The resource discovery page

You can browse all resources available on Chameleon using the Resource Discovery page. The page lets you filter by hardware characteristics, check current and future availability, and generate reservation commands.

Filtering resources

The search bar at the top of the page filters across all resource types by keyword — node type name, GPU model, site, architecture, and more. When a search matches resources in a tab other than the one you are viewing, a notice appears below the availability panel with a link to switch to that tab.

Search results for "gpu" showing a cross-tab match notice — Search filtering nodes — with a cross-tab match notice

The left sidebar filters the results. Use the Bare Metal and Virtual Machines tabs to switch between resource types. The Availability filters narrow results to resources free starting at a specific time and for at least a given duration. Additional quick filters cover GPU presence and CPU architecture.

Expand Advanced Filters to filter on more specific hardware attributes including processor model, GPU count and vendor, placement, network, storage, and RDMA. Click Reset all in the sidebar to clear all active filters.

Availability panel

The Availability of Filtered Nodes panel shows current availability across the sites selected in the sidebar. Each site has a color-coded bar where green is available, red is reserved, and yellow is under maintenance, with raw counts on the right.

Node type tags appear under each site. Clicking a tag filters the node list to that type and shows an active-filter pill below the panel. Tags shown in red indicate all nodes of that type are currently reserved.

Availability panel with a node type tag selected — Status Now — node type tag selected

Switch to Reservation Calendar to see upcoming reservations. In Individual nodes mode each node appears as its own row with red bars marking reserved windows. In By node type mode nodes are collapsed to one row per type — overlapping bars show how many nodes of that type are simultaneously reserved, making it easy to spot when capacity opens up.

Reservation calendar aggregated by node type — Reservation calendar — by node type

Individual nodes

The Individual nodes view lists each bare metal node matching your filters, sorted by soonest availability. Each card shows the node name, site, node type, current availability, and key hardware specs. Check the checkbox on a card to add that node to the reservation cart.

By node type

The By node type view shows one card per node type with aggregated availability counts across all nodes of that type. Use this view when you need any available node of a given type rather than a specific one.

Bare Metal — Node Types view — Bare Metal — Node Types

Node details

Click any node card to open its detail panel. The Node Info tab shows the node’s full specifications including its UUID, physical location, CPU, RAM, GPU, and architecture. Some nodes display an Admin note with important information about hardware capabilities or configuration requirements for that node. An inline availability chart lets you toggle between a Gantt view for this specific node and a line graph showing how many nodes of the same type will be free over the coming weeks at that site.

Node type availability chart — Node type availability over time

Note

Each node’s UUID is shown in the Node Info panel. You will need the UUID when reserving a specific node by name or for power monitoring.

Attention

When Chameleon replaces faulty hardware the replacement typically has the same specifications. If hardware-level reproducibility matters for your experiment, take note of any hardware replacement events that may have occurred during your reservation window.

The Reserve Node tab generates a ready-to-use reservation command. Choose Reserve by node type to reserve any available node of this type, or Reserve by node name to reserve this exact node. Select a duration and copy the command for your preferred tool.

Auto-generated OpenStack CLI reservation command — Reserve Node — OpenStack CLI

Auto-generated python-chi reservation snippet — Reserve Node — python-chi

Reserve in Horizon with node type pre-filled — Reserve Node — Horizon

Reserving from the cart

Checking the checkbox on any node or node type card adds it to the reservation cart. When resources are selected a floating bar appears at the bottom of the page — click Reserve selected to proceed to the cart.

The cart page groups your selections by site and generates reservation instructions for each group. Resources from different sites or of different types (bare metal nodes and VM flavors) can be combined in the same cart, and each site gets its own set of tool tabs, duration picker, and generated command.

Cart page showing resources grouped by site — Cart page — resources from two sites

Use Continue browsing to return to the discovery page without losing your cart, or Remove all from cart to clear it. Individual resources can be removed with the × next to each entry.