LINUX Beta Test App 4.17 available

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Bernd Machenschalk
Bernd Machenschalk
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29 Jul 2006 13:06:10 UTC
Topic 13396
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    A new Beta Test App is available on our usual Beta Test Page.

    This has some changes to the code used in the 4.16 App that apparently further speed it up, though I'm still puzzled why. These changes are only suitable for the SSE code, the generic code (on non-SSE CPUs) probably won't show an improvement over the 4.16 App.

    I've seen very large variations regarding the speed compared to the 4.01 App depending on the CPU type, so if you report speed values here, please also report the CPU.

    Happy tessting!

    BM

    BM

    Bernd Machenschalk
    Bernd Machenschalk
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    LINUX Beta Test App 4.17 available

    29 Jul 2006 14:07:22 UTC
    Message 2961
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      Leave them. Overwrite the app_info.xml with the new one. The tasks already assigned to 4.16 will be finished with that, new work should be assigned to the 4.17.

      BM

      BM

      Bernd Machenschalk
      Bernd Machenschalk
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      What CPUs are these? I've

      30 Jul 2006 7:40:58 UTC
      Message 2962
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        What CPUs are these?

        I've seen a bit more speedup, but I mostly tested it on Xeon and Pentium-M ...

        BM

        BM

        Bernd Machenschalk
        Bernd Machenschalk
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        I'm still a bit puzzled. The

        3 Aug 2006 15:21:12 UTC
        Message 2963
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          I'm still a bit puzzled. The changes I made from 4.16 to 4.17 were some that I would have expected to slow things down. However on my Xeons they sped things up quite noticably. My current guess is that CPUs with large caches will rather benefit from these changes, while they slowed down things on all others (though not much).

          Does this sound reasonable?

          BM

          BM

          Bernd Machenschalk
          Bernd Machenschalk
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          RE: I have a 512K L2 cache

          3 Aug 2006 19:25:00 UTC
          Message 2964
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            Quote:
            I have a 512K L2 cache on my Pentium II and 4.17 was slower than 4.16 and also 4.01. What I saw was that 4.17 used very little of my 320 MB RAM, which means it did not cache disk.SuSE Linux 9.3.

            I payed most attention to the SSE code, the "generic" on hasn't changed much, so my statement about cache referrs to the SSE code only.

            The Einstein@Home Application doesn't use much memory at all, just a few MB, plus the stuff that the code for the OS it's running on needs (code, libraries etc.). It also doesn't write much. It'ts totally CPU bound.

            BM

            BM

            Bernd Machenschalk
            Bernd Machenschalk
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            RE: However, quite some

            11 Aug 2006 12:41:35 UTC
            Message 2965
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              Quote:
              However, quite some "small x"-es on this result.


              Not so many. We have something like 50.000 templates in the long WUs, so less than 50 "small x" ist still < 0.1%. This result has 38.

              BM

              BM

              Bernd Machenschalk
              Bernd Machenschalk
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              RE: Up to August 11

              13 Aug 2006 7:56:30 UTC
              Message 2966
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                Quote:
                Up to August 11 stderr.txt was not empty, now it is on all results. Maybe the program has gone in vacation...Cheers.


                Have you changed something at the BOINC Client side, e.g. upgraded it or attached to a new project then? It may also be that due to some change in permissions the Client is not able to store the stderr output of the App anymore.

                BM

                BM

                Bernd Machenschalk
                Bernd Machenschalk
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                For people who think the 4.16

                13 Aug 2006 11:28:11 UTC
                Message 2967
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                  For people who think the 4.16 runs faster on their machines than the 4.17 App I put a link to the 4.16 on our Power User Apps page. Note that this is the original Beta Test package, so if you intall the app_info.xml, all work already assigned to the 4.17 will end up with a client error.

                  BM

                  BM

                  Bernd Machenschalk
                  Bernd Machenschalk
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                  RE: RE: Well, so far I

                  14 Aug 2006 11:11:32 UTC
                  Message 2968
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                    Quote:
                    Quote:

                    Well, so far I was starting the 5.4.9 client first with "run_client" and then "run_manager". Then I read from the BOINC home page that the manager starts the client if it is not running and I started giving the "run_manager" command only. Maybe this is the reason. I shall go back to the old way and see what happens.
                    Tullio

                    I confirm this guess. Starting the BOINC client first and the BOINC manager second gives back the stderr.txt text.


                    Might be worth a bug report to BOINC

                    BM

                    BM

                    Bernd Machenschalk
                    Bernd Machenschalk
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                    Bruce has made the Beta Apps

                    14 Aug 2006 20:48:43 UTC
                    Message 2969
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                      Bruce has made the Beta Apps 4.17 and 4.24 official. You can now remove the app_info.xml and restart the client to switch back to the official, auto-update path.

                      Thanks a lot for participating in this Beta Test.

                      BM

                      BM

                      Bernd Machenschalk
                      Bernd Machenschalk
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                      Are you using the Beta Test

                      17 Aug 2006 8:14:42 UTC
                      Message 2970
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                        Are you using the Beta Test package or did the Client download the official App?

                        Try the Beta Test package. Check the md5 sum before installing. Check permissions of the BOINC directory and subdirectories.

                        The stderr of your 4.16 results is empty. Try to start the Client manually before the Manager.

                        BM

                        BM

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