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FABRIC Testbed Release 1.0

Release Date 07/23/2021

Major Changes

This is the first major release of FABRIC software stack. It includes basic functionality for all components. Major user-facing features include:

  • Ability to login to the portal, create and join projects, obtain and download credentials, inspect resource availability
  • Ability to provision basic compute nodes (VMs) and attach available PCI devices. This capability is supported jointly by the Control Framework, system services and command-line tools. Supports the following PCI device types:
    • Network cards (ConnectX-5, ConnectX-6 dedicated and shared/SR-IOV)
    • NVMe drives
    • GPUs
  • Ability to provision basic network services – Layer 2 Bridge (L2Bridge), Layer 2 Port-to-Port (L2PTP) and Layer 2 Site-to-Site (L2STS) to interconnect compute nodes.
  • Ability to user JupyterHub using federated identity. Ability to run Python tools library from pre-configured notebooks.
  • Ability to use the knowledge base (learn.fabric-testbed.net) using federated identity – provides structured documentation and discussion forums

Packages and Components

Control Framework

Control Framework Core Inter-actor messaging via Kafka, actor policies and state machines, integration with FIM.
Orchestrator Embedding support for compute and network services and attachment of PCI device components
Broker Resource accounting, resource advertisements using a combined model of site and network advertisements.
Site Aggregate Manager Support for provisioning virtual machines of multiple flavors through OpenStack and attachment/detachment of indicated PCI devices via Ansible.
Network Aggregate Manager Support for provisioning initial set of L2 services (L2Bridge, L2PTP, L2STS).

FIM (FABRIC Information Model)

Basic resource descriptions Provides the ability to create, save, serialize and deserialize FIM resource descriptions (slices, aggregates) using a combination of Neo4j and NetworkX. Supports basic compute (VM), components (NVMe, GPUs, Network cards).


Federated Identity Ability by users to log in using institutional credentials after registering with COmanage
Storage Use attached 10TB storage for user notebook data

Portal and System Services

Portal Federated login with COmanage support, display resource availability map with real-time information on compute resources, create/populate/delete projects, obtain CF credentials
Project Registry Manage project data in conjunction with COmanage.
User Information Service Manage user data in conjunction with COmanage
Credential Manager Issue CF credentials to users using federated identity


We expect all/most of the following feature limitations to be addressed in upcoming releases (expected release date indicated):

Feature limitation Expected in release
  • Some L2 services (L2STS) have limitations when using a combination of shared and dedicated cards in the same site. Depending on the selected options certain connections may not work properly
  • Fall 2021
    No advance reservation support Spring 2022
    No ability to modify slices after creation Spring 2022
    No ability to list available compute images Spring 2022
    No ability to define/save an image Fall 2021
    No ability to configure compute sliver behavior (post-boot scripts, interface configuration etc) Fall 2021
    No ability to attach rotating storage volumes to VMs Fall 2021
    No support for FPGAs TBD


    The following known bugs are present in the currently deployed versions of software:

    Updated on November 12, 2021

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