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New runs of MilkyWay Nbody out
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![]() Send message Joined: 21 Aug 18 Posts: 59 Credit: 5,350,675 RAC: 0 ![]() ![]() |
Hello all, I just wanted to let you know that new runs for the newest version of the MilkyWay@home Nbody program have just been released. The names of these new runs are: -de_nbody_04_23_2019_v176_40k__data__1 -de_nbody_04_23_2019_v176_40k__data__2 -de_nbody_04_23_2019_v176_40k__data__3 I apologize for any inconveniences over the last few days. If you have any issues with these runs, please let me know on this thread and I will try to sort them out as quickly as I can. Just so you know, some of the changes we made for this nbody version take runs that would've taken extremely long times to compute and return success immediately. As such, credit for nbody may be a little strange until the server recognizes the new average runtime. Also note that there is no longer support for multi-threaded. Again, thank you all for your continued support. -Eric Mendelsohn |
![]() Send message Joined: 17 Nov 09 Posts: 4 Credit: 111,166,377 RAC: 0 ![]() ![]() |
Just checked my machines and see all of the my nbody tasks are failing with computation errors. I looked and can see the executable in the project folder so appears to be an issue on the server side. The tasks are "de_nbody_4_16_2017_v174_20k__sim..." and are associate with the app "milkyway_nbody_1.76_x86_64-pc-linux-gnu" Don't know enough to say these are new or just new to me. Ron |
Send message Joined: 15 Nov 10 Posts: 5 Credit: 12,249,221 RAC: 20 ![]() ![]() |
I am also getting large numbers of failures with the 1.76 work. They run for a few seconds at most then error out. Checking my error list the phrase "too many errors may have a bug" comes up repeatedly. |
Send message Joined: 15 Nov 10 Posts: 5 Credit: 12,249,221 RAC: 20 ![]() ![]() |
Application Milkyway@home N-Body Simulation 1.76 Name de_nbody_4_16_2017_v174_20k__sim_ex_1_1555431910_15537 State Computation error Received Wed 24 Apr 2019 16:00:56 AEST Report deadline Mon 06 May 2019 16:00:55 AEST Estimated computation size 31,856 GFLOPs CPU time 00:00:00 Elapsed time 00:00:05 Executable milkyway_nbody_1.76_x86_64-pc-linux-gnu |
Send message Joined: 15 Apr 19 Posts: 2 Credit: 889,657 RAC: 0 ![]() ![]() |
Application Milkyway@home N-Body Simulation 1.76 Name de_nbody_4_16_2017_v174_20k__sim_ex_1_1555431910_354929 State Computation error Received 04/24/19 07:45:42 Report deadline 05/06/19 07:45:41 Estimated computation size 48029 GFLOPs CPU time 00:00:00 Elapsed time 00:00:09 Executable milkyway_nbody_1.76_x86_64-pc-linux-gnu |
Send message Joined: 15 Nov 10 Posts: 5 Credit: 12,249,221 RAC: 20 ![]() ![]() |
Just a thought, but if you guys could stop sending out these units till they're sorted, that would be great. |
Send message Joined: 18 Feb 12 Posts: 8 Credit: 10,392,722 RAC: 0 ![]() ![]() |
I’ve stopped all new MilkyWay work until this is sorted. Waste of my machine. |
Send message Joined: 25 Feb 13 Posts: 580 Credit: 94,200,158 RAC: 0 ![]() ![]() ![]() |
We can cancel all of these workunits and abort them on the server side. I'll do that now. The only ones that should be erroring are those which haven't cleared the work queue yet. Sorry about that. Best, Jake |
Send message Joined: 18 Feb 12 Posts: 8 Credit: 10,392,722 RAC: 0 ![]() ![]() |
Well I’ll be. Restarted and lo and behold … Milkyway@Home 1.76 Milkyway@home N-Body Simulation de_nbody_04_23_2019_v176_40k__data__1_1555431910_414159_0 00:22:17 (00:21:37) 4/24/2019 1:21:01 PM 4/24/2019 1:28:56 PM 97.008 Reported: OK 11.52 MB 15.33 MB 5 others and a bunch currently running. |
Send message Joined: 25 Feb 13 Posts: 580 Credit: 94,200,158 RAC: 0 ![]() ![]() ![]() |
Glad I could help! Best, Jake |
![]() Send message Joined: 31 Oct 10 Posts: 83 Credit: 38,632,375 RAC: 0 ![]() ![]() |
How does a person opt OUT of the N-body work? There used to be a way to do this in Preferences, but I can no longer find that option. |
![]() Send message Joined: 21 Aug 18 Posts: 59 Credit: 5,350,675 RAC: 0 ![]() ![]() |
We recently moved MilkyWay@home onto a new server, so it might just be that the preferences were not transferred over correctly. I'll try to figure out how to get that fixed. -Eric |
Send message Joined: 9 Jul 17 Posts: 100 Credit: 16,967,906 RAC: 0 ![]() ![]() |
How does a person opt OUT of the N-body work? Just de-select "Use CPU". It is the only CPU project they have now. |
![]() Send message Joined: 19 Jul 10 Posts: 618 Credit: 19,254,980 RAC: 26 ![]() ![]() |
How does a person opt OUT of the N-body work? No, "Milkyway@home Separation" has CPU apps as well, see applications page. ![]() |
![]() ![]() Send message Joined: 24 Jan 11 Posts: 712 Credit: 551,844,780 RAC: 44,593 ![]() ![]() ![]() ![]() |
Eric, could you drop in on the thread regarding inability to get work from the server when requested for fast hosts. The consensus is that the server "feeder" mechanism isn't set up correctly. One of the Einstein scientists offered some insight on the issue that Einstein experienced and remedied with correct configuration. The thread is here: https://boinc.berkeley.edu/forum_thread.php?id=12918#91262 ![]() |
Send message Joined: 9 Jul 17 Posts: 100 Credit: 16,967,906 RAC: 0 ![]() ![]() |
No, "Milkyway@home Separation" has CPU apps as well, see applications page. You are right. I just attached a new BOINC instance, selected CPU only, and got both N-Body and Separation. It appears that something got lost in the transition. On the other hand, what happens when you select both CPU and GPU? (That is, do you get only the GPU Separations then?) I will try that later. |
![]() Send message Joined: 19 Jul 10 Posts: 618 Credit: 19,254,980 RAC: 26 ![]() ![]() |
On the other hand, what happens when you select both CPU and GPU? (That is, do you get only the GPU Separations then?) Than you get Separation for GPU and Separation and n-Body mix for the CPU. ![]() |
![]() Send message Joined: 21 Aug 18 Posts: 59 Credit: 5,350,675 RAC: 0 ![]() ![]() |
Do you remember what the option for opting out of N-body units was called? Was it "Run test applications?"? I'm still looking into the website code to resolve this. -Eric |
![]() Send message Joined: 31 Oct 10 Posts: 83 Credit: 38,632,375 RAC: 0 ![]() ![]() |
Eric, It was just one of the options offered under the user's project preferences. Perhaps Travis knows? Do you remember what the option for opting out of N-body units was called? Was it "Run test applications?"? I'm still looking into the website code to resolve this. |
![]() Send message Joined: 19 Jul 10 Posts: 618 Credit: 19,254,980 RAC: 26 ![]() ![]() |
Do you remember what the option for opting out of N-body units was called? Was it "Run test applications?"? I'm still looking into the website code to resolve this. No, it was something like: Run only the selected applications: Milkyway@home Separation: yes/no Milkyway@home N-Body Simulation: yes/no If no work for selected applications is available, accept work from other applications?: yes/no ![]() |
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