On Fri, Oct 23, 2009 at 12:35 PM, Jaroslav Hajek <high...@gmail.com> wrote:
> On Fri, Oct 23, 2009 at 12:30 PM, Michael Creel <michael.cr...@uab.es> wrote:
>> On Fri, Oct 23, 2009 at 12:28 PM, Jaroslav Hajek <high...@gmail.com> wrote:
>>> On Fri, Oct 23, 2009 at 12:26 PM, Michael Creel <michael.cr...@uab.es>
>>> wrote:
>>>> On Fri, Oct 23, 2009 at 12:19 PM, Jaroslav Hajek <high...@gmail.com> wrote:
>>>>> On Fri, Oct 23, 2009 at 12:09 PM, Michael Creel <michael.cr...@uab.es>
>>>>> wrote:
>>>>>> On Fri, Oct 23, 2009 at 12:00 PM, Jaroslav Hajek <high...@gmail.com>
>>>>>> wrote:
>>>>>>> On Fri, Oct 23, 2009 at 11:52 AM, Michael Creel <michael.cr...@uab.es>
>>>>>>> wrote:
>>>>>>>> On Fri, Oct 23, 2009 at 11:23 AM, Jaroslav Hajek <high...@gmail.com>
>>>>>>>> wrote:
>>>>>>>>> On Fri, Oct 23, 2009 at 11:21 AM, Michael Creel
>>>>>>>>> <michael.cr...@uab.es> wrote:
>>>>>>>>>> On Fri, Oct 23, 2009 at 10:57 AM, Jaroslav Hajek <high...@gmail.com>
>>>>>>>>>> wrote:
>>>>>>>>>>>
>>>>>>>>>>> parcellfun works like cellfun, so this usage is incorrect. see help
>>>>>>>>>>> for cellfun.
>>>>>>>>>>> Also, for questions that concern exclusively OctaveForge functions,
>>>>>>>>>>> please use the OctaveForge mailing list.
>>>>>>>>>>>
>>>>>>>>>>> octave:1> a = parcellfun (2, @sin, {1, 2})
>>>>>>>>>>> parcellfun: 2/2 jobs done
>>>>>>>>>>> a =
>>>>>>>>>>>
>>>>>>>>>>> 0.84147 0.90930
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Thanks. Sorry about the mail list confusion. I'm getting
>>>>>>>>>> octave:1> a = parcellfun(2, @sin, {1,2})
>>>>>>>>>> parcellfun: 2/2 jobs done
>>>>>>>>>> warning: broken pipe -- some output may be lost
>>>>>>>>>>
>>>>>>>>>> At this point octave seems to hang indefinitely. I'm running 64 bit
>>>>>>>>>> Kubuntu 9.04. Octave is 3.3.50+ checked out yesterday.
>>>>>>>>>>
>>>>>>>>>> Michael
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Do you use the SVN version of the general package? If not, do so.
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>
>>>>>>>> I had been using the released general package, but I just made if from
>>>>>>>> SVN, and I get the same result.
>>>>>>>> Thanks, M.
>>>>>>>>
>>>>>>>
>>>>>>> I'm using the same (3.3.50+ just built) on OpenSUSE 11.0 without
>>>>>>> problems. Does __exit__ work as expected for you?
>>>>>>> Otherwise, I'm afraid you'll need to investigate for yourself what is
>>>>>>> wrong.
>>>>>>>
>>>>>>> --
>>>>>>> RNDr. Jaroslav Hajek
>>>>>>> computing expert & GNU Octave developer
>>>>>>> Aeronautical Research and Test Institute (VZLU)
>>>>>>> Prague, Czech Republic
>>>>>>> url: www.highegg.matfyz.cz
>>>>>>>
>>>>>>
>>>>>> I'm re-sending this due to a confusing quoted-text misformatting
>>>>>> problem.
>>>>>>
>>>>>> If it type __exit__ from the octave prompt, I get dropped out to the
>>>>>> shell. That's the expected behavior, correct? A little more
>>>>>> experimentation shows that it works sometimes:
>>>>>>
>>>>>> octave:1> parcellfun(1, @sin, {1,2})
>>>>>> parcellfun: 2/2 jobs done
>>>>>> octave:2> [a] = parcellfun(1, @sin, {1,2})
>>>>>> parcellfun: 2/2 jobs done
>>>>>> a =
>>>>>>
>>>>>> 0.84147 0.90930
>>>>>>
>>>>>> octave:3> [a] = parcellfun(2, @sin, {1,2,3})
>>>>>> parcellfun: 3/3 jobs done
>>>>>> a =
>>>>>>
>>>>>> 0.84147 0.90930 0.14112
>>>>>>
>>>>>> octave:4> [a] = parcellfun(2, @sin, {1,2})
>>>>>> parcellfun: 2/2 jobs done
>>>>>> warning: broken pipe -- some output may be lost
>>>>>>
>>>>>> M.
>>>>>>
>>>>>
>>>>> Never happens for me. I just tried at least 20 times, even 100 times
>>>>> with a for loop. So I can hardly help you.
>>>>> One place that may generate this is the block at lines 254-258; if
>>>>> closing pipes by subprocesses fails. But I don't know why that should
>>>>> happen for you and not for me.
>>>>>
>>>>> --
>>>>> RNDr. Jaroslav Hajek
>>>>> computing expert & GNU Octave developer
>>>>> Aeronautical Research and Test Institute (VZLU)
>>>>> Prague, Czech Republic
>>>>> url: www.highegg.matfyz.cz
>>>>>
>>>>
>>>> OK, thanks for clearing up the syntax for me. I don't have the
>>>> knowledge to investigate further.
>>>> Thanks, Michael
>>>>
>>>
>>> I could make you some test patches that may help with the issue, but
>>> I'm short of time right now. If you can wait until November and remind
>>> me then, I'll try to help you more.
>>>
>>> regards
>>>
>>> --
>>> RNDr. Jaroslav Hajek
>>> computing expert & GNU Octave developer
>>> Aeronautical Research and Test Institute (VZLU)
>>> Prague, Czech Republic
>>> url: www.highegg.matfyz.cz
>>>
>>
>> It's no hurry for me, I was just investigating it as a way of
>> parallelizing some tasks. I'd be happy to test it again in the future.
>> Cheers, M.
>>
>
> Well, unless it actually makes problems, I'd say ignore the warning
> for the time being. Chances are that it won't even manifest on your
> real problem, because it looks like a race condition dependent on
> speed of execution of some code. But I'll be glad if eventually the
> problem is discovered so that parcellfun/pararrayfun are improved.
>
> regards
>
> --
> RNDr. Jaroslav Hajek
> computing expert & GNU Octave developer
> Aeronautical Research and Test Institute (VZLU)
> Prague, Czech Republic
> url: www.highegg.matfyz.cz
>
Well, I have tried with a more time consuming example, and it occurs
there, too. Octave locks up when this happens, so it's not just a
warning, it's pretty much a show stopper. This does look like a very
promising feature, though.
M.
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