Current news...

2015: Spring update 2

Quick summary: new silo1 and macomp00, new Matlab queues, new MySQL server, new CVS and git servers

Having reached the start of the summer term, here's an update on Maths research computing news:

  • New silo1 server and new silo mount layout: silo1 has replaced the existing silo server; silo users had already been informed of this individually by email and in addition, those who accessied silo directly rather than through its NFS shares were sent details of their new login accounts on silo1. silo1 is very similar to silo2 with 10.4 TB of storage, nearly three times that of silo.

    At the same time the opportunity was taken to change the layout of both silo1 and silo2's mounts on NFS client systems to a simpler and more logical format:


    More details...

  • Huxley 616 server room: as we've learnt from experience, promises to maintain a reliable power supply for the server room cooling systems have not always been kept and we have had a number of unscheduled cooling power outages over the period this facility has been in operation. Quite a lot has been done behind the scenes to improve internal monitoring & control systems leading up to the scheduled Easter power shutdowns in the Huxley building and the partial cooling failure on Easter Sunday was handled more gracefully than during previous incidents. Work is ongoing to improve room infrastructure management even further.

  • Maths compute cluster: all nodes now run Ubuntu 14.04 LTS Server Linux and macomp00 (formerly a Red Hat dev server) has been re-introduced to keep macomp000 company. Both servers are set up identically for users to test code and run small jobs on. More details...

  • MySQL server: to meet a requirement from a research group for SQL database facilities accessible from the Maths compute cluster, a new general access MySQL server has been set up hosted on macomp00. More details...

  • Two new queues, matlabpar4 and matlabpar6: - have been added to cater for the smaller Matlab jobs using the matlabpool facility using 4 and 6 cores respectively. Since 4 or 6 free CPU cores are more likely to become available on a node at the same time than eight, this means Matlab parallel jobs queued to these new queues will spend far less time in the queue waiting for resources to become available than is the case with the existing matlabpar queue, which requires 8 cores. So if you are a Matlabpool user, you'll find submitting two smaller jobs to matlabpar4 will stand a far greater chance of executing soon after submission than a single job on the matlabpar queue. More details...

  • New git and CVS servers: a git-hub service with web-based access in addition to the traditional access methods has been introduced on the share2 server alongside the existing svn service and a cvs server has also been added.

  • Other news: half of the Stats linux cluster has migrated from Fedora Linux to Ubuntu 14.04 and a group within this section now has a 15 node Hadoop cluster as well as an 8-server iSCSI SAN for working with large data sets.

Older news items:

April 26th, 2015: Spring update
November 11th, 2014: Autumn update
September 17th, 2014: Summer update 2
July 17th, 2014: Summer update
March 15th, 2014: Spring update
November 2nd, 2013: Summer update
May 24th, 2013: Spring update
January 23rd, 2013: Happy New Year!
November 22nd, 2012: No news is good news...
November 17th, 2011: A revamp for the Maths SSH gateways
September 7th, 2011: Failed systems under repair
August 14th, 2011: Introducing calculus, a new NFS home directory server for research users
July 19th, 2011: a new staging server for the compute cluster
July 19th, 2011: A new Matlab queue and improved queue documentation
June 30th, 2011: Updated laptop backup scripts
June 18th, 2011: More storage for the silo...
June 16th, 2011: Yet more storage for the SCAN...
June 10th, 2011: 3 new nodes added to the Maths compute cluster
May 21st, 2011: Announcing SCAN large storage and subversion (SVN) servers
May 26th, 2011: Reporting missing scratch disk on macomp01
May 21st, 2011: Announcing completion of silo upgrades
May 16th, 2011: Announcing upgrades for silo
April 14th, 2011: Goodbye SCAN 3, hello SCAN 4
March 26th, 2011: quickstart guide to using the Torque/Maui cluster job queueing system
March 9th, 2011: automatic laptop backup/sync service, new collaboration systems launched
May 20th, 2010: Scratch disks are now available on all macomp and mablad compute cluster systems
March 11th, 2010: Introduing job queueing on the Fünf Gruppe compute cluster
October 16th, 2008: Introduing the Fünf Gruppe compute cluster
June 18th, 2008: German City compute farm now expanded to 22 machines
February 7th, 2008: new applications on the Linux apps server, unclutter your desktop
November 13th, 2007: aragon and cathedral now general access computers, networked Linux Matlab installation upgraded to R2007a
September 14th, 2007: Problems with sending outgoing mail for UNIX & Linux users
July 23rd, 2007: SCAN available full-time over the summer vacation, closure of Imperial's Usenet news server
May 15th, 2007: Temporary SCAN suspension, closure of the Maths Physics computer room, new research computing facilities
January 14th, 2005: Exchange mail server upgrade, spam filtering with pine and various other enhancements

Andy Thomas

Research Computing Officer,
Department of Mathematics

last updated: 2.05.2015