Computational Error

Forums › Cruncher's Corner

Arvid
Arvid
Joined: 6 Apr 05
Posts: 1
Credit: 4510
RAC: 0
17 Apr 2010 22:29:40 UTC
Topic 194878
(moderation:
    )

    Has anyone else had their work units end in a computational error half way through?

    Jord
    Joined: 26 Jan 05
    Posts: 2952
    Credit: 5779100
    RAC: 0

    Computational Error

    17 Apr 2010 22:54:46 UTC
    Message 97729
    (moderation:
      )

      I see you have Input file problems with errors -119 and -120, which are problems with the encryption and md5 signatures on the actual program files and tasks.

      You may have a corrupt public key. Try to reset your project to fix that.
      If these problems persist, try to uninstall BOINC and reinstall it to another drive or partition, then run an extensive chkdsk scan on your hard drive to see if it has sector problems. (See the MS knowledgebase for more help on chkdsk)

      Richard Schumacher
      Richard Schumacher
      Joined: 8 Aug 06
      Posts: 32
      Credit: 14212314
      RAC: 0

      Yes, I had this: Sun Apr

      18 Apr 2010 16:21:30 UTC
      Message 97730
      (moderation:
        )

        Yes, I had this:

        Sun Apr 18 10:20:45 2010|Einstein@Home|Unrecoverable error for result h1_0453.20_S5R4__74_S5GCEa_1 (process exited with code 4 (0x4))

        When I looked at it this AM BOINC had halted with no project or job info displayed. After re-starting BOINC everything looks normal again...

        Jord
        Joined: 26 Jan 05
        Posts: 2952
        Credit: 5779100
        RAC: 0

        RE: Sun Apr 18 10:20:45

        20 Apr 2010 5:40:48 UTC
        Message 97731 in response to message 97730
        (moderation:
          )

          Quote:
          Sun Apr 18 10:20:45 2010|Einstein@Home|Unrecoverable error for result h1_0453.20_S5R4__74_S5GCEa_1 (process exited with code 4 (0x4))


          Process exited with code 4 says:

          Quote:

          With thanks to Bernd Machenschalk of Einstein for this explanation.

          In general there are two reasons for an exit code 4:

          - a signal 4 (illegal instruction) happens when the application tries to execute commands the CPU isn't capable of (e.g. AltiVec code running on a G3 Mac)

          - an error in the command-line that is passed form the Client to the application. Typically something went wrong in the communication of the Core Client, talking to either the server, the application or the file-system of the host.


          I'll ask Bernd to pass by.

          Bernd Machenschalk
          Bernd Machenschalk
          Moderator
          Administrator
          Joined: 15 Oct 04
          Posts: 4275
          Credit: 245506915
          RAC: 11154

          It is an error in the

          20 Apr 2010 7:10:31 UTC
          Message 97732
          (moderation:
            )

            It is an error in the command-line parsing that arises from missing or unaccessible files:

            2010-04-19 21:53:26.1182 (13718) [CRITICAL]: Failed to open 'skygrid_0460Hz_S5GC.dat' for reading: 2: No such file or directory
2010-04-19 21:53:26.1183 (13718) [debug]: ERROR: Couldn't open 'skygrid_0460Hz_S5GC.dat'
2010-04-19 21:53:26.1184 (13718) [CRITICAL]: Failed to open 'earth' for reading: 2: No such file or directory
2010-04-19 21:53:26.1184 (13718) [debug]: ERROR: Couldn't open 'earth'
2010-04-19 21:53:26.1185 (13718) [CRITICAL]: Failed to open 'sun' for reading: 2: No such file or directory
...
2010-04-19 21:53:26.1196 (13718) [CRITICAL]: ERROR: error 4 in command-line parsing

            As this apparently doesn't happen at the very beginning (nonzero CPU time), it looks like the tasks was stooped (suspended), then something happened that deleted the files and when the App was restarted, it couldn't find the files anymore. Apparently whatever deleted the data files also deleted the stderr output of the first application start. Did you do a restore from a backup there? Check your filesystem. If that's ok, a project reset should help.

            [edit]The files that were deleted is probably the 'slot' directory, not the actual data files in the project directory. You are using a pretty old BOINC Core Client (5.2.13). I remember that there have been some Clients that had a problem with managing theirs slot directories. Maybe upgrading the Client would help[/edit]

            BM

            BM

            Odysseus
            Odysseus
            Joined: 17 Dec 05
            Posts: 372
            Credit: 19690126
            RAC: 2586

            Two of my G4s have now done

            22 Apr 2010 3:33:09 UTC
            Message 97733 in response to message 97732
            (moderation:
              )

              Two of my G4s have now done exactly the same: see the output at h1_0538.35_S5R4__161_S5GCEa_1 & h1_0447.25_S5R4__60_S5GCEa_1. The other two are still crunching.

              P.S. Looks like they both ran benchmarks about the same time. All clients set to keep apps in memory. One of the above tasks ran on a file-server machine that hasn’t been restarted for months.

