Current System Load - Full System

The plot below shows the status of nodes on the current ARCHER2 Full System service. A description of each of the status types is provided below the plot.

image

Note: the long running reservation visible in the plot corresponds to the short QoS which is used to support small, short jobs with fast turnaround time.

Service Alerts

The ARCHER2 documentation also covers some Known Issues which users may encounter when using the system.

Status Type Start End Scope User Impact Reason
Information Service change 2022-12-12 09:45 N/A Compute nodes Users may see changes in application performance The default CPU frequency for parallel jobs started using `srun` has been changed to 2.0 GHz to improve the energy efficiency of ARCHER2. We recommend that users test the energy efficiency of their applications and set the CPU frequency appropriately.

Previous Service Alerts

This section lists resolved service alerts from the past 30 days. A full list of historical resolved service alerts is available.

Status Type Start End Scope User Impact Reason
Resolved Service alert 2023-01-23 11:30 2023-01-23 15:15 /work file system (fs3), possible intermittent issues on login/compute nodes Projects with directories on the fs3 /work file system will not be allowed to run jobs (as the resources may just be wasted) and may see that some data is inaccessible. Users may seem occaissional issues on login/compute nodes as they try to access the failed OSS. You can check which file system your work directory is on by navigating to the location and using the command readlink -f . Issue is now resolved following a Lustre OSS failure in the fs3 /work file system

Maintenance Sessions

This section lists recent and upcoming maintenance sessions. A full list of past maintenance sessions is available.

Status Type Start End Scope User Impact Reason
Planned Full 2023-04-14 12:00 ARCHER2 ARCHER2 unavailable to users Major software upgrade of ARCHER2. Service return expected w/b 8 May 2023. Full details in the ARCHER2 documentation

System Status mailings

If you would like to receive email notifications about system issues and outages, please subscribe to the System Status Notifications mailing list via SAFE

FAQ

Usage statistics

This section contains data on ARCHER2 usage for Dec 2022. Access to historical usage data is available at the end of the section.

Usage by job size and length

Heatmap of usage job size versus job length

Queue length data

The colour indicates scheduling coefficient which is computed as [run time] divided by [run time + queue time]. A scheduling coefficient of 1 indicates that there was zero time queuing, a scheduling coefficient of 0.5 means that the job spent as long queuing as it did running.

Heatmap of scheduling coefficient job size versus job length

Software usage data

Plot and table of % use and job step size statistics for different software on ARCHER2 for Dec 2022. This data is also available as a CSV file.

Plot of usage by different software

This table shows job step size statistics in cores weighted by usage, total number of job steps and percent usage broken down by different software for Dec 2022.

