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Thread: CAS@home News

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    CAS@home News

    Tips: experiment about ICT task cannot be stopped.


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    AMDave's Avatar
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    Full english text for your convenience:

    Recently, some volunteers reflect that the ICT tasks cannot be stopped manually in the windows machines, and the problem occurs in the version of ICT_treeThreader_1.21_windows_intelx86(2nd Generation. Specific phenomenon is described as follows. When the ICT task is stopped manually in BOINC client, it also exists in the task manager and full load, and it cannot be stopped until the task is totally calculated.
    To solve the problem, I test it in my own machine; the parameter of BOINC clients is as picture 1. The detailed situation is as follows:
    1) Start the CAS@home project, and refresh the task, then the client will get eight ICT tasks, and the version is ICT_treeThreader_1.21_windows_intelx86(2nd Generation). Then run the task, the CPU usage ratio rises to 100%, as shown in picture 2;
    2) If suspending four tasks, the CPU usage ratio reduces to 50%, as shown in picture 3;
    3) If suspending the whole project, the ICT progress can be killed in my machine, as a result, the CPU ratio comes down, as picture 4.
    If stopping the task in the BOINC client, and then continue it, according to the configuration in the BOINC server, the client will get eight more tasks. The ICT process cannot be stopped immediately until after a while if suspending all tasks, as shown in picture 5, picture 6.
    Final recommendations: To avoid the situation of CPU usage ratio rising to 100%, it can lower the parameter of most used CPU in BOINC client to a low value, for example 50%.
    Last edited by AMDave; 06-08-2013 at 09:24 AM. Reason: added links to the images
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  3. #3
    AMDave's Avatar
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    summed up:
    1 - once started, the client app thread is uncontrolled until finished
    2 - thus - both manual Suspend and Resume and automatic task switching is broken

    YMMV but it's not likely, until this is fixed.
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