LHC@home

I've been getting the following error all morning. I don't understand it completely, but it looks like it's trying to download a result that I have already received and have as of now completed and uploaded the finished files for. Here's my log information:


LHC@home - 2005-03-02 10:17:01 - Requesting 8525 seconds of work
LHC@home - 2005-03-02 10:17:01 - Requesting 8525 seconds of work
LHC@home - 2005-03-02 10:17:08 - Scheduler RPC to http://lhcathome-sched1.cern.ch/scheduler/cgi succeeded
LHC@home - 2005-03-02 10:17:08 - Already have result v64lhc92-37s8_10575_1_sixvf_1085_5
LHC@home - 2005-03-02 10:17:08 - Got ack for result (null), can't find
LHC@home - 2005-03-02 10:17:08 - No work from project
LHC@home - 2005-03-02 10:17:08 - Deferring communication with project for 48 minutes and 14 seconds


I can confirm that the result mentioned above in the log entries is the wu that I just finished computing and returned to the server. However, I can no longer download any new work or report the finished wus from my BOINC client. I can't seem to find any information on this, but think I vaguely remember something similar to this happening on another project (maybe PP@H?).

Thanks for your help.

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www.clintcollins.org - spouting off at the speed of site

I just wanted to add that this isn't an isolated incident -- I'm getting a similar message:

LHC@home - 2005-03-02 15:42:37 - Sending request to scheduler: http://lhcathome-sched1.cern.ch/scheduler/cgi
LHC@home - 2005-03-02 15:42:41 - Scheduler RPC to http://lhcathome-sched1.cern.ch/scheduler/cgi succeeded
LHC@home - 2005-03-02 15:42:41 - Already have result v64boince6ib1-23s14_16660_1_sixvf_7724_3
LHC@home - 2005-03-02 15:42:41 - Got ack for result (null), can't find

I have seven WUs on my machine, two finished, one in progress, and the rest ready to run.

One WU finished earlier this afternoon and uploaded ok:

LHC@home - 2005-03-02 12:32:41 - Computation for result v64lhc89-51s12_14530_1_sixvf_5495 finished
LHC@home - 2005-03-02 12:32:42 - Started upload of v64lhc89-51s12_14530_1_sixvf_5495_2_0
LHC@home - 2005-03-02 12:32:48 - Throughput 16980 bytes/sec
LHC@home - 2005-03-02 12:32:48 - Finished upload of v64lhc89-51s12_14530_1_sixvf_5495_2_0

I'm on a Windows machine, dual processor, not overclocked.

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<img src="http://boinc.mundayweb.com/one/stats.php?userID=497&amp;trans=off">

I had this problem a while back, and I thought I was the only one. Someone is also having it on Predictor.

old thread:
http://lhcathome.cern.ch/forum_thread.php?id=1176

Predictor thread:
http://predictor.scripps.edu/forum_thread.php?id=1335

The cure (for me, anyway) was to detach/reattach.

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@Genes
> The cure (for me, anyway) was to detach/reattach.

Thanks for your help, but this time the detach/reattach didn't work. However, it did change my status because now I'm getting signature verification errors on the sixtrack client executable file. I'm going to dig around a little bit for an answer and I'll update if I find a solution.

-EDIT-
I've looked around and didn't notice anything that seemed helpful on the checksum errors... Detached and reattached twice now with the same result - checksum error on the download of the sixtrack executable. I'm getting the following when the client tries to reattach to the server:

