The Infrastructure Group (TIG) provides service-oriented computing, communications and operations assistance to support the world-class research underway at CSAIL. On the technical side, TIG handles everything from maintaining and monitoring a complex computing infrastructure 24 hours a day, 7 days a week to ensuring lab members can access cutting-edge computing services. TIG maintains the labís four on-premises data centers as well as hosting in off-premises facilities, handles space accommodations and event logistics. Additionally, TIG actively promotes CSAIL research to the broader MIT community, reputable news organizations and the general public via a full-range of media relations and communications services.

Our on-premise OpenStack private cloud consists of 99 physical nodes, with 1440 physical cores (presenting as 2880 due to hyperthreading) and 12T RAM. Data storage is provided in many forms: the AFS and NFS network file systems, as well as the Ceph object and block storage system. Together, these services comprise over 1PB of local data, much of which is backed up using enterprise backup hardware and software, and rotated through off-site storage facilities for disaster recovery.

The CSAIL network connects all locations in the research areas of the Stata Center with gigabit Ethernet at a density of one port per 25 square feet of office space, for a grand total of about 4,000 gigabit network ports. The network backbone is 10-gigabit Ethernet with two redundant backbone switches; the link between the core switches is 30 Gbit/s. (Upgrades to the network core are in planning for winter 2017/18.) CSAIL has aggregate outside connectivity of 10 Gbit/s, as well as a 10 Gbit/s private WAN connection to the Massachusetts Green High Performance Computing Center in Holyoke, and a 40-Gbit/s backbone within the Holyoke data center.

CSAIL operates its own wireless network, which currently consists of 86 Cisco Meraki MR-series access points. Each access point has three radios (one for each band and a third for passive scanning), and supports data rates of up to 600 Mbit/s with appropriate clients. Both authenticated/encrypted (WPA2 Enterprise) and open wireless clients are supported by the same infrastructure throughout all CSAIL-occupied areas of the Stata Center.

CSAIL also maintains a printing, copying, and scanning infrastructure with high-speed color copier/printers, a large-format plotter for poster printing, and support for print job spooling, client configuration issues, printer jams, toner, paper, or other physical issues with printers.

-- MarkPearrow - 20 Sep 2017
Topic revision: 20 Sep 2017, GarrettWollman

MIT Computer Science and Artificial Intelligence Laboratory


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