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Thread: MilkyWay@home News

  1. #1
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    MilkyWay@home News

    Separation updated to 1.00
    I've updated all of the separation applications to 1.00. For changes people might care about,
    • - The old CAL version is gone; it's replaced with the OpenCL application. On AMD/ATI GPUs (older than 79xx) it is using some hackery to use the same IL kernel as before so it should be as fast. However this also means the Radeon 38xx cards aren't supported with new stuff. - Radeon 79xx stuff should work - The occasional validate errors from empty / truncated stderr should stop - AVX will be used if available on Linux and Windows (64 bit only for Windows) - I've increased the default GPU target frequency so GPU stuff should make things less laggy on average. You can now also configure this with the web preferences now so you don't need to use app_info stuff if you want to play with that. - Partial workaround with high CPU usage with recent Nvidia drivers.*


    As usual post problems you run into here. * It should cut down on the CPU usage a bit while not sacrificing too much. I would recommend not using it unless you are very unhappy with the CPU usage on Nvidia. There are options to change the polling mode if you want to lower the CPU usage further while not slowing it down. (--gpu-wait-factor (default = 0.75) and --gpu-polling-mode (default = - 2) work similarly to how they did with the old CAL one, but slightly different). With the default of -2 it will use mode -1 unless it is an Nvidia driver newer than the one that introduced the high CPU issue, where it will use mode 0. Mode -1 uses the correct waiting method, mode 0 use the correct waiting method with an initial sleep based on time estimates, and modes > 0 are a polling period in milliseconds. The wait factor is a sort of correction of the time estimate used for the initial wait. The default is 0.75, to wait for 75% of the estimated time before trying to poll.

    More...

  2. #2
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    Is it just me or didn't you receive any of the new OpenCL WU either?
    I just detached and re-attached in the hope it will help.
    The machine is using BOINC 7.0.8, looks like it needs Cat 12.1 as well


  3. #3
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    Quote Originally Posted by Dirk Broer View Post
    looks like it needs Cat 12.1 as well
    Nope, that did not work either. Oh! The wonders of OpenCL and Bèta testing...


  4. #4
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    I think I will let you guys work out some of the bugs on these projects and hope it goes smoother for future gpu based projects. I gave up on poem for now as it seems to require to much cpu to feed it at this point compared to other projects.



  5. #5
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    Quote Originally Posted by Dirk Broer View Post
    Nope, that did not work either. Oh! The wonders of OpenCL and Bèta testing...
    Solved:
    Manually dowloaded the application from arkayn,
    upgraded BOINC to 7.0.15 (under Win8-64, the cutting edge of progress)
    and used an app_info.xml

    Runs pretty good for an OpenCL application!
    Bad for my Moo! score perhaps, and for Collatz, but these projects have less priority at the moment.


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