Software Min Q1 Median Q3 Max Jobs Nodeh PercentUse kWh PercentEnergy Users Projects
Overall 1 640.0 1536.0 7168.0 131072 1091702 3950584.5 100.0 1434155.4 100.0 692 97
VASP 1 512.0 1024.0 2048.0 27648 105301 830452.7 21.0 301727.6 21.0 113 8
Unidentified 1 1024.0 4032.0 25600.0 131072 100113 697284.3 17.7 262879.4 18.3 318 77
CP2K 1 512.0 1536.0 5120.0 19200 46677 307682.5 7.8 103560.1 7.2 48 8
Python 1 16384.0 16384.0 16384.0 16384 133335 266094.8 6.7 64135.2 4.5 36 21
CASTEP 1 256.0 640.0 640.0 16384 584359 191110.6 4.8 73434.8 5.1 42 4
GROMACS 1 896.0 1280.0 2560.0 5120 38283 181464.6 4.6 84953.6 5.9 33 7
LAMMPS 1 128.0 640.0 2560.0 131072 23332 167143.3 4.2 71969.1 5.0 50 15
Met Office UM 1 1152.0 6464.0 6464.0 10323 5803 137158.0 3.5 44467.3 3.1 34 4
ChemShell 1 512.0 1024.0 4608.0 16128 1440 122865.0 3.1 36202.3 2.5 10 3
Code_Saturne 128 16384.0 32768.0 32768.0 65536 302 118329.4 3.0 19310.3 1.3 6 3
ONETEP 3 320.0 768.0 1024.0 1024 135 114310.8 2.9 46178.2 3.2 8 1
CRYSTAL 1 512.0 1024.0 1920.0 8448 5272 112972.1 2.9 32159.4 2.2 6 2
a.out 1 8192.0 8192.0 16384.0 28160 458 77147.1 2.0 31575.6 2.2 8 6
SENGA 128 1512.0 5760.0 7680.0 7680 253 71295.1 1.8 34256.4 2.4 8 3
Xcompact3d 64 8192.0 16384.0 32768.0 32768 654 62870.2 1.6 26699.0 1.9 7 4
NEMO 1 1204.0 7232.0 7296.0 8170 2538 61317.9 1.6 22816.5 1.6 25 5
OpenFOAM 1 512.0 1536.0 4096.0 8192 2335 61222.7 1.5 26423.3 1.8 38 14
NAMD 2 512.0 640.0 640.0 1600 10266 53295.4 1.3 28012.8 2.0 12 6
Nektar++ 8 4608.0 8192.0 12288.0 16384 333 51215.4 1.3 24711.4 1.7 9 4
FHI aims 1 512.0 960.0 1280.0 3840 6655 34173.0 0.9 12932.9 0.9 12 2
CASINO 128 512.0 1024.0 1024.0 3072 295 23153.1 0.6 9970.1 0.7 4 3
RMT 1 2048.0 2048.0 2432.0 17024 582 21972.6 0.6 10169.8 0.7 5 1
HANDE 64 2000.0 4000.0 8000.0 16000 268 18910.9 0.5 2185.2 0.2 1 1
MITgcm 24 126.0 354.0 624.0 1792 12120 18369.1 0.5 6773.0 0.5 12 2
iIMB 2304 3072.0 3072.0 10752.0 10752 53 18177.0 0.5 8984.1 0.6 2 1
Smilei 32 16384.0 16384.0 16384.0 16384 10 16387.6 0.4 4066.0 0.3 2 2
Nek5000 128 1280.0 2560.0 3840.0 5120 63 15187.2 0.4 6901.7 0.5 3 2
EPOCH 128 7680.0 7680.0 12800.0 15360 73 14434.4 0.4 6184.6 0.4 5 1
Quantum Espresso 4 128.0 256.0 512.0 1792 3884 12876.5 0.3 5354.3 0.4 16 3
PDNS3D 3200 3200.0 3200.0 20480.0 20480 17 9861.4 0.2 4979.6 0.3 2 1
SIESTA 1 960.0 1920.0 2560.0 3200 1500 9637.1 0.2 1149.6 0.1 7 2
3DNS 10944 10944.0 50217.0 50217.0 50217 26 8928.7 0.2 2742.0 0.2 1 1
HYDRA 1 3840.0 3840.0 3840.0 3840 199 8746.7 0.2 2734.4 0.2 6 3
GPAW 2 128.0 128.0 512.0 768 973 6604.5 0.2 2691.3 0.2 2 1
Cluster 512 512.0 512.0 512.0 512 316 5290.6 0.1 1816.6 0.1 1 1
NWChem 32 256.0 384.0 384.0 1024 2013 5182.1 0.1 1875.1 0.1 14 6
GS2 4 1536.0 2304.0 3712.0 8384 303 4253.2 0.1 1701.3 0.1 2 1
Arm Forge 1 6464.0 6464.0 6464.0 6464 42 4064.9 0.1 1462.3 0.1 11 10
EDAMAME 125 1331.0 1331.0 1331.0 1331 45 3311.2 0.1 1553.8 0.1 2 1
HemeLB 128 256.0 512.0 768.0 1024 81 3255.0 0.1 1321.7 0.1 1 1
CPMD 256 256.0 256.0 256.0 256 62 2076.3 0.1 971.5 0.1 1 1
Zacros 1 10000.0 15625.0 25600.0 25600 727 197.8 0.0 47.7 0.0 2 1
WRF 72 1024.0 1024.0 1024.0 1024 56 120.7 0.0 52.5 0.0 2 2
DL_POLY 16 16.0 16.0 16.0 16 96 112.1 0.0 28.6 0.0 1 1
TPLS 128 512.0 512.0 512.0 1024 41 66.7 0.0 31.4 0.0 2 1
ptau3d 32 32.0 256.0 256.0 256 8 2.0 0.0 2.1 0.0 1 1
OSIRIS 8 8.0 16.0 16.0 16 2 0.3 0.0 0.2 0.0 1 1
FVCOM 1 1.0 1.0 2.0 2 3 0.0 0.0 0.0 0.0 1 1

Historical usage data

Period Usage Heatmap Queue Heatmap Software usage plot Software usage data
Dec 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Nov 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Oct 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Sep 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Aug 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Jul 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Jun 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
May 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Apr 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Mar 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Feb 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Jan 2022 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Dec 2021 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)