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Computational resources available to Boston University research community include LinGA systems – Linux Clusters for Genetic Analysis. They consist of three High Performance Computing Linux clusters; high memory compute nodes; one distributed storage cluster using HP IBRIX segmented files system; and a collection of special purpose servers. In total LinGA systems have more than 250 servers with over 1750 CPU cores, 8 TB of RAM and more than 3/4 PB of raw storage capacity.
The first compute cluster, made of AMD processors has 32 server nodes with two single-core 64-bit Opteron CPUs & 2 GB of RAM each and 56 server blades with two dual-core Opteron processors & 12 GB of RAM each. All nodes communicate via two GigE network connections. Blade chassis are connected via 10 GigE uplinks.
The other compute cluster is made of Intel based processors. It contains 73 servers with two single-core 64-bit Xeon CPUs & 2 GB of RAM each and 27 blade servers with two quad-core 64-bit Xeon CPUs each. 12 of the blade servers have 32 GB of RAM each whereas the other 15 have 16 GB of RAM. All nodes in the Intel based cluster are connected via GigE Ethernet switches.
17 servers with amounts of RAM ranging from 64 GB to 144 GB each can be attached to either compute cluster.
Data Intensive compute cluster made of 16 blade servers each with 4 x 16-core AMD Opteron 6276 CPUs & 256 GB of RAM. All nodes communicate via 3 independent networks: GigE for cluster management, 10GigE with storage systems, and QDR InfiniBand for low latency communications.
IBRIX Scale-Out NAS system consists of 14 servers with large amounts of cache and 7 dual controller storage arrays. They provide a total of 432 TB high performance raw storage capacity spread over two separate locations. Its remote replication capabilities offer a higher level of redundancy for important data.
Special purpose servers include; a web/monitoring server, a database server with 3.6 TB of raw storage capacity, a backup/proxy server acting as controlled interface between internal (private) network and external BU networks, an archive storage server with 48 TB of raw storage capacity of compressed data. A number of older servers are used for testing and staging new software tools. All special purpose nodes/servers are directly accessible from all clusters.