| Sequoia was acquired in summer 2008, and brought online for MCSR users as a 22-node, 176-core cluster in November 2008. In June 2009, 8 more nodes were added, bringing the system up to 30 nodes and 240 cores.
Sequoia Cluster Diagram.
Sequoia Configuration
SGI Altix XE 250 Head Node: The head node consists of dual Intel Xeon Quad-core E5420 processors with 16 MB of memory on the node. It also has 1333 MHz Front Side Bus, 12 MB L2 Cache and 250 GB Disk Drive.
Altix XE 310 & Altix XE 320 Compute Nodes: Sequoia is a 30 node cluster with 22 Altix XE 310 and 8 Altix XE 320 computing nodes. Each node consists of Dual Intel Xeon Quad-core E5420 “Harpertown” processors, a 1333 MHz Front Side Bus, a 12 MB L2 Cache, and a 250 GB Disk Drive. Each processor consists of 4 2.5 GHz cores (or, effectively, CPUs) and 8 GB memory. Overall, Sequoia has 480 GB memory (16 GB per node, 8 GB per processor, 2 GB per core). In addition to the 250 GB Hard Drive available at each node, Sequoia has 14 TB of centralized scratch space (/tmp), 6.4 TB of permanent, recoverable user work space (/ptmp), and 92 GB of centralized applications space (/usr/local/apps).
SGI Linux Compilers and Applications
Compilers: Intel compilers for Linux (C/C++, Fortran) and GNU Compiler Collection (C/C++)
Libraries: SGI Message Passing Toolkit (MPT), Intel® Math Kernel Library (MKL) and FFTW
Applications: Gaussian 03, MolPro, CMPD and Amber 10.
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