Revision 31 as of 2014-01-13 21:12:08

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Linux support in Zeuthen is based on Scientific Linux, an effort kindly made available by FNAL with contributions from other labs.

SL is in use at virtually all HEP sites and many other labs, universities, and enterprises.

Information for Linux Users

SL6_User_Information

SL5_User_Information

SL4_User_Information

SL3 User Information

Using the Infiniband compute cluster

Using the batch farm

Status of SL Releases

Scientific Linux 7

SL7 is expected to become available in Q3/2014 and be supported for about ten years.

Scientific Linux 6

SL6 has been our workhorse since Summer 2012. Migration of farms and WGS started in autumn 2011. The better part of the farm's computing power is provided by SL6 - this includes the majority of cores, all the fastest cores and all GPGPU systems.

SL6 should work on newly released hardware until early 2016. General support ends November 2020.

Scientific Linux 5

SL5 was our workhorse from Summer 2007 to early 2012, and is now gradually being replaced by SL6.

New hardware worked with SL5 until mid 2012. Support for SL5 on Sandy Bridge and later hardware generations is not foreseen, which affects some hardware purchased in 2012 and all systems purchased later. Supporting existing systems will be possible until April 2017 - but features are generally frozen, and some - like advanced display driver support for desktop hardware - will have to be removed soon. There are no more user accessible 32-bit systems.

Scientific Linux 4

SL4 was largely skipped, although a number of systems were used for providing services, as ATLAS WGS, and in the NAF. As of March 1st, 2012, SL4 is completely unsupported and all remaining systems were shut down.

Scientific Linux 3

SL3 was our workhorse from early 2005 to Summer 2007. It no longer works on any current hardware and is now completely unsupported. There are no more SL3 systems in Zeuthen.

Full upstream support ended November 2007. On December 1st, it transisitioned to "Legacy support". See this copy of the announcement.

Within these limitations, existing SL3 systems were supported until October 2010, the end of life date of RHEL3. A few systems with very special purpose (PITZ DAQ / radiation monitoring, APE reference host) were even run until late 2012, with dwindling support but still placing significant demands on our human resources.

Local Repositories and Mirrors

We mirror the current SL5 and SL6 releases: Local_Linux_Repositories

Network installations (http) are also possible from these repositories, using the small boot.iso CD images found in the images/ subdirectory of the distribution.

Full iso images are usually available in /project/linux/iso.

Historic DESY Linux Releases

DESY Linux 5

DESY Linux 4

Scientific Linux support by - IT - in Hamburg

See http://scientificlinux.desy.de/