1. ATLAS Software & Computing
Central Services
ATLAS Software & Computing
(CERN)
01/10/2017
Christopher Jon Lee
on behalf of the
Software and Computing Infrastructure Support Group
University of Cape Town, South Africa

2. 2019 – OS updates so far
CC7 updates -
December 2020 – END OF SUPPORT
New Projects. Please remember CREM needs to approve.
~ 470 machines in total
227 currently CC7
MOST of the big services are almost finished.
Those left are “user” owned machines.
Will NOT be forcing.. But they should remember its their responsibility to migrate, and support will STOP
LXPLUS6 will stop April 2020

3. 2019 – OS updates so far Linux Support
Upstream RHEL8 available since 13/05/2019
CentOS 8 likely to be available around Q3
Status page :
CC7: CERN CentOS 7, supported until 30/04/2024
Current release: 7.6 (no extended support possible)
SLC6: Scientific Linux CERN 6, supported until 30/11/2020
Current release: 6.10 (no extended support planned)
SLC5: Scientific Linux CERN 5, extended support ended 31/03/2019
Repositories to be move to archives before the summer
More information:

4. MAlt Microsoft Alternative project Started 20th November 2017
Microsoft changed their licence policy
Means CERN is no longer considered an Academic Institute
Effective as of March 2019.
Replaced by a new contract based on user numbers.
Increasing the license costs by more than a factor of ten
Full news and updates can be found here

5. AFS status
Need more information, Following up
For now we know this:

6. Wigner Migration
Going well, MUST be completed by August
Current list:
| aianalytics | cern-wigner-a
| aiatlas | cern-wigner-b
| aipanda | cern-wigner-b
| aipanda | cern-wigner-b
| aipanda | cern-wigner-b
| aipanda | cern-wigner-b
| aipanda | cern-wigner-b
| aipanda | cern-wigner-a
| aipanda | cern-wigner-a
| rucio-analytix | cern-wigner-a
| rucio-nagios-prod-01 | cern-wigner-a

7. Build Service Status
Due to CPU steal, IT have given us access to a special area with zero over commit
First 10 nodes have been created (aibuild16-0[03-012])
Current performance tests with the 16 core nodes are promising.
75 nodes in voatlasbuild/build ~1200 cores in total.
To be re-evaulated.
18 active nightly branches.  
Only 6 nightly branches are on CentOS7.
14 SLC6 machines and ~ 11 CentOS7 machines
CI System:
~ 70% of jobs on CentOS7.
16 CentOS7 machines and 6 SLC6 machines
Revised total:
27 CentOS6 nodes and 20 SLC6 nodes.
See Next talk by Alex Undrus for more details

8. Cloud Service Status

9. Cloud Service Status
New Projects. Please remember CREM needs to approve.
ATLAS Services:
July
June
Increase of 333
All ATLAS Projects
December
June
Increase of 929
Valencia 2017

10. Who we are? Members: Coordinator: Chris Lee
Shaojun Sun, Alexey Buzykaev, Sergey Makarychev
Contacts:
If you are a service manager, please make sure you are in atlas-adc-service-managers e-group
Main twiki pages:
ASCIG
Distributed Computing Machines
New DEMO Dynamically created Machines list
guest/guest

11. Questions
CS team is happy to discuss the requirements and to propose improvements for your services
(JIRA project CSOPS or (Image Credit: