use standard limit for A64FX: only use quarter of available cores + fix determining level of parallelism in a way compatible with EasyBuild 4.x and 5.x

[boegel]

No description provided.

[boegel]

bot: build repo:eessi.io-2023.06-software instance:eessi-bot-mc-aws arch:x86_64/amd/zen2

[eessi-bot-aws]

New job on instance eessi-bot-mc-aws for CPU micro-architecture x86_64-amd-zen2 for repository eessi.io-2023.06-software in job dir /project/def-users/SHARED/jobs/2025.06/pr_17/70239

date	job status	comment
Jun 17 18:44:24 UTC 2025	submitted	job id 70239 awaits release by job manager
Jun 17 18:45:18 UTC 2025	released	job awaits launch by Slurm scheduler
Jun 17 18:50:30 UTC 2025	running	job 70239 is running
Jun 17 18:58:53 UTC 2025	finished	😁 SUCCESS (click triangle for details) Details ✅ job output file slurm-70239.out ✅ no message matching FATAL: ✅ no message matching ERROR: ✅ no message matching FAILED: ✅ no message matching required modules missing: ✅ found message(s) matching No missing installations ✅ found message matching .tar.gz created! Artefacts eessi-2023.06-software-linux-x86_64-amd-zen2-17501862780.tar.gz size: 0 MiB (17461 bytes) entries: 1 modules under 2023.06/software/linux/x86_64/amd/zen2/modules/all no module files in tarball software under 2023.06/software/linux/x86_64/amd/zen2/software no software packages in tarball other under 2023.06/software/linux/x86_64/amd/zen2 2023.06/init/easybuild/eb_hooks.py
Jun 17 18:58:53 UTC 2025	test result	😁 SUCCESS (click triangle for details) ReFrame Summary [ OK ] ( 1/10) EESSI_LAMMPS_lj %device_type=cpu %module_name=LAMMPS/29Aug2024-foss-2023b-kokkos %scale=1_node /aeb2d9df @BotBuildTests:x86_64_amd_zen2+default P: perf: 435.203 timesteps/s (r:0, l:None, u:None) [ OK ] ( 2/10) EESSI_LAMMPS_lj %device_type=cpu %module_name=LAMMPS/2Aug2023_update2-foss-2023a-kokkos %scale=1_node /04ff9ece @BotBuildTests:x86_64_amd_zen2+default P: perf: 443.195 timesteps/s (r:0, l:None, u:None) [ OK ] ( 3/10) EESSI_OSU_coll %benchmark_info=mpi.collective.osu_allreduce %module_name=OSU-Micro-Benchmarks/7.2-gompi-2023b %scale=1_node %device_type=cpu /775175bf @BotBuildTests:x86_64_amd_zen2+default P: latency: 1.88 us (r:0, l:None, u:None) [ OK ] ( 4/10) EESSI_OSU_coll %benchmark_info=mpi.collective.osu_allreduce %module_name=OSU-Micro-Benchmarks/7.1-1-gompi-2023a %scale=1_node %device_type=cpu /52707c40 @BotBuildTests:x86_64_amd_zen2+default P: latency: 1.94 us (r:0, l:None, u:None) [ OK ] ( 5/10) EESSI_OSU_coll %benchmark_info=mpi.collective.osu_alltoall %module_name=OSU-Micro-Benchmarks/7.2-gompi-2023b %scale=1_node %device_type=cpu /b1aacda9 @BotBuildTests:x86_64_amd_zen2+default P: latency: 4.49 us (r:0, l:None, u:None) [ OK ] ( 6/10) EESSI_OSU_coll %benchmark_info=mpi.collective.osu_alltoall %module_name=OSU-Micro-Benchmarks/7.1-1-gompi-2023a %scale=1_node %device_type=cpu /c6bad193 @BotBuildTests:x86_64_amd_zen2+default P: latency: 4.09 us (r:0, l:None, u:None) [ OK ] ( 7/10) EESSI_OSU_pt2pt_CPU %benchmark_info=mpi.pt2pt.osu_latency %module_name=OSU-Micro-Benchmarks/7.2-gompi-2023b %scale=1_node /15cad6c4 @BotBuildTests:x86_64_amd_zen2+default P: latency: 0.61 us (r:0, l:None, u:None) [ OK ] ( 8/10) EESSI_OSU_pt2pt_CPU %benchmark_info=mpi.pt2pt.osu_latency %module_name=OSU-Micro-Benchmarks/7.1-1-gompi-2023a %scale=1_node /6672deda @BotBuildTests:x86_64_amd_zen2+default P: latency: 0.56 us (r:0, l:None, u:None) [ OK ] ( 9/10) EESSI_OSU_pt2pt_CPU %benchmark_info=mpi.pt2pt.osu_bw %module_name=OSU-Micro-Benchmarks/7.2-gompi-2023b %scale=1_node /2a9a47b1 @BotBuildTests:x86_64_amd_zen2+default P: bandwidth: 7284.86 MB/s (r:0, l:None, u:None) [ OK ] (10/10) EESSI_OSU_pt2pt_CPU %benchmark_info=mpi.pt2pt.osu_bw %module_name=OSU-Micro-Benchmarks/7.1-1-gompi-2023a %scale=1_node /1b24ab8e @BotBuildTests:x86_64_amd_zen2+default P: bandwidth: 7301.92 MB/s (r:0, l:None, u:None) [ PASSED ] Ran 10/10 test case(s) from 10 check(s) (0 failure(s), 0 skipped, 0 aborted) Details ✅ job output file slurm-70239.out ✅ no message matching ERROR: ✅ no message matching [\s*FAILED\s*].*Ran .* test case
Jun 18 19:03:29 UTC 2025	uploaded	transfer of eessi-2023.06-software-linux-x86_64-amd-zen2-17501862780.tar.gz to S3 bucket succeeded

