UKI-LT2-RHUL
Contents
UKI-LT2-RHUL
Topic: HEPSPEC06
CPU+cores,Bits | OS | Kernel | 32/64 | mem | gcc | Total | Per Core | Note |
Dual CPU,Intel(R) Xeon 3.06 GHz | RHEL3 update 9 | 2.4.21-57.ELsmp | 32 | 1 GB | 3.2.3 | 8.34 | 4.17 | ce1.pp.rhul.ac.uk |
Dual CPU, Quad core, Intel Xeon E5345 2.33 GHz (Clovertown) | SL4.3 | 2.6.26.5 ELsmp | 64 | 16 GB | 3.4.6 | 58.26 | 7.3 | ce2.ppgrid1.rhul.ac.uk |
Dual CPU, Quad core, Intel Xeon E5345 2.33 GHz (Clovertown) | SL5.5 | 2.6.18-164.11.1.el5 | 64 | 16 GB | 4.1.2 | 62.89 | 7.9 | ce2.ppgrid1.rhul.ac.uk |
Intel Xeon X5660 @ 2.80GHz, 2 cpu x 6 cores, Dell C6100 | SL5.5 | 2.6.18-238.5.1.el5 | 64 | 24 GB | 4.1.2 | 158 | 13.3 | cream2.ppgrid1.rhul.ac.uk |
Intel Xeon X5660 @ 2.80GHz, 2 cpu x 6 cores x 2 (HT), Dell C6100 | SL5.5 | 2.6.18-274.12.1.el5 | 64 | 48 GB | 4.1.2 | 202 | 8.43 | cream2.ppgrid1.rhul.ac.uk |
--Simon george 09:39, 16 Dec 2011 (GMT)
CPU+cores,Bits | OS | Kernel | 32/64 | mem | gcc | Total | Per Core | Note |
Dual CPU, Quad Core, Intel Xeon X5560 2.80 GHz (Nehalem) HT enabled | SLC5.3 | 2.6.18-128.2.1.el5 | 64 | 24 GB | 4.1.2 | 135.42 | 16.92 | 8 processes (1 per core) |
Dual CPU, Quad Core, Intel Xeon X5560 2.80 GHz (Nehalem) HT enabled | SLC5.3 | 2.6.18-128.2.1.el5 | 64 | 24 GB | 4.1.2 | 307.94 | 19.24 | 16 processes (1 per hyperthread) |
Dual CPU, Quad Core, Intel Xeon X5560 2.80 GHz (Nehalem) HT disabled | SLC5.3 | 2.6.18-128.2.1.el5 | 64 | 24 GB | 4.1.2 | 138.82 | 17.35 | 8 processes (1 per hyperthread) |
Dual CPU,Intel Xeon 3.06 GHz no HT | SLC 4.8 | 2.6.9-89.0.3.EL.cernsmp | 32 | 1 GB | 3.4.6 | 10.46 | 5.23 | 2 processes, 1 per CPU |
AMD Phenom II X4 955 3.2 GHz | SLC5.3 | 2.6.18-128.4.1.el5 | 64 | 4 GB | 4.1.2 | 53.0 | 13.25 | 4 processes (4 cores on single CPU) |
AMD Athlon64 3000+ | SLC 4.8 | 2.6.9-89.0.9.EL.cern | 64 | 2 GB | 3.4.6 | 7.80 | 7.80 | 1 single core CPU so 1 process |
Topic: Middleware_transition
lcg-CE:- have to plan for this by finding a suitable hardware.
gLite3.2/EMI
ARGUS - 3.2.4-2
BDII_site - 3.2.11-1
CE (CREAM/LCG)3.2.10
glexec 3.2.6-3
SE 1.8.1
UI
WN 3.2.11
Comments
Topic: Protected_Site_networking
- Separate subnet - 134.219.225.0/24
- Plan to setup dedicated monitoring like cacti etc.
- Dedicated 1Gb/s link to Janet at IC - Until April shared the link with college, which was capped at =~ 300 Mb/s
- Network Hardware upgrade - 8x Dell PowerEdge 6248, double-stacked (2x48Gb/s + redundant loop) - SN: 4x1Gb/s bonded & vlan, WN: 2x1Gb/s bonded (only on private network)
Topic: Resiliency_and_Disaster_Planning
- This section intentionally left blank
Topic: SL4_Survey_August_2011
lcg-CE:- have to plan for this by finding a suitable hardware.
Topic: Site_information
Memory
1. Real physical memory per job slot:
ce1: 0.5 GB
ce2: 2 GB
2. Real memory limit beyond which a job is killed:
ce1: none
ce2: none
3. Virtual memory limit beyond which a job is killed:
ce1: none
ce2: none
4. Number of cores per WN:
ce1: 2
ce2: 8
Comments:
ce1 o/s is RHEL3 so most VOs can't use it.
ce2 o/s is SL4.
Network
1. WAN problems experienced in the last year:
Firewall problems related to ce2/se2, now resolved.
2. Problems/issues seen with site networking:
LAN switch stack came up wrongly configured after a scheduled power cut at end of Nov. It was very difficult to debug remotely and was not resolved until early January.
3. Forward look:
See below.
Comments:
The ce2/se2 cluster is due to be relocated from IC to new RHUL machine room around mid-2009.
Power and cooling should be good. More work is required to minimise the impact on the network performance.
Currently at IC the cluster has a short, uncontended 1Gb/s connection direct to a PoP on LMN which has given very reliable performance for data transfers.
Current network situation at RHUL is a 1Gb/s link shared with all other campus internet traffic.
The point has been made that this move must not be a backward step in terms of networking, so RHUL CC are investigating options to address this.
Topic: Site_status_and_plans
SRM
Current status: DPM 1.8.3 in production since 15Dec11
Argus/glexec
Current status: Installed Argus/Glexec on all worker node and passing tests 26May11
Comments:
CREAM CE
Current status: cream2 in production