0 个投票

Hi, I have difficulty in outputting information to matlab command window when multi-task are running. Specifically I am using a independent multi-task parallel mode. Below is the way I created my multi-task within one job
parallel.defaultClusterProfile('local');
cluster = parcluster();
job = createJob(cluster);
createTask(job, funcHandles, numArray, args,'CaptureDiary',true);
submit(job);
wait(job);
results = fetchOutputs(job);
Within each funcHandle, I want to output some text during the execution. It is said that after matlab 2012b, this functionality is enabled through parallel.Task.Diary property. However, I can neither get nor set such property during the running of the task.There is completely no examples or explanation on how to access this property at all.
I know that I can output the info into a log file. But I still prefer to display something in the command window.
Can anyone help me? Thank you.

请先登录，再回答此问题。

 采纳的回答

Edric Ellis
Edric Ellis 2014-6-2

1 个投票

The task "diary" property is updated automatically when your task function would emit text to the command window. For example:
c = parcluster('local');
j = createJob(c);
t = createTask(j, @disp, 0, {magic(4)}, 'CaptureDiary', true);
submit(j);
wait(j);
t.Diary

5 个评论
显示 3更早的评论 隐藏 3更早的评论

Xinyi Shen
Xinyi Shen 2014-6-2
Yes. But is there a way to output the text to the command window during the execution of the task rather than displaying all after the task is finished?
Thank you.
Edric Ellis
Edric Ellis 2014-6-2
Yes, simply invoke "t.Diary" while the task is executing. (This is mentioned in the release notes for R2012b).
Xinyi Shen
Xinyi Shen 2014-6-2
Thank you.
But in your code, t.Diary appears after wait(j), which means the diary will be output to the command window after the task is done. However, I need the command window output during the execution of the task.Is there a way?
Edric Ellis
Edric Ellis 2014-6-3
You can execute "t.Diary" at any time - including before "wait(j)". So, you might do:
...
submit(j);
while ~strcmp(j.State, 'finished')
disp(t.Diary);
pause(5);
end
Of course, that will display the entire diary each time around the "while" loop. You might want to do something more sophisticated like checking the diary to display only the new lines.
Xinyi Shen
Xinyi Shen 2014-6-8
编辑：Xinyi Shen 2014-6-8
That works. Thank you.

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Startup and Shutdown 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by