The Leavitt cluster is composed of 16 Dell PowerEdge 430 compute nodes, 1 Dell PowerEdge C6320p GPU-enhanced compute node, and one Dell PowerEdge 730XD head node. Each of the 430 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 448 cores and 2 terabytes of memory.
The C6320p GPU-enhanced node has 128GB of memory and dual Intel Phi 7210 processors, each with 64 cores running at 1.30GHz for a total of 128 cores.
The head node has an additional 48 terabytes of disk storage, which is shared amongst the compute nodes. The compute 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.
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 16 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.
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.