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Posts by Michael McMullen

1) Message boards : News : New Runs for MilkyWay@home Nbody Simulations (07/29/2020) (Message 70011)
Posted 3 Aug 2020 by Michael McMullen
Post:
Also when Nbody gets buffed up, ability to run it on the gpu would be good, as a lot of machines these days have Radeon VII, Titan V, etc. that can really chew through double precision tasks and have a lot of memory, not being partly crippled for compute tasks like purely gameing cards. They don't do so well on the separations as they might as each only takes 12 to 20 sec and a fair amount of time is spent on loading and unloading them in the gpu, and the number sent gets used up fast and there is no work available for a while. Probably would not work well for Nbody if quad or greater precision is needed.
2) Message boards : News : New Runs for MilkyWay@home Nbody Simulations (07/29/2020) (Message 70010)
Posted 3 Aug 2020 by Michael McMullen
Post:
Got a hang on de_nbody_07_29_2020_v176_40k_data_3_1596028202__76964_1
stops making progress for hours (task should be 5 to 10 minutes). Was not problem on previous groups of Nbody. After short suspend runs to completion in reasonable time. Best if these sorts of things errored out rather than tie up all Nbodys until human intervention.
3) Message boards : News : New Runs for MilkyWay@home N-Body (1/15/2020) (Message 69436)
Posted 17 Jan 2020 by Michael McMullen
Post:
Any different coding than prior N-body runs? My computer tends to freeze n-body runs run on the cpu from time to time and not progress on them.
4) Message boards : News : New Runs for MilkyWay@home N-Body (1/15/2020) (Message 69435)
Posted 17 Jan 2020 by Michael McMullen
Post:
Any different coding than prior N-body runs? My computer tends to freeze n-body runs run on the cpu from time to time and not progress on them.
5) Message boards : News : New nbody runs July 2 (Message 67660)
Posted 8 Jul 2018 by Michael McMullen
Post:
Turned on Nbodys again. They still cease making progress after a while, but keep the processors. Turned off Nbodys and aborted those in my que.
6) Message boards : News : Validation Inconclusive Errors (Message 67013)
Posted 29 Jan 2018 by Michael McMullen
Post:
I had chronic somewhat intermittent problems with Nbody running on my 8 cores. They would stop making progress and computing, but still tie up the core and run time until suspended and resumed later, when the problem would usually run to completion, sometimes validate, sometimes not. I recently stopped running Nbody problems as a result. Too much babysitting.




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