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 Service Alert 2024-03-27 09:00 2024-03-28 09:00 All parallel jobs launched using srun All parallel jobs launched using `srun` will have their IO profile captured by the Darshan IO profiling tool. In rare cases this may cause jobs to fail or impact performance. Users can disable Darshan by adding the line `module remove darshan` before they use `srun` in their job submission scripts. Capturing data on the IO use on ARCHER2 to improve the service.

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 2024-03-12 09:30 2024-03-13 15:30 ARCHER2 GPU nodes The ARCHER2 GPU nodes are reserved
Tuesday 12-03-2024 from 09:30 to 17:00
Wednesday 13-03-2024 from 09:30 to 15:30
The GPU nodes are being used for a training course. Normal access will be restored at 15:30 on Wednesday when the course ends.
Resolved Service Alert 2024-03-08 09:00 2024-03-12 18:30 Compute nodes We are currently using a rolling-reboot to update the compute nodes on ARCHER2. This will not impact running work but once jobs finish, compute nodes will be rebooted and then be returned to service with the new updated software. Serial work is unaffected. Updates to ARCHER2 compute nodes
Resolved Service Alert 2024-02-23 12:30 2024-02-23 16:40 Some ARCHER2 compute nodes after a power outage New jobs had been stopped and some nodes down. New jobs now running and almost all nodes back in service. Some compute nodes temporarily lost power

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
Completed Partial 2024-03-07 09:00 2024-03-07 12:30 RDFaaS /epsrc and /general file systems Users will not be able to access data on /epsrc and /general during this maintenance Replacement of Power Supply Unit (PSU) on the RDFaas (E1000)
Completed Partial TBC ARCHER2 Running jobs will continue but users will not be able to submit new jobs. Users will be notified when job submission is available again. Integrating the GPU nodes into ARCHER2

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 Feb 2024. 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 Feb 2024. 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 Feb 2024.

