **Source**
* **Sink**
* **Station** composed by:
  * **Queue** of finite or infinite size
  * **Server** with single or finite number of concurrent jobs
* **Infinite Server** (Delay)
* **Fork**
* **Join**
* **Logger**

### **Measures**

Many different measures can be selected as simulations result, such as the throughput or the average number of customers, both referred to a single node or to the whole system. *For further information please refer to the JMT manual.*

### Simulation Log

Using the Logger station, it is possible to save a log of each event relate to part flowing by the station.

jsimIO can automatically add a preceding Logger station to each node of the system. In this way, at the end of the simulation a log file is saved as a *.csv* file containing all the events and part flows in the system for further analysis.

## Installation and Requirements

For installation instructions and requirements, visit the dedicated page:

{% content-ref url="/pages/-M4BhfztUm26WjhdmR4D" %}
[How to start](/vlft/tools/jsimio/how-to-start.md)
{% endcontent-ref %}


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