[trz42]

Would have probably used set_maximum, 12, but unlikely that this makes a difference for A64FX. Will it work with EB 4.9.4?

[boegel]

Would have probably used set_maximum, 12, but unlikely that this makes a difference for A64FX. Will it work with EB 4.9.4?

@trz42 I went for the "divide by 4" approach because that effectively means we quadruple available memory, regardless of much cores are available. If we for some reason start requested partial nodes (say 12 cores rather than 48), we would be in trouble again.

Should work file with EasyBuild 4.9.4 since there we still use parallel rather than max_parallel?

[ocaisa]

I think we should also address EESSI/software-layer#1104 here, see boegel#1

[boegel]

bot: build repo:eessi.io-2023.06-software instance:eessi-bot-mc-aws arch:x86_64/amd/zen2

[eessi-bot-aws]

New job on instance eessi-bot-mc-aws for CPU micro-architecture x86_64-amd-zen2 for repository eessi.io-2023.06-software in job dir /project/def-users/SHARED/jobs/2025.06/pr_17/70873

date	job status	comment
Jun 20 07:58:42 UTC 2025	submitted	job id 70873 awaits release by job manager
Jun 20 07:58:49 UTC 2025	released	job awaits launch by Slurm scheduler
Jun 20 08:25:53 UTC 2025	running	job 70873 is running
Jun 20 08:34:00 UTC 2025	finished	😁 SUCCESS (click triangle for details) Details ✅ job output file slurm-70873.out ✅ no message matching FATAL: ✅ no message matching ERROR: ✅ no message matching FAILED: ✅ no message matching required modules missing: ✅ found message(s) matching No missing installations ✅ found message matching .tar.gz created! Artefacts eessi-2023.06-software-linux-x86_64-amd-zen2-17504079850.tar.gz size: 0 MiB (17439 bytes) entries: 1 modules under 2023.06/software/linux/x86_64/amd/zen2/modules/all no module files in tarball software under 2023.06/software/linux/x86_64/amd/zen2/software no software packages in tarball other under 2023.06/software/linux/x86_64/amd/zen2 2023.06/init/easybuild/eb_hooks.py
Jun 20 08:34:00 UTC 2025	test result	😁 SUCCESS (click triangle for details) ReFrame Summary [ OK ] ( 1/10) EESSI_LAMMPS_lj %device_type=cpu %module_name=LAMMPS/29Aug2024-foss-2023b-kokkos %scale=1_node /aeb2d9df @BotBuildTests:x86_64_amd_zen2+default P: perf: 441.226 timesteps/s (r:0, l:None, u:None) [ OK ] ( 2/10) EESSI_LAMMPS_lj %device_type=cpu %module_name=LAMMPS/2Aug2023_update2-foss-2023a-kokkos %scale=1_node /04ff9ece @BotBuildTests:x86_64_amd_zen2+default P: perf: 447.051 timesteps/s (r:0, l:None, u:None) [ OK ] ( 3/10) EESSI_OSU_coll %benchmark_info=mpi.collective.osu_allreduce %module_name=OSU-Micro-Benchmarks/7.2-gompi-2023b %scale=1_node %device_type=cpu /775175bf @BotBuildTests:x86_64_amd_zen2+default P: latency: 2.02 us (r:0, l:None, u:None) [ OK ] ( 4/10) EESSI_OSU_coll %benchmark_info=mpi.collective.osu_allreduce %module_name=OSU-Micro-Benchmarks/7.1-1-gompi-2023a %scale=1_node %device_type=cpu /52707c40 @BotBuildTests:x86_64_amd_zen2+default P: latency: 1.76 us (r:0, l:None, u:None) [ OK ] ( 5/10) EESSI_OSU_coll %benchmark_info=mpi.collective.osu_alltoall %module_name=OSU-Micro-Benchmarks/7.2-gompi-2023b %scale=1_node %device_type=cpu /b1aacda9 @BotBuildTests:x86_64_amd_zen2+default P: latency: 3.98 us (r:0, l:None, u:None) [ OK ] ( 6/10) EESSI_OSU_coll %benchmark_info=mpi.collective.osu_alltoall %module_name=OSU-Micro-Benchmarks/7.1-1-gompi-2023a %scale=1_node %device_type=cpu /c6bad193 @BotBuildTests:x86_64_amd_zen2+default P: latency: 4.19 us (r:0, l:None, u:None) [ OK ] ( 7/10) EESSI_OSU_pt2pt_CPU %benchmark_info=mpi.pt2pt.osu_latency %module_name=OSU-Micro-Benchmarks/7.2-gompi-2023b %scale=1_node /15cad6c4 @BotBuildTests:x86_64_amd_zen2+default P: latency: 0.59 us (r:0, l:None, u:None) [ OK ] ( 8/10) EESSI_OSU_pt2pt_CPU %benchmark_info=mpi.pt2pt.osu_latency %module_name=OSU-Micro-Benchmarks/7.1-1-gompi-2023a %scale=1_node /6672deda @BotBuildTests:x86_64_amd_zen2+default P: latency: 0.57 us (r:0, l:None, u:None) [ OK ] ( 9/10) EESSI_OSU_pt2pt_CPU %benchmark_info=mpi.pt2pt.osu_bw %module_name=OSU-Micro-Benchmarks/7.2-gompi-2023b %scale=1_node /2a9a47b1 @BotBuildTests:x86_64_amd_zen2+default P: bandwidth: 7513.56 MB/s (r:0, l:None, u:None) [ OK ] (10/10) EESSI_OSU_pt2pt_CPU %benchmark_info=mpi.pt2pt.osu_bw %module_name=OSU-Micro-Benchmarks/7.1-1-gompi-2023a %scale=1_node /1b24ab8e @BotBuildTests:x86_64_amd_zen2+default P: bandwidth: 7297.25 MB/s (r:0, l:None, u:None) [ PASSED ] Ran 10/10 test case(s) from 10 check(s) (0 failure(s), 0 skipped, 0 aborted) Details ✅ job output file slurm-70873.out ✅ no message matching ERROR: ✅ no message matching [\s*FAILED\s*].*Ran .* test case
Jun 20 08:45:08 UTC 2025	uploaded	transfer of eessi-2023.06-software-linux-x86_64-amd-zen2-17504079850.tar.gz to S3 bucket succeeded

[ocaisa]

LGTM