Distributed Execution Network Lab (DEN)


Classes that use the Distributed Execution Network lab:


  • Servers: (firewall, administration)

    • P4 2.4Ghz CPU, 1 GB RAM, 80 GB SCSI, dual NICs
    • GPC PC w/ P4 1.5Ghz CPU, 256 MB RAM, 80 GB SCSI
    • Dual PIII 650 Mhz CPUs, 256 MB RAM, 180 GB SCSI and 25 GB SCSI
    • Penguin w/ quad PIII Xeon 700Mhz CPUs, 2 GB RAM, 20 GB SCSI, dual NICs
  • Cluster: (compute engine)

    • (4) Penguin w/ dual PIII 866Mhz CPUs, 256 MB RAM, 30 GB SCSI
    • (8) Dual PIII 650Mhz CPUs, 512 MB RAM, 30 GB SCSI.
  • 3D CAVE machine: (virtual reality platform)

    • Dual AMD Opteron 246, 1GB RAM, NVidia Quadro GPU.
    • Two Panasonic DLP PT-D3500U projector
  • Grunwulf: (energy-efficient portable cluster)

    • (6) Intel Atom CPU (1.2GHz), 1GB RAM, 10/100 NICs.
    • Head node has an additional gigabit NIC.
    • All nodes connected to gigabit-capable switch and 8-port belkin omni-view KVM and share an 80 GB hard drive.
  • Seawolf

    • AMD Athlon 64 X2 4400+ (2.3 GHz), 2GB RAM, 250GB Hard drive
    • (2) GeForce 8800GTS GPUs w/128 stream processors
    • Zalman Reserator XT water cooling kit
    • 1250W modular power supply.
  • Network:

    • Cisco 24-port 1 Gb/sec between switches; 100 Mb/sec to servers
    • Seawolf and Grunwulf share a Linksys BEFSR41 router.
  • Miscellaneous and spare equipment:

    • Belkin 16-port KVM
    • Belkin 8-port KVM
  • Numerous PCs used for server replacement and ad hoc clusters

    • (2) P4 (3.0GHz) w/ 512MB RAM
    • (2) Dual Xeon (3.0GHz) w/ 512 MB RAM
    • P4 (2.8GHz) w/ 512MB RAM
    • P4 (2.4GHz) w/ 512MB RAM
    • (2) AMD Athlon 3000+ w/ 512MB RAM
  • Various Parts:

    • Motherboards
    • RAM
    • Disk drives
    • Floppy drives
    • ZIP drives
    • CD drives
    • DVD drives
    • NICs
    • sound cards
    • video cards
  • Ethernet and KVM switches
  • High-end graphical system designed to use shader languages for SIMD-based parallel processing.
  • (2) Xilinx Vertex-II FPGA (field-programmable gate array) systems for experimentation with reconfigurable computing.


All of the software developed, and most software used, in the DEN is free and open source. Some commercial software is used for specific projects. Installations include:
Operating System: several flavors of Linux, a Solaris system, and a machine running Windows XP.

Scheduler: Torque and Maui batch scheduling systems.

Cluster Management: ROCKS and Windows Compute Cluster.


  • Linux LAMP suite
  • Microsoft Visual Studio development tools
  • Portland Group OpenMP compiler
  • OpenMPI compiler
  • Intel compiler

Productivity: OpenOffice, Microsoft Office, Microsoft Visio.

Monitoring: ganglia, Intel Vtune.

Bioinformatics Applications: Bioperl, Bio roll, PC-based

Graphics: Ogre, 3ds Discreet Max, CUDA