[[Include(/WikiToC)]] == 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 * 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, or may be contained within a single site. === Sites * Physical locations where hardware is installed. * A site consists of one or more nodes. === Nodes * Nodes refer to a set of radio, compute, and other resources meant to be used as a unit. * The resources in a node will share infrastructure such as power, networking, or RF frontends. * Therefore, the use of resources within a node must be coordinated to avoid interference. * It is possible to use a subset of the resources within a node === 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