Software Min Q1 Median Q3 Max Jobs Nodeh PercentUse Users Projects
Overall 1 512.0 1024.0 3200.0 524288 3645902 3405862.2 100.0 889 132
VASP 1 512.0 1024.0 1280.0 8192 457284 841757.0 24.7 148 17
Unknown 1 512.0 2048.0 8192.0 262144 1187931 522632.1 15.3 444 91
Met Office UM 1 1024.0 1152.0 2304.0 12544 69371 328121.3 9.6 51 3
LAMMPS 1 512.0 1024.0 2560.0 131072 12385 237879.5 7.0 53 22
CP2K 1 416.0 512.0 1024.0 8192 47145 199056.1 5.8 59 12
GROMACS 1 512.0 1024.0 2560.0 6144 9691 187119.6 5.5 44 8
ChemShell 1 1536.0 6656.0 10880.0 11136 1221 104103.1 3.1 20 4
OpenFOAM 1 1024.0 1536.0 4096.0 12800 2471 103781.1 3.0 39 15
CASTEP 1 192.0 512.0 4096.0 12800 242628 79384.1 2.3 54 9
MITgcm 1 200.0 615.0 624.0 1920 25169 78114.5 2.3 17 2
Code_Saturne 128 4096.0 4096.0 131072.0 262144 236 72443.2 2.1 7 4
FHI aims 1 512.0 1536.0 1536.0 4096 27947 65787.8 1.9 20 3
Xcompact3d 4 9216.0 32768.0 32768.0 524288 441 56577.6 1.7 12 7
Quantum Espresso 1 256.0 896.0 1024.0 2048 104209 55549.7 1.6 18 6
Python 1 216.0 1024.0 2816.0 9216 1373683 52485.8 1.5 67 29
3DNS 4 17680.0 26928.0 30512.0 50217 57 47363.7 1.4 3 1
NWChem 1 384.0 640.0 1024.0 3840 45168 40929.3 1.2 14 5
Nektar++ 16 3840.0 5120.0 6400.0 12800 868 38849.5 1.1 8 2
NEMO 1 1024.0 1568.0 6528.0 7232 23324 36368.6 1.1 51 4
SENGA 1 13560.0 13560.0 13560.0 37500 122 34241.9 1.0 6 3
ONETEP 1 128.0 512.0 1024.0 1024 2572 26459.6 0.8 9 2
BOUT++ 768 768.0 1344.0 1344.0 1344 141 26268.4 0.8 1 1
SPARTA 1024 65536.0 65536.0 65536.0 65536 9 25916.2 0.8 1 1
EDAMAME 64 1331.0 1331.0 1331.0 8000 342 22545.6 0.7 2 1
GENE 36 4096.0 4096.0 4096.0 10240 141 15487.3 0.5 3 2
Hydro3D 200 2640.0 2640.0 2640.0 16000 215 11089.9 0.3 3 3
CESM 64 1024.0 2048.0 4096.0 4096 2273 9556.2 0.3 7 1
SU2 1 1024.0 3840.0 7680.0 7680 1190 9421.2 0.3 6 2
OSIRIS 12288 12288.0 12288.0 12288.0 12288 17 9140.6 0.3 2 2
iIMB 768 4608.0 4608.0 10752.0 10752 44 8952.9 0.3 2 2
CRYSTAL 1 128.0 256.0 32768.0 32768 816 8358.0 0.2 10 5
a.out 1 256.0 256.0 512.0 2560 320 7427.1 0.2 14 9
OpenSBLI 128 8192.0 8192.0 8192.0 131072 55 6631.4 0.2 2 2
WRF 64 320.0 320.0 384.0 384 219 6198.0 0.2 5 3
RMT 512 2432.0 2432.0 2432.0 2432 184 5672.6 0.2 3 1
NAMD 16 512.0 512.0 512.0 512 474 4222.0 0.1 5 4
HYDRA 1 6400.0 10240.0 12800.0 12800 469 3333.4 0.1 6 4
CASINO 1 1024.0 1280.0 1920.0 2560 113 3173.3 0.1 1 1
EPOCH 1 16384.0 16384.0 16384.0 16384 195 2215.3 0.1 4 1
TPLS 64 1024.0 2048.0 2048.0 2048 37 1933.2 0.1 2 2
Nek5000 256 512.0 512.0 768.0 768 38 1811.4 0.1 1 1
SIESTA 1 2048.0 2048.0 2560.0 6656 1111 1488.2 0.0 5 3
GS2 32 408.0 1536.0 1664.0 1792 1272 1403.1 0.0 2 1
DL_MESO 8 64.0 64.0 64.0 128 370 1295.4 0.0 2 1
SBLI 1 8192.0 8192.0 8192.0 8192 283 914.6 0.0 3 2
PDNS3D 512 1024.0 1024.0 1024.0 1024 99 790.9 0.0 2 1
FVCOM 1 640.0 640.0 640.0 896 44 600.2 0.0 2 1
ptau3d 1 512.0 512.0 512.0 1024 72 343.8 0.0 3 3
DL_POLY 8 64.0 4096.0 4096.0 4096 644 185.1 0.0 3 3
HemeLB 1 768.0 768.0 768.0 2048 30 135.1 0.0 3 1
Arm Forge 2 1024.0 1024.0 1024.0 2048 218 106.2 0.0 8 7
Smilei 8 32.0 32.0 32.0 2048 275 55.4 0.0 3 1
Elk 4 32.0 32.0 256.0 512 71 48.9 0.0 2 2
Fluidity 8 8192.0 8192.0 8192.0 8192 7 39.6 0.0 1 1
AxiSEM3D 4 48.0 48.0 48.0 480 140 32.9 0.0 1 1
GPAW 32 32.0 64.0 64.0 64 4 24.0 0.0 1 1
Amber 16 896.0 1280.0 1408.0 2048 45 22.0 0.0 1 1
ECOGEN 256 256.0 256.0 256.0 256 2 17.7 0.0 1 1

Historical usage data

Period Usage Heatmap Queue Heatmap Software usage plot Software usage data
Feb 2024 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Jan 2024 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Dec 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Nov 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Oct 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Sep 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Aug 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Jul 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Jun 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
May 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Apr 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Mar 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Feb 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
Jan 2023 Usage heatmap (PNG) Queue heatmap (PNG) Software usage plot (PNG) Software usage and size data (CSV)
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)