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Author | Message |
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Aurum Send message Joined: 26 Dec 18 Posts: 9 Credit: 36,482,872 RAC: 0 |
What does the "t" signify in yafu-4t and yafu-32t ??? How does one choose the number of CPUs for each type of yafu WU ??? |
Aurum Send message Joined: 26 Dec 18 Posts: 9 Credit: 36,482,872 RAC: 0 |
What does the "t" signify in yafu-4t and yafu-32t ???Yo YoYo are you there??? Doesn't anybody know the answer??? |
Aurum Send message Joined: 26 Dec 18 Posts: 9 Credit: 36,482,872 RAC: 0 |
If you want to attempt to tame this beast put this in your app_config: <app_config> <app> <name>yafu-32t</name> <max_concurrent>1</max_concurrent> </app> <app_version> <app_name>yafu-32t</app_name> <plan_class>32t</plan_class> <avg_ncpus>32</avg_ncpus> <cmdline>--nthreads 32</cmdline> </app_version> </app_config>Then restart it: /etc/init.d/boinc-client restart |
yoyo_rkn Volunteer moderator Project administrator Project developer Project tester Volunteer developer Volunteer tester Project scientist Send message Joined: 22 Aug 11 Posts: 734 Credit: 17,574,526 RAC: 510 |
4t is thought to run on 4 threads 8t on 8 threads and so on. |
Aurum Send message Joined: 26 Dec 18 Posts: 9 Credit: 36,482,872 RAC: 0 |
The big ones use every core they can find if not constrained. |
mikey Send message Joined: 13 Apr 17 Posts: 15 Credit: 14,932,922 RAC: 370 |
The big ones use every core they can find if not constrained. So are you saying I need a 16 or 32 core machine to run the 16 and 32 core workunits? I know how to constrain them thru the settings but am asking as I do not own a 32 core machine. |
Chooka Send message Joined: 4 Mar 19 Posts: 11 Credit: 28,616,045 RAC: 0 |
I think the answer is "yes" Mikey. A 1950X will use all 32 threads to crunch a 32t task. |
mikey Send message Joined: 13 Apr 17 Posts: 15 Credit: 14,932,922 RAC: 370 |
I think the answer is "yes" Mikey. I figured that but am wondering if I NEED a 32 thread machine to crunch them? Can I for example fudge the numbers and use a 24 thread to make it THINK I have a 32 thread pc or do I even need too. The short answer is I can't seem to get any of the 32 thread tasks and me not having a 32 thread machine seems to mean I will never run them. |
yoyo_rkn Volunteer moderator Project administrator Project developer Project tester Volunteer developer Volunteer tester Project scientist Send message Joined: 22 Aug 11 Posts: 734 Credit: 17,574,526 RAC: 510 |
The 16t and 32t Tasks are not just for fun 16t or 32t Tasks. They can be very cpu consuming, means they can run 2 days on 32 cores. So if you run them on just 8 cores they will run very long. But on every system you can fake the number of cores BOINC sees. On a 8 core system you can state there are e.g. 60 cores and BOINC will handle it as there are 60 cores. See ncpus here https://boinc.berkeley.edu/wiki/Client_configuration . |
Chooka Send message Joined: 4 Mar 19 Posts: 11 Credit: 28,616,045 RAC: 0 |
I just gave up on a 32T task after it had been running for nearly 7 days, 3 of which it sat at 100%. I could see the task in my task manager and it was using about 4% of my CPU. After I restarted BOINC, the task restarted at about 76% complete and the 7 days disappeared to be replaced with about 8hrs. After I left it over night, then aborted it. 7 days locking up 32 threads is just a bridge too far. |