Hardware Specs

 

The Leavitt cluster is composed of 11 Dell PowerEdge 430’s compute nodes and one Dell PowerEdge 730XD head node.  Each of the compute nodes has 128GB of memory and dual Intel Xeon E5-2680 processors, each with 14 cores running at 2.40GHz, for a total of 308 cores and 1.4 terabytes of memory. The head node has an additional 48 terabytes of disk storage, which is shared amongst the compute nodes. The 12 nodes are also connected by an Intel Omni-Path switch, which provides very high speed (100 gigabits/second) network access between each member in the cluster.

Performance

In order to get a baseline number for the performance of the cluster, our support group had the cluster perform a HPLinpack benchmark test on 10 of the 11 compute nodes.  HPLinpack  performs a dense system of linear equations, and can provide a simple method of quantifying the performance of a compute cluster.  The first test ran for a little over one hour, and indicated that the cluster was cable of performing 5.82202e+03 Gflops, or 5,822 billion floating point operations per second.

Storage

Student users of the Leavitt cluster automatically receive 100GB of storage in their home directory (faculty users receive no quota), available on all cluster nodes. This is your initial working directory when you login to the cluster (/home/USERNAME), and is the main location for short-term data storage for use on the cluster. Storage here is backed up daily, however storage on compute nodes (e.g. in /var/tmp or /tmp folders) is not, so users should be sure to save job output to another directory once their job is completed.

Storage in your home directory is intended for active use on the cluster—this is not an appropriate place to save your project data long-term. For long-term storage, please transfer your files to one of our Bates network drives (Paris or Etna) or your preferred alternative such as Google Drive. The advantage of both Paris and Etna is that they can be easily accessed from Leavitt. See FAQ section for more information.