Robert Nicholas (, Earth and Environmental Systems Institute, Penn State University

updated 26 August 2016

Current Usage

Our current work consists of a mix of data processing, statistical/empirical downscaling, simple earth system modeling, climate modeling with fully-couple ocean-atmosphere GCMs, statistical analysis (MCMC, distributing fitting, etc.), emulation, and a limited amount multi-objective optimization. SCRiM cyberinfrastructure resources are split across two facilities, Penn State’s Institute for Cyberscience Advanced CyberInfrasture (ICS-ACI) research computing center and the Penn State Department of Meteorology (managed by Chuck Pavloski). This document focuses on the Meteorology-hosted resources; ICS-ACI resources are described in a separate document.


  • woju (, a Silicon Mechanics iServ R420 system with four 8-core 2.2 GHz Xeon E5-4620 processors and 256 GB RAM; primarily for data processing and general interactive use
  • napa (, a six-node, 96-core cluster; each node is a Silicon Mechanics iServ R331.v4 system with two 8-core 3.3 GHz Xeon E5-2667v2 processors and 256 GB RAM; targeted at small-scale parallel computing tasks
  • mizuna (, a Dell PowerEdge R710 system with two 6-core 2.4 GHz Xeon E5645 processors and 120 GB RAM; supports various web services and also provides compute capacity for non-SCRiM projects

Storage and Backup

  • /mizuna/s0, a 146 TB RAID60 filesystem (via Silicon Mechanics Storform D59J.v2 with 44 4-TB drives; attached to mizuna)
  • /woju/s0, a 219 TB RAID60 filesystem (via Silicon Mechanics Storform D59J.v2 with 44 6-TB drives; attached to woju)
  • /mizuna/s1, a 262 TB RAID60 filesystem (via Silicon Mechanics Storform D59J.v3 with 44 8-TB drives; attached to mizuna); this storage is targeted for synergistic projects external to SCRiM, including PIAMDDI and Dairy CAP.
  • total available storage in excess of 630 TB
  • full backup of all filesystems is handle by Penn State EMS Computing via TSM on a Dell PV3660i

Networking and Remote Access

  • woju, napa, and mizuna are all connected to one another via InfiniBand
  • woju, napa, and mizuna all have direct connections to the PSU high-speed research network
  • use SSH for command-line (shell) access to these systems (e.g. ssh
  • woju and mizuna are directly accessible from any internet-connected host; to access napa, you must be inside the Penn State EMS firewall (logging into woju or mizuna first takes care of this)
  • VNC remote desktop access is available for woju only; connect to using your usual PSU credentials; we recommend using the RealVNC desktop client or Chrome extension; note that you must be inside the Penn State network to access this service

Web Resources

  • an RStudio Server Pro instance, running on mizuna (; used heavily by our graduate students and postdocs, who take advantage of the opportunity to prototype and develop R code with direct access all of our filesystems
  • a protected download server, running on mizuna
  • this website (


SCRiM cyberinfrastructure resources are available to all SCRiM-supported researchers and to collaborators on synergistic, SCRiM-related work as resources allow. Contact SCRiM Managing Director Robert Nicholas ( for more information and details on how to obtain an account.