eos: an IBM iDataplex Cluster
|Operating System:||Linux (RedHat Enterprise Linux and CentOS)|
|Number of Nodes:||372(324 8-way Nehalem- and 48 12-way Westmere-based)|
|Number of Nodes with Fermi GPUs:||4(2 w 2 M2050 each and 2 w 1 M2070 each)|
|Number of Processing Cores:||3168(firstname.lastname@example.orgGHz)|
|Interconnect Type:||4x QDR Infiniband (Voltaire Grid Director GD4700 switch)|
|Total Memory:||9,056 GB|
|Peak Performance:||35.5 TFlops|
|Total Disk:||~500 TB by a DDN S2A9900 RAID Array|
|Production Date:||May 2010|
Eos is an IBM "iDataPlex" commodity cluster with nodes based on Intel's 64-bit Nehalem & Westmere processor. The cluster is composed of 6 head nodes, 4 storage nodes, and 362 compute nodes. The storage and compute nodes have 24 GB of DDR3 1333 MHz memory while the head nodes have 48 GB of DDR3 1066 MHz memory. A Voltaire Grid Director 4700 QDR IB switch provides the core switching infrastructure.
lonestar: a Dell Linux Cluster
Located at TACC
|System Name:||Lonestar 4|
|Number of Nodes:||1,888|
|Number of Processing Cores:||22,656|
|Interconnect Type:||Quad Data Rate (QDR) InfiniBand|
|Total Memory:||44 TB|
|Peak Performance:||302 TFlops|
|Total Disk:||276 TB (local), 1000 TB (global)|
|Batch Facility:||Load Leveler|
The TACC Dell Linux Cluster contains 22,656 cores within 1,888 Dell PowerEdge M610 compute blades (nodes), 16 PowerEdge R610 compute-I/O server-nodes, and 2 PowerEdge M610 (3.3GHz) login nodes. Each compute node has 24GB of memory, and the login/development nodes have 16GB. The system storage includes a 1000TB parallel (SCRATCH) Lustre file system, and 276TB of local compute-node disk space (146GB/node). A QDR InfiniBand switch fabric interconnects the nodes (I/O and compute) through a fat-tree topology, with a point-to-point bandwidth of 40GB/sec (unidirectional speed).
Compute nodes have two processors, each a Xeon 5680 series 3.33GHz hex-core processor with a 12MB unified L3 cache. Peak performance for the 12 cores is 160 GFLOPS. The new Westmere microprocessor (basically similar to the Nehalem processor family, but using 32nm technology) has the following features: hex-core, shared L3 cache per socket, Integrated Memory Controller, larger L1 caches, Macro Ops Fusion, double-speed integer units, Advanced Smart Cache, and new SSE4.2 instructions. The memory system has 3 channels and uses 1333 MHz DIMMS.