Chemistry Lab University of Washington Computer Science & Engineering
 Research UNIX Cycle Servers
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Cycle Servers

Members of the CSE research community needing general UNIX cycles can use any of the research Linux cycle servers. These machines have the same software installed as found on the gws desktop Linux machines, but do not sit on anyone's personal desk. The software installation is based on a version of Fedora Linux, with local customizations and additions.

Hosts The current cycle server machines are 
	Host      Model
	recycle   Dell PowerEdge 2650
	bicycle   Dell PowerEdge SC1425
	tricycle  Dell PowerEdge SC1425
Accounts The gws Linux machines, and hence these cycle servers, share a password file which is centrally maintained and distributed. Accounts are given by default to all "research" accounts. If an account is needed request "linux" on the account application. Normal account application rules apply.
Password The gws Linux machines use the CSE Kerberos database for password authentication.
Scratch Space Like other gws Linux machines all the Linux cycle servers have a /scratch partition, available for general use. This space is NOT BACKED UP, nor is its use monitored or arbitrated. As the name implies, /scratch is not a place for important files. Various problems or system updates could result in the machine being wiped and re-installed with a new empty /scratch partition, so one would be wise not to leave anything important in this area. /scratch on the cycle servers gets cleared during an OS upgrade. Likewise, user crontabs are not retained across an OS upgrade.

Last updated: 15-Aug-2011

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