              Richard Schumacher
              Richard Schumacher
              Joined: 8 Aug 06
              Posts: 32
              Credit: 14212314
              RAC: 0

              I installed 6.6.36, which

              22 Apr 2010 5:33:28 UTC
              Message 97734
              (moderation:
                )

                I installed 6.6.36, which appears to be the most recent one that supports OSX 10.3.9. After starting it fetched and completed 14 (the daily quota) very short jobs, with results like this:

                [...]
                Thu Apr 22 00:06:07 2010 Einstein@Home Started download of l1_0454.05_S5R4
                Thu Apr 22 00:06:09 2010 Einstein@Home Finished download of h1_0454.05_S5R4
                Thu Apr 22 00:06:09 2010 Einstein@Home Started download of l1_0454.05_S5R7
                Thu Apr 22 00:06:32 2010 Einstein@Home Finished download of l1_0454.05_S5R4
                Thu Apr 22 00:06:33 2010 Einstein@Home Finished download of l1_0454.05_S5R7
                Thu Apr 22 00:06:34 2010 Einstein@Home Starting h1_0453.75_S5R4__180_S5GCEa_0
                Thu Apr 22 00:06:44 2010 Einstein@Home Starting task h1_0453.75_S5R4__180_S5GCEa_0 using einstein_S5GCE version 701
                Thu Apr 22 00:06:53 2010 Einstein@Home Computation for task h1_0453.75_S5R4__180_S5GCEa_0 finished
                Thu Apr 22 00:06:53 2010 Einstein@Home Output file h1_0453.75_S5R4__180_S5GCEa_0_0 for task h1_0453.75_S5R4__180_S5GCEa_0 absent
                Thu Apr 22 00:07:57 2010 Einstein@Home Sending scheduler request: To fetch work.
                Thu Apr 22 00:07:57 2010 Einstein@Home Reporting 1 completed tasks, requesting new tasks
                Thu Apr 22 00:08:01 2010 Einstein@Home Scheduler request completed: got 0 new tasks
                Thu Apr 22 00:08:01 2010 Einstein@Home Message from server: No work sent
                Thu Apr 22 00:08:01 2010 Einstein@Home Message from server: (reached daily quota of 14 tasks)
                Thu Apr 22 00:08:01 2010 Einstein@Home Message from server: Project has no jobs available

                Gundolf Jahn
                Gundolf Jahn
                Joined: 1 Mar 05
                Posts: 1079
                Credit: 341280
                RAC: 0

                RE: Thu Apr 22 00:06:53

                22 Apr 2010 7:44:09 UTC
                Message 97735 in response to message 97734
                (moderation:
                  )

                  Quote:
                  Thu Apr 22 00:06:53 2010 Einstein@Home Computation for task h1_0453.75_S5R4__180_S5GCEa_0 finished
                  Thu Apr 22 00:06:53 2010 Einstein@Home Output file h1_0453.75_S5R4__180_S5GCEa_0_0 for task h1_0453.75_S5R4__180_S5GCEa_0 absent


                  The tasks I checked all got "process got signal 10" whatever that means :-)

                  Gruß,
                  Gundolf

                  Computer sind nicht alles im Leben. (Kleiner Scherz)

                  Bernd Machenschalk
                  Bernd Machenschalk
                  Moderator
                  Administrator
                  Joined: 15 Oct 04
                  Posts: 4275
                  Credit: 245506915
                  RAC: 11154

                  RE: The tasks I checked all

                  22 Apr 2010 13:04:44 UTC
                  Message 97736 in response to message 97735
                  (moderation:
                    )

                    Quote:
                    The tasks I checked all got "process got signal 10" whatever that means


                    It means "Bus error". Equivalent of Windows "General access violation".

                    Looks like Task 171772121 was the last that was started at all, from then on all tasks errored out immediately.

                    FWIW: I'm running 6.6.29 on a G3 w. Mac OS 10.3.9 without apparent problems.

                    BM

                    BM

                    Akos Fekete
                    Akos Fekete
                    Joined: 13 Nov 05
                    Posts: 561
                    Credit: 4527270
                    RAC: 0

                    I got also some computational

                    24 Apr 2010 19:12:20 UTC
                    Message 97737
                    (moderation:
                      )

                      I got also some computational errors with the S5GCE application on more than five computers.
                      ( einstein_S5GCE_3.04_windows_intelx86__S5GCESSE2.exe )

                      I found always this error in the output:

                      - Unhandled Exception Record -
                      Reason: Breakpoint Encountered (0x80000003) at address 0x7C90120E

                      Jord
                      Joined: 26 Jan 05
                      Posts: 2952
                      Credit: 5779100
                      RAC: 0

                      RE: - Unhandled Exception

                      24 Apr 2010 22:05:39 UTC
                      Message 97738 in response to message 97737
                      (moderation:
                        )

                        Quote:
                        - Unhandled Exception Record -
                        Reason: Breakpoint Encountered (0x80000003) at address 0x7C90120E


                        Like this one?

                        It starts with:

                        Quote:


                        Maximum elapsed time exceeded

                        Maximum elapsed time exceeded is an error you will get when the CPU or GPU exceeds the amount of time specified in the n amount given to the task.

                        Have you been manually editing the number? ;-)

                        The Breakpoint Encountered message is just a consequence to that message. You'll also see it with the other one, "Maximum disk space exceeded".

                        Comment viewing options

                        Select your preferred way to display the comments and click "Save settings" to activate your changes.

                        Forums › Cruncher's Corner