Go to: Main Content
Minnesota Supercomputer Institute
- Home
- >
- Core Hardware
- >
- Calhoun
- >
- Hardware
Calhoun (SGI Altix XE 1300 Linux Cluster) Hardware Information
Calhoun has 512 Intel Xeon 5355 "Clovertown"-class multi-chip modules (MCMs). Each MCM (illustrated to the left) is composed of two dies. These
dies are two seperate peices of silicon connected to each other and arranged on a single module. Each die has two processor cores that share a 4 MB L2 cache. Each MCM communicates with the main memory in the system via a 1,333 MHz front-side bus (FSB).
Hardware and Configuration
- 256 compute nodes
- 2 interactive nodes
- 5 server nodes
- 2,048 total cores
- 4 TB total main memory
- Suitable for: MPI jobs
Each node:
- Processors: Two quad-core 2.66 GHz Intel Xeon "Clovertown"-class processors
- Memory: 16 GB main memory running at 1,333 MHz.
Network
All of the systems within Calhoun are interconnected with a 20-gigabit non-blocking InfiniBand fabric used for interprocess communication (IPC). The InfiniBand fabric is a high-bandwidth, low-latency network, the intent of which is to accomodate high-speed communication for large MPI jobs. The nodes are also interconnected with two 1-gigabit ethernet networks for administration and file access, respectively.
Home Directories
Currently, 800 GB of file space has been allocated for user home directories. The default quota for home directories is 5 GB.
Scratch Spaces
Currently, there is 2 TB of file space allocated for scratch files in the /scratch1 filesystem. The default quota for scratch space is 50 GB.