LHC@home - 2005-03-03 02:33:28 - Requesting 8527 seconds of work
LHC@home - 2005-03-03 02:33:32 - Sending request to scheduler: http://lhcathome-sched1.cern.ch/scheduler/cgi
LHC@home - 2005-03-03 02:33:35 - Scheduler RPC to http://lhcathome-sched1.cern.ch/scheduler/cgi succeeded
LHC@home - 2005-03-03 02:33:35 - Already have result v64lhc92-37s8_10575_1_sixvf_1085_5
LHC@home - 2005-03-03 02:33:35 - Got ack for result (null), can't find
LHC@home - 2005-03-03 02:33:35 - No work from project
LHC@home - 2005-03-03 02:33:35 - Deferring communication with project for 1 minutes and 0 seconds
LHC@home - 2005-03-03 02:33:35 - Started download of sixtrack_4.64_windows_intelx86.exe
LHC@home - 2005-03-03 02:33:50 - Finished download of sixtrack_4.64_windows_intelx86.exe
LHC@home - 2005-03-03 02:33:50 - Throughput 188022 bytes/sec
LHC@home - 2005-03-03 02:33:50 - signature verification error for sixtrack_4.64_windows_intelx86.exe
LHC@home - 2005-03-03 02:33:50 - Checksum or signature error for sixtrack_4.64_windows_intelx86.exe


Any help is appreciated!
-EDIT-

Regards,
Clint

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www.clintcollins.org - spouting off at the speed of site

3-3-2005 16:09:25|LHC@home|Already have result v64boince6ib1-57s8_10630_1_sixvf_9030_3
3-3-2005 16:09:57|LHC@home|Can't delete project directory: -110
3-3-2005 16:09:54|LHC@home|Couldn't delete file projects\lhcathome.cern.ch\v64boince6ib1-57s8_10630_1_sixvf_9030.zip
i try to detach but i got this message

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This is obviously not the best solution, but it worked in that I was able to d/l fresh WUs. I deleted the file it said it already had the result for, then closed and reopened BOINC. I updated, and received new WUs. Hate to possibly muck up another result (though isn't that why BOINC is redundant?) but this way I at least crunched several more WUs that I wouldn't have gotten otherwise.

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<img src="http://boinc.mundayweb.com/one/stats.php?userID=497&amp;trans=off">

My error has evolved...

While I was out my client reconnected to the server and apparently downloaded the executable correctly without the signature verification error. However, I now cannot download the logo_back_1.01_.tga file correctly. I'm getting the "wrong size" (checksum?) error, so I suspended network activity to keep from flooding out a bunch of worthless d/l requests for the file which was repeating over and over. Here's the new errors from my log:

LHC@home - 2005-03-03 23:15:47 - Started download of logo_back_1.01_.tga
LHC@home - 2005-03-03 23:15:54 - Finished download of logo_back_1.01_.tga
LHC@home - 2005-03-03 23:15:54 - Throughput 32150 bytes/sec
LHC@home - 2005-03-03 23:15:54 - Giving up on download of logo_back_1.01_.tga: Downloaded file had wrong size: expected 2691072, got 210483
LHC@home - 2005-03-03 23:15:54 - Started download of logo_back_1.01_.tga
LHC@home - 2005-03-03 23:16:02 - Finished download of logo_back_1.01_.tga
LHC@home - 2005-03-03 23:16:02 - Throughput 29032 bytes/sec
LHC@home - 2005-03-03 23:16:02 - Giving up on download of logo_back_1.01_.tga: Downloaded file had wrong size: expected 2691072, got 210483
LHC@home - 2005-03-03 23:16:02 - Started download of logo_back_1.01_.tga
--- - 2005-03-03 23:16:04 - Suspending network activity - user request


This pattern repeated for quite a long time until I got in and shut down communication. Any help on this would be appreciated. I haven't been able to crunch LHC workunits for over a day now.

Regards,
Clint

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www.clintcollins.org - spouting off at the speed of site

> Any help is appreciated!
> -EDIT-

Clint, try this
-detach from LHC
-exit the boinc client.

-go into the boinc\\projects folder
if still present, delete the full lhcathome.cern.ch

-go into the boinc\\slots folder
LHC attached only--> delete all 0,1,2,3,4

not only LHC Attached, look into 0,1,2,3,4 and delete all entries related to LHC.

-now restart the boinc client, it should be empty now and attach to the project.

good luck

> Clint, try this

Ric,

That seems to have done the trick - thanks for the advice!

Regards,
Clint

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www.clintcollins.org - spouting off at the speed of site