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== Concepts
This is a brief overview of the main concepts and terms needed to follow [wiki:CosmosOverview/Workflow]

=== Resources
Everything that Experimenters can interact with is referred to as a [wiki:Resources Resource]

To run an experiment, you will configure the resources that you need.

This includes:
* Compute machines
  * capable of having disk images loaded and saved
  * users can log into them with ssh after provisioning
* Software Defined Radios
  * FPGA images loaded with UHD
  * Radio paramaters controlled with UHD or other API
* RF Frontends
  * api to control switches, filters, and gain
* Network switches
  * connectivity defined with API
* Optical Devices
  * space switch, roadms, and other devices controlled with optical config service
  

Note, some resources will fall into more than one of the above categories, such as a compute machine with integrated SDR, like the [wiki:Hardware/sdr/usrp2974 USRP 2974]

=== Domains
Resources are grouped under Domains. Each domain won't interfere with any others, and they are reserved completely separately.

The hardware in a domain may span several sites.

=== Sites
Physically separate locations where hardware is installed. This may refer
=== Nodes
=== Reservations
=== Images
Images refer to a full disk image, that can be loaded onto, or saved from the testbed machines.

For instructions on how to work with images, refer to [wiki:UserGuide/OmfQuickStart]

For details on the available images, Refer to [wiki:UserGuide/ImageVersions]
=== Tutorials