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Facilities
- Red/Blue Nodes
- The red and blue nodes are 28 x86 IBM and Dell pc's
running RedHat 7.3. Access to the nodes is controlled
using PBS and MAUI. redleader.umiacs.umd.edu is the frontend
to the cluster and is open to the world. All jobs must
be submitted from redleader.
- Rogue Nodes
- The rogue nodes are 50 standaline x86 linux boxes running
RedHat 7.3 with between 2 and 4 80GB scratch disks. The
rogue nodes are accessable from within UMIACS/CFAR/CS
only. Exceptions can be made to allow access to specific
off-site machines. There is no schedular and no resource
limits in affect on the nodes. General practice is to
send mail to cluster-users@umiacs.umd.edu
if a reservation is needed.
- Tau/Ceti
- Tau/Ceti is a Sunfire 6800 with 24 processors and 72G
of RAM. The machine usually runs as tau.umiacs.umd.edu,
but will occasionally be partitioned into two machines,
the second being ceti. Tau is the more stable half of
the pair, with Ceti being used for kernel and hardware
hacking.
Playclub- Playclub is an IBM P670 with 8 processors and 8G of
RAM. The machine is running AIX-5L.
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- Boo Nodes
- A combination of AMD Athlon and Intel Xeon nodes from
Penguin Computing. They are dual processor machines with
2Gb of RAM. These machines are being used to evaulate
different technologies in preparation for a larger cluster.
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- Deathstar
- Deathstar is an 8-way IBM Netfinity with 4GB of RAM.
There is no resource management present on the machine
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- Gold Nodes
- The Gold nodes are 10 Dec Alphastaions 2100 4/275 running
RedHat 7.2 with 256MB of RAM. This cluster used to be
known as the alpha-farm, but has been brought back to
life running linux after the lpdc DCE cell was disabled.
- IBM SP Complex
- Three IBM SP frames with 10Tb of tape storage and 864Gb
of SSA disk.
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- Network Topology
- Current networks in the LPDC are all LPDC based with
everything from 10m on the gold nodes to gigabit over
fiber on the red and blue nodes. All machines have a 10/100
management network connecting them (121 network). In addition,
the rogue nodes have channel bonded ethernet linking them.
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