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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lihaibo
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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。
针对这种情况,本人在自己电脑上测试了下,BOINC客户端参数设置如图1。具体测试情况如下:
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
2)对其中4个任务暂停,CPU利用率会降到50%,见图3
3)如果对项目暂停,本人的机器上是可以把ICT的进程停下来的,此时利用率也降下来了,见图4
如果把boinc客户端上的任务先停掉,过一段时间再继续,根据boinc服务器端的设置,客户端会再拿到8个任务,这个时候把所有任务暂停,会遇到ICT的进程不会立刻停止,待过一段时间后ICT的进程就停止了,见图5图6
最后建议:为了防止CPU利用率出现100%的情况,可以在boinc客户端选项里把最多可使用的CPU利用率设置低一些,比方说50%。

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.

顶!!!!!!


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