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ProfileSteveplanetary
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Message 51812 - Posted: 3 Dec 2011, 15:04:15 UTC

I have pasted 40 lines from my Event Log below. Most of them are from Einstein@Home because they illustrate the difference between E@H and M@H. I draw your attention to the lines in bold. The last two bold E@H lines indicate the resuming and completion of WU ending in 1264_1. These are followed by lines showing upload of the results from that WU. The bold M@H lines also indicate the starting or resuming of WUs, along with lines indicating their completion, but there are no lines indicating upload of results. Would somebody, perhaps a moderator or administrator, please tell us the reason for the difference? TIA

12/3/2011 2:29:41 AM | Milkyway@home | Resuming task nbody-rebuild-clr_327415_3 using milkyway_nbody version 66
12/3/2011 2:50:44 AM | Milkyway@home | Sending scheduler request: To fetch work.
12/3/2011 2:50:44 AM | Milkyway@home | Reporting 1 completed tasks, requesting new tasks for NVIDIA GPU
12/3/2011 2:50:47 AM | Milkyway@home | Scheduler request completed: got 1 new tasks
12/3/2011 2:56:51 AM | Milkyway@home | Computation for task ps_separation_82_2s_coadd_1_5836_0 finished
12/3/2011 2:56:51 AM | Einstein@Home | Restarting task p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1 using einsteinbinary_BRP4 version 100
12/3/2011 3:33:31 AM | Einstein@Home | Resuming task LATeah0069S_864.0_196250_0.0_0 using hsgamma_FGRP1 version 23
12/3/2011 3:33:31 AM | Einstein@Home | Resuming task h1_0411.95_S6GC1__1344_S6BucketA_1 using einstein_S6Bucket version 101
12/3/2011 3:33:31 AM | Einstein@Home | Resuming task LATeah0069S_864.0_453600_0.0_0 using hsgamma_FGRP1 version 23
12/3/2011 3:33:31 AM | Einstein@Home | Resuming task LATeah0069S_928.0_104650_0.0_1 using hsgamma_FGRP1 version 23
12/3/2011 3:51:38 AM | Milkyway@home | Sending scheduler request: To fetch work.
12/3/2011 3:51:38 AM | Milkyway@home | Reporting 1 completed tasks, requesting new tasks for NVIDIA GPU
12/3/2011 3:51:40 AM | Milkyway@home | Scheduler request completed: got 1 new tasks
12/3/2011 3:57:04 AM | Milkyway@home | Starting task ps_separation_82_2s_mix0_2_978029_1 using milkyway version 82
12/3/2011 4:34:05 AM | Milkyway@home | Resuming task nbody-rebuild-clr_327415_3 using milkyway_nbody version 66
12/3/2011 4:48:46 AM | Milkyway@home | Computation for task nbody-rebuild-clr_327415_3 finished
12/3/2011 4:48:46 AM | Einstein@Home | Resuming task LATeah0069S_864.0_196250_0.0_0 using hsgamma_FGRP1 version 23
12/3/2011 4:48:46 AM | Einstein@Home | Resuming task h1_0411.95_S6GC1__1344_S6BucketA_1 using einstein_S6Bucket version 101
12/3/2011 4:48:46 AM | Milkyway@home | Starting task ps_separation_82_2s_mix1_2_1014840_1 using milkyway version 88
12/3/2011 4:48:46 AM | Milkyway@home | Starting task ps_separation_82_2s_mix3_2_952042_1 using milkyway version 88
12/3/2011 4:58:09 AM | Milkyway@home | Computation for task ps_separation_82_2s_mix0_2_978029_1 finished
12/3/2011 4:58:09 AM | Einstein@Home | Restarting task p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1 using einsteinbinary_BRP4 version 100
12/3/2011 5:00:54 AM | Einstein@Home | Computation for task p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1 finished

12/3/2011 5:00:54 AM | Einstein@Home | Starting task p2030.20100913.G48.73+01.03.S.b4s0g0.00000_1704_1 using einsteinbinary_BRP4 version 100
12/3/2011 5:00:57 AM | Einstein@Home | Started upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_0
12/3/2011 5:00:57 AM | Einstein@Home | Started upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_1
12/3/2011 5:00:59 AM | Einstein@Home | Finished upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_0
12/3/2011 5:00:59 AM | Einstein@Home | Finished upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_1
12/3/2011 5:00:59 AM | Einstein@Home | Started upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_2
12/3/2011 5:00:59 AM | Einstein@Home | Started upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_3
12/3/2011 5:01:01 AM | Einstein@Home | Finished upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_2
12/3/2011 5:01:01 AM | Einstein@Home | Finished upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_3
12/3/2011 5:01:01 AM | Einstein@Home | Started upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_4
12/3/2011 5:01:01 AM | Einstein@Home | Started upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_5
12/3/2011 5:01:03 AM | Einstein@Home | Finished upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_4
12/3/2011 5:01:03 AM | Einstein@Home | Finished upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_5
12/3/2011 5:01:03 AM | Einstein@Home | Started upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_6
12/3/2011 5:01:03 AM | Einstein@Home | Started upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_7
12/3/2011 5:01:05 AM | Einstein@Home | Finished upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_6
12/3/2011 5:01:05 AM | Einstein@Home | Finished upload of p2030.20100913.G44.55+00.20.S.b5s0g0.00000_1264_1_7
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Message 51813 - Posted: 3 Dec 2011, 18:29:27 UTC - in response to Message 51812.  

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Message 51814 - Posted: 3 Dec 2011, 19:11:07 UTC - in response to Message 51813.  

So if I understood correctly, that's just the way M@H does it. I also thought I read that this is a time saving measure. But if that is the case there is still something I don't understand...doesn't it take the same length of time to send results back whether or not there is a printout?
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Message 51815 - Posted: 3 Dec 2011, 19:14:53 UTC - in response to Message 51812.  

but there are no lines indicating upload of results.


MW changed awhile back. It doesn't use a seperate command(right word?) to upload the results. It does it when it talks to the server at one time. It was done to help take some strain off of the server. I believe MW also doesn't create a seperate result file now. Since it doesn't do the uploading seperate you don't see it in Boinc.
Doesn't expecting the unexpected make the unexpected the expected?
If it makes sense, DON'T do it.
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Message 51816 - Posted: 3 Dec 2011, 19:17:52 UTC - in response to Message 51815.  

Thank you both for the explanation.

Steve
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Message 51817 - Posted: 3 Dec 2011, 19:22:44 UTC
Last modified: 3 Dec 2011, 19:24:19 UTC

I am not certain of the details of how it works but my understanding is that one of the reasons it is done this way is to reduce load on the MilkyWay server. Due to GPU tasks being processed very quickly combined with a small cache of tasks allowed means computers with one or more fast GPUs are contacting the MilkyWay server very frequently. If a separate upload is not required it reduces the number of times the server needs to be contacted by each computer and hence reduces server load.

Edit: I see banditwolf has already explained.
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Message 51818 - Posted: 3 Dec 2011, 19:31:17 UTC - in response to Message 51817.  

Thanks. That makes a lot of sense.
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