Tips: experiment about ICT task cannot be stopped.
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Message boards : News : Tips: experiment about ICT task cannot be stopped.

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Message 1123 - Posted: 7 Jun 2013, 14:16:57 UTC
Last modified: 8 Jun 2013, 1:16:21 UTC

近期有志愿者反映ICT的作业在windows上出现无法手动停止的问题,这个问题出现在ICT_treeThreader_1.21_windows_intelx86(2nd Generation)版本,具体现象是在BOINC里手动暂停ICT的任务,但是windows的任务管理器里面还有,而且是满负荷运算,直到把当前任务完全计算完才停止。
1)启动CAS@home,更新任务,得到8个ICT任务,版本是ICT_treeThreader_1.21_windows_intelx86(2nd Generation),开始运行后,CPU利用率为100%,见图2

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%.

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Message 1135 - Posted: 26 Jun 2013, 11:04:24 UTC - in response to Message 1123.


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Message boards : News : Tips: experiment about ICT task cannot be stopped.