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
Ongoing At-Risk 2022-06-09 09:00 tbc Essential electrical work which will include the cables which feed the Power Distribution Units (PDUs) on ARCHER2 No user impact is expected as there is redundancy built into the system Essential electrical work
Ongoing Issue 2022-04-19 10:00 System Users may see issues with slow disk I/O and slow response on login nodes. There is a heavy load on the /work filesystems. HPE are investigating the cause and we will update as we get more information.

Previous Service Alerts

This table 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 At-Risk 2022-06-29 10:00 2022-06-29 12:00 Four cabinets will be removed from service and then returned to service Reduced number of compute nodes available to users Successfully tested the phased approach for future planned work
Resolved Service Alert 2022-06-15 20:30 2022-06-16 16:30 Compute nodes in cabinets 21-23 734 compute nodes were unavailable to users Power issue with cabinets 21-23
Resolved At-Risk 2022-06-08 09:00 2022-06-13 16:00 Installation of new Programming Environment (22.04) No user impact is expected. The new PE will not be the default module so users will need to load it if they wish to use the latest version. New updated PE is available with several improvements and bug fixes.

Maintenance Sessions

No scheduled maintenance

Maintenance Logs for previous periods

Previous maintenance logs

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 May 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 May 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 May 2022.

Software Min Q1 Median Q3 Max Jobs Nodeh PercentUse
Overall 1 1024.0 3840.0 12288.0 524288 626108 3310826.8 100.0
Unidentified 1 3000.0 32768.0 131072.0 524288 118384 926716.5 28.0
VASP 1 512.0 2048.0 3840.0 65536 78122 760739.9 23.0
CP2K 1 256.0 1280.0 4096.0 69120 36302 198832.6 6.0
PDNS3D 3200 12800.0 12800.0 64000.0 64000 73 154972.0 4.7
SENGA 480 3840.0 5760.0 5760.0 7680 144 152302.1 4.6
CASTEP 5 512.0 1280.0 2560.0 3072 21346 122539.1 3.7
GROMACS 1 144.0 640.0 1440.0 4096 9117 112885.2 3.4
LAMMPS 1 384.0 1024.0 1024.0 128000 15320 78590.8 2.4
NEMO 1 4736.0 7910.0 9984.0 9984 3230 68701.0 2.1
CASINO 128 512.0 1024.0 2048.0 8192 1225 67170.4 2.0
Met Office UM 2 384.0 1152.0 6464.0 6464 10040 66040.3 2.0
iIMB 3072 7680.0 7680.0 7680.0 10240 68 60049.1 1.8
Nektar++ 1 5120.0 8192.0 38400.0 38400 434 51382.4 1.6
OpenFOAM 2 1024.0 1536.0 4096.0 16384 2560 47656.4 1.4
ChemShell 1 336.0 336.0 1024.0 5120 910 44195.2 1.3
Code_Saturne 1 8960.0 11264.0 16384.0 524288 331 43597.5 1.3
EPOCH 128 3840.0 3840.0 5120.0 7680 769 43421.4 1.3
RMT 1 1920.0 2048.0 2432.0 17152 1169 38433.0 1.2
NAMD 32 1600.0 1600.0 6400.0 17280 2752 32343.7 1.0
Quantum Espresso 1 288.0 1200.0 1600.0 3584 2416 31542.5 1.0
Xcompact3d 4 3072.0 3072.0 65536.0 131072 312 29843.6 0.9
CRYSTAL 128 512.0 512.0 1024.0 32768 397 23901.0 0.7
Python 1 16384.0 16384.0 16384.0 16384 290661 23013.8 0.7
3DNS 10944 10944.0 29216.0 40320.0 40320 65 21939.4 0.7
FHI aims 1 128.0 512.0 1024.0 16384 5229 21882.9 0.7
MITgcm 2 240.0 354.0 400.0 2000 10708 17727.6 0.5
Nek5000 128 1280.0 1280.0 1280.0 4096 61 16738.5 0.5
CPMD 256 256.0 1024.0 1024.0 1024 209 9784.3 0.3
ONETEP 1 256.0 256.0 256.0 16384 1297 7733.1 0.2
a.out 1 2048.0 3168.0 6336.0 36864 1717 7068.7 0.2
ptau3d 8 256.0 384.0 512.0 1024 103 6184.3 0.2
HANDE 1 640.0 640.0 640.0 640 370 4796.9 0.1
SIESTA 64 768.0 768.0 768.0 768 34 4761.3 0.1
DL_POLY 128 1280.0 1280.0 1280.0 1280 190 4291.6 0.1
GPAW 1 128.0 512.0 512.0 512 419 2930.0 0.1
NWChem 2 256.0 256.0 256.0 1024 7836 2575.7 0.1
GS2 1 512.0 512.0 3168.0 3168 369 1575.6 0.0
Smilei 1024 2048.0 131072.0 131072.0 131072 14 830.0 0.0
DL_MESO 8 4096.0 8192.0 16384.0 16384 171 388.1 0.0
AxiSEM3D 120 512.0 512.0 512.0 8192 12 305.1 0.0
SBLI 8192 8192.0 8192.0 8192.0 8192 1 214.9 0.0
WRF 32 72.0 1024.0 1024.0 1024 33 104.1 0.0
HemeLB 32 128.0 128.0 128.0 1280 10 60.3 0.0
TPLS 128 128.0 128.0 4096.0 4096 7 30.4 0.0
CESM 384 1024.0 1024.0 1024.0 1536 26 21.9 0.0
OSIRIS 8 32.0 32.0 32.0 32 11 7.4 0.0
CloverLeaf 1 23.0 64.0 78.0 128 702 2.0 0.0
PRECISE 1 128.0 128.0 256.0 256 85 1.2 0.0
UKRmol+ 1 8.0 32.0 64.0 64 332 1.1 0.0
HYDRA 1 2000.0 2000.0 2000.0 2000 3 0.7 0.0
ECHAM 384 384.0 384.0 384.0 384 8 0.3 0.0
FVCOM 1 1.0 1.0 2.0 2 4 0.0 0.0

Historical usage data