Matthew J. Beal - London Underground / Tube Cluster

Spec

Tube is a 34-processor cluster, owned by Dr. Beal and administered by CSE, available to members of his group for algorithm prototyping. Each node has 2GB ram, 80GB hd, and dual core 3.2GHz Intel Xeon processors. underground.cse.buffalo.edu is the head-node, accessible only via ssh. Matlab is available with the Distributed Computing Toolbox.

Current state

This page and its information refreshes every 2 minutes:

Time last updated:  Thu Dec 21 12:12:01 EST 2006

bank          up  19+12:50,     0 users,  load 0.00, 0.00, 0.00
belsizepark   up  19+12:51,     0 users,  load 0.11, 0.04, 0.00
bethnalgreen  up  19+12:51,     0 users,  load 0.00, 0.00, 0.00
camdentown    up  19+12:47,     0 users,  load 0.00, 0.00, 0.00
chalkfarm     up  19+12:50,     0 users,  load 0.00, 0.00, 0.00
charingcross  up  19+12:51,     0 users,  load 0.00, 0.00, 0.00
embankment    up  19+12:50,     0 users,  load 0.00, 0.00, 0.00
euston        up  19+12:51,     0 users,  load 0.00, 0.00, 0.00
highgate      up  19+12:51,     0 users,  load 0.00, 0.00, 0.00
holborn       up  19+12:50,     0 users,  load 0.00, 0.00, 0.00
hollowayroad  up  19+12:50,     0 users,  load 0.00, 0.00, 0.00
kingscross    up  19+12:51,     0 users,  load 0.02, 0.02, 0.00
mileend       up  19+12:50,     0 users,  load 0.00, 0.00, 0.00
russellsquar  up  19+12:50,     0 users,  load 0.00, 0.00, 0.00
underground   up  19+12:50,     0 users,  load 0.00, 0.01, 0.00
victoria    down 102+08:50
woodsideparkdown 102+08:51
                                    TOTAL load 0.13, 0.07, 0.00

Underground users currently: 
Matlab licenses used by    : juanli sm288 juanli sm288

MATLAB_Distrib_Comp_Engine: 28/32
MATLAB: 2/5
Distrib_Computing_Toolbox: 2/5

Software

Matlab:

Matlab: (5 licenses) currently version 7.2.0.294 (R2006a) January 27, 2006. Please launch matlab with the following command
[~]$ /usr/local/matlab/bin/matlab -nodesktop -nosplash
Distributed Computing Toolbox: (5 licenses) From a Matlab session on underground or any of the nodes, functions such as dfeval and dfevalasync can be used to distribute coarse-grained jobs across the cluster. There are licenses for a maximum of 32 workers, i.e. the entire remaining 16 nodes.
Statistics Toolbox: (5 licenses) Contains many useful functions.
Bioinformatics Toolbox: (0 licenses) Contains many not so useful functions.

Distributed Computing Toolbox examples:

To appear soon.

Using unix's screen utility

To appear soon.

Setting up ssh keys to move between nodes fast

Visit http://www.arches.uga.edu/~pkeck/ssh/ for how to manage public keys.
Visit http://www.gentoo.org/proj/en/keychain/ for how to install ssh-agent / keychain.
Including the following line in your .tcshrc may be useful to push public keys around:
alias pushpubkey 'cat ~/.ssh/id_dsa.pub | ssh \!:1 sh -c "cat - >> ~/.ssh/authorized_keys2"'