Message boards :
Number crunching :
Tried running nbody: CPU temps way too low.
Message board moderation
Author | Message |
---|---|
![]() ![]() Send message Joined: 18 Nov 08 Posts: 291 Credit: 2,461,693,501 RAC: 0 ![]() ![]() |
root@dual-linux:/var/lib/boinc/projects/milkyway.cs.rpi.edu_milkyway# sensors coretemp-isa-0000 Adapter: ISA adapter Core 0: +26.0°C (high = +80.0°C, crit = +96.0°C) Core 1: +29.0°C (high = +80.0°C, crit = +96.0°C) Core 2: +32.0°C (high = +80.0°C, crit = +96.0°C) Core 8: +32.0°C (high = +80.0°C, crit = +96.0°C) Core 9: +28.0°C (high = +80.0°C, crit = +96.0°C) Core 10: +28.0°C (high = +80.0°C, crit = +96.0°C) amdgpu-pci-0400 Adapter: PCI adapter vddgfx: 1.02 V fan1: 2981 RPM (min = 0 RPM, max = 3700 RPM) edge: +46.0°C (crit = +94.0°C, hyst = -273.1°C) power1: 79.02 W (cap = 90.00 W) coretemp-isa-0001 Adapter: ISA adapter Core 0: +23.0°C (high = +80.0°C, crit = +96.0°C) Core 1: +21.0°C (high = +80.0°C, crit = +96.0°C) Core 2: +25.0°C (high = +80.0°C, crit = +96.0°C) Core 8: +24.0°C (high = +80.0°C, crit = +96.0°C) Core 9: +22.0°C (high = +80.0°C, crit = +96.0°C) Core 10: +18.0°C (high = +80.0°C, crit = +96.0°C) intel5500-pci-00a3 Adapter: PCI adapter temp1: +78.5°C (high = +100.0°C, hyst = +95.0°C) (crit = +110.0°C) Dual Xeon Ubuntu: total of 12 cores, 24 huperthreads. Looks both CPUs are idling. This cannot be right? Is the command ' --threads": documented anywhere? I tried setting it to 8 and leaving it off entirely then 32. Made no difference. l assume that "threads" refers to system or kernel threads and not hyperthread allocaton. I also assume "avg_ncpu" refers to hyperthreads of which there are 24 available. app_config.xml <app_config> <app> <name>milkyway_nbody</name> <max_concurrent>2</max_concurrent> </app> <app_version> <app_name>milkyway_nbody</app_name> <plan_class>mt</plan_class> <avg_ncpus>8</avg_ncpus> <cmdline>--nthreads 32</cmdline> </app_version> </app_config> |
Send message Joined: 31 Mar 12 Posts: 96 Credit: 152,502,177 RAC: 510 ![]() ![]() |
I took a look at a couple of your hosts, are you sure you have selected the nbody application? |
![]() ![]() Send message Joined: 18 Nov 08 Posts: 291 Credit: 2,461,693,501 RAC: 0 ![]() ![]() |
I took a look at a couple of your hosts, are you sure you have selected the nbody application? From boinc tasks Milkyway@Home 1.82 Milkyway@home N-Body Simulation (mt) de_nbody_02_27_2023_v182_pal5__data__3_1680661949_11332_0 02:15:26 (23:29:56) 130.12 71.177 00:54:50 4/18/2023 12:56:38 PM 32.0 °C Running 8C 0 dual-linux Milkyway@Home 1.82 Milkyway@home N-Body Simulation (mt) de_nbody_02_27_2023_v182_pal5__data__2_1680661949_11309_0 01:18:41 (12:19:55) 117.55 60.215 01:29:01 4/18/2023 12:56:38 PM 32.0 °C Running 8C 0 dual-linux the "0" between the 8c and the dual-linux means there is no cpu throttling The Intel i9-7900x has a more reasonable temperature of 63.9 c Milkyway@Home 1.82 Milkyway@home N-Body Simulation (mt) de_nbody_02_27_2023_v182_pal5__data__2_1674667492_1117989_3 01:00:41 (05:37:38) 69.55 98.758 00:00:45 4/18/2023 7:21:59 AM 63.9 °C Running 8C 0 JYSArea51 Milkyway@Home 1.82 Milkyway@home N-Body Simulation (mt) de_nbody_02_27_2023_v182_pal5__data__1_1680661949_7646_0 00:25:56 (02:51:44) 82.77 15.649 02:19:48 4/18/2023 7:21:59 AM 63.9 °C Running 8C 0 JYSArea51 |
Send message Joined: 31 Mar 12 Posts: 96 Credit: 152,502,177 RAC: 510 ![]() ![]() |
Perhaps you have exotic cooling :D Also the command switch is --nthreads I guess it shouldn't cause concern it does look like the task is progressing? |
![]() ![]() Send message Joined: 24 Jan 11 Posts: 712 Credit: 551,844,830 RAC: 44,554 ![]() ![]() ![]() ![]() |
Simply a matter of your dual Xeon not reporting temps correctly through TThrottle I assume. Has nothing to do with the application or you app_config. You know that the 0℃ temp is impossible unless you are using extreme cooling. ![]() |
![]() ![]() Send message Joined: 18 Nov 08 Posts: 291 Credit: 2,461,693,501 RAC: 0 ![]() ![]() |
Both are on separate closed liquid cooling. Temp shown by boinctasks is 32 deg. the "0" is the throttling percentage, not the temperature. The app finished and is awaiting verification so possible the temps are OK ! https://milkyway.cs.rpi.edu/milkyway/results.php?hostid=959265&offset=0&show_names=0&state=3&appid=2 |
![]() ![]() Send message Joined: 18 Nov 08 Posts: 291 Credit: 2,461,693,501 RAC: 0 ![]() ![]() |
Perhaps you have exotic cooling :D That was just a typo, the xml has --nthreads The following is all the command arguments that I know of. Had not seen --nthreads before <cmdline>--non-responsive --verbose --gpu-target-frequency 1 --gpu-polling-mode -1 --gpu-wait-factor 0 --process-priority 4 --gpu-disable-checkpointing</cmdline> |
![]() ![]() Send message Joined: 24 Jan 11 Posts: 712 Credit: 551,844,830 RAC: 44,554 ![]() ![]() ![]() ![]() |
The Boinc "bible" for client/application configuration is here. https://boinc.berkeley.edu/wiki/Client_configuration#Application_configuration It specifically shows an example for MT application configuration and shows the --nthreads parameter syntax. ![]() |
©2024 Astroinformatics Group