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Number crunching :
What happens near the end of a task?
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Send message Joined: 5 Aug 04 Posts: 1055 Credit: 16,517,630 RAC: 998 |
One of my work-units just uploaded its last .zip file, yet the boinc client says I have almost three hours to go. And the task is still running. What could it be doing now? After running all four trickles, is it not done? Name hadam4h_a0pg_200811_4_842_011905372_0 Workunit 11905372 Sat 09 Nov 2019 08:03:11 AM EST | climateprediction.net | Started upload of hadam4h_a0pg_200811_4_842_011905372_0_r1707431134_restart.zip Sat 09 Nov 2019 08:03:13 AM EST | climateprediction.net | Finished upload of hadam4h_a0pg_200811_4_842_011905372_0_r1707431134_restart.zip Sat 09 Nov 2019 08:03:24 AM EST | climateprediction.net | Sending scheduler request: To send trickle-up message. Sat 09 Nov 2019 08:03:24 AM EST | climateprediction.net | Not requesting tasks: "no new tasks" requested via Manager Sat 09 Nov 2019 08:03:25 AM EST | climateprediction.net | Scheduler request completed Sat 09 Nov 2019 08:03:57 AM EST | climateprediction.net | Started upload of hadam4h_a0pg_200811_4_842_011905372_0_r1707431134_4.zip Sat 09 Nov 2019 08:14:18 AM EST | climateprediction.net | Finished upload of hadam4h_a0pg_200811_4_842_011905372_0_r1707431134_4.zip |
Send message Joined: 15 May 09 Posts: 4341 Credit: 16,497,933 RAC: 6,477 |
There are a couple of other files that sometimes get created after the last zip. The restart.zip and stdaeout.zip (might not have the name of the last one exactly right. The first of the two is of the same order of magnitude as the monthly zips while the other is KB in size rather than MB. The restart files in some cases are used to seed yet more work. |
Send message Joined: 5 Aug 04 Posts: 1055 Credit: 16,517,630 RAC: 998 |
There are a couple of other files that sometimes get created after the last zip. The restart.zip and stdaeout.zip (might not have the name of the last one exactly right. The first of the two is of the same order of magnitude as the monthly zips while the other is KB in size rather than MB. There was one more file: Sat 09 Nov 2019 09:18:28 AM EST | climateprediction.net | Computation for task hadam4h_a0pg_200811_4_842_011905372_0 finished Sat 09 Nov 2019 09:18:28 AM EST | climateprediction.net | Resuming task hadam4h_a1i3_201211_4_842_011906403_0 using hadam4h version 852 in slot 1 Sat 09 Nov 2019 09:18:31 AM EST | climateprediction.net | Started upload of hadam4h_a0pg_200811_4_842_011905372_0_r1707431134_out.zip Sat 09 Nov 2019 09:18:36 AM EST | climateprediction.net | Finished upload of hadam4h_a0pg_200811_4_842_011905372_0_r1707431134_out.zip Sat 09 Nov 2019 09:18:38 AM EST | climateprediction.net | Sending scheduler request: To report completed tasks. Notice how long the _4.zip file took to upload? Sat 09 Nov 2019 08:03:57 AM EST | climateprediction.net | Started upload of hadam4h_a0pg_200811_4_842_011905372_0_r1707431134_4.zip Sat 09 Nov 2019 08:14:18 AM EST | climateprediction.net | Finished upload of hadam4h_a0pg_200811_4_842_011905372_0_r1707431134_4.zip A bit over 10 minutes. Since my Internet connection is about 75 Megabits/second, I infer that either the Internet backbone speeds are clogged or the CPDN server is none too speedy. I could go about 40x faster than that. Date Download Upload IP Address Test Server Export All Results 11/9/2019 9:32:03 AM 82.44 Mbps 36.14 Mbps 100.35.165.125 New York City, NY 10/4/2019 7:45:44 AM 83.98 Mbps 87.33 Mbps 100.35.165.125 New York City, NY 10/1/2019 5:17:42 PM 83.84 Mbps 66.32 Mbps 100.35.165.125 Seattle, WA |
Send message Joined: 7 Aug 04 Posts: 2167 Credit: 64,473,009 RAC: 3,688 |
The other thing that might cause this is that while the model may upload the monthly file right after the last day of the month, the model continues on for another day before terminating itself. If you have about 3 hours between checkpoints, that would be about right. You can check which model day the model run is on by opening a terminal window and going into the "boincdir"/projects/climateprediction.net/hadam4hrestofmodelname directory and typing tail -f stdout_mon.txt It lists the model timesteps, the model date, model time, cumulative time, average sec/TS for the whole run so far, and individual sec/TS for each forecast timestep. |
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