Hi,
I changed the code to the following:
import x10.io.Console;
class HelloWholeWorld {
public static def main(args:Rail[String]):void {
finish for (p in Place.places()) {
at (p) async {
Console.OUT.println(here+" says hello: "+ Runtime.getName());
Console.OUT.flush();
}
}
Console.OUT.println("The End!");
Console.OUT.flush();
}
}
with the same configuration as before I get the following:
[console]$ ./HelloWholeWorld
Place(1) says hello: 5979@name1
Place(0) says hello: 10184@name2
The End!
[console]$
The output order of the two places may vary but that's quite normal in
this case. The other message is printed at the end correctly now.
One more question is how these much spaces get into the output and how
to avoid them? This is actually not so important since this program
(and the output) is for practising reasons only but may be good to
know. :)
Thank you for your support.
bye
Zitat von Marco Bungart <m.bung...@gmx.net>:
> Hi,
>
> Am 08.09.2014 um 16:25 schrieb WangChen:
>> 1.
>> I tested it on my computer.
>> If all name in X10_HOSTLIST are invalid then the program won’t start.
>> if one of them is right, then the program will running on it.
>>
>> 2.
>> Since you used finish construct, “the End” should always be printed at last.
>> I get the right output when compiling with native x10(x10c++)
>> But i get the same results as you do when compiling with managed
>> x10(x10c). (“the End” not printed at last)
>
> Remember that println does buffer. To write directly (without
> buffering), call Console.OUT.flush() after every
> Console.OUT.println(...). This *should* fix ordering.
>
> Cheers,
> Marco
>
>>
>> 3.
>> To synchronize places you could use the barrier() method in the Team class.
>>
>> |*barrier <../../x10/util/Team.html#barrier()>*()|
>> Blocks until all team members have reached the barrier.
>>
>>
>> I’m new to X10 too and i’m not sure what i said was all right.
>> Hope i could help.
>>
>>
>> 在 2014年9月8日，下午9:29，Michael Dietrich
>> <michael.dietr...@s2010.tu-chemnitz.de
>> <mailto:michael.dietr...@s2010.tu-chemnitz.de>> 写道：
>>
>>> Hello,
>>>
>>> I'm sorry for my late answer. Finally I've written a test program like
>>> this
>>>
>>>
>>> import x10.io.Console;
>>>
>>> class HelloWholeWorld {
>>> public static def main(args:Rail[String]):void {
>>> finish for (p in Place.places()) {
>>> at (p) async Console.OUT.println(here+" says hello: "+
>>> Runtime.getName());
>>> }
>>>
>>> Console.OUT.println("The End");
>>>
>>> }
>>> }
>>>
>>> The following occurs
>>>
>>> [console]$ export X10_NPLACES=2
>>> [console]$ export X10_HOSTLIST="name1,name2"
>>> [console]$ ./HelloWholeWorld
>>> Place(0) says hello: 28901@name1
>>> The End
>>> Place(1) says
>>> hello: 25821@name2
>>>
>>> [console]$
>>>
>>>
>>> If I enter invalid names I don't get any output. "The End" neither. So
>>> it seems the program doesn't even start if it gets wrong input. If
>>> this is correct I would be content with this. Is there a way to avoid
>>> all these spaces?
>>>
>>> One simple question since I'm unexperienced with X10 yet: How to
>>> synchronize the places, so that "The End" is always printed at last?
>>>
>>> Thank you very much for your help.
>>>
>>> bye
>>>
>>>
>>> Zitat von WangChen <wang...@163.com <mailto:wang...@163.com>>:
>>>
>>>> Hi, Michael
>>>> I’m reading the doc these days and i found an api that might be
>>>> useful to you.
>>>> In the Runtime class:
>>>> getName
>>>>
>>>> public static String getName()
>>>> Get a string that identifies the X10 execution environment of this
>>>> place. The string is undefined but should be helpful for debugging,
>>>> typically containing the pid and hostname. On java it is equivalent
>>>> to
>>>> java.lang.management.ManagementFactory.getRuntimeMXBean().getName().
>>>>
>>>>
>>>>
>>>>
>>>> 在 2014年8月27日，下午11:33，Michael Dietrich
>>>> <michael.dietr...@s2010.tu-chemnitz.de
>>>> <mailto:michael.dietr...@s2010.tu-chemnitz.de>> 写道：
>>>>
>>>>> Hello,
>>>>>
>>>>> I am using X10 as a part of my bachelor's thesis about high
>>>>> performance programming languages (so maybe some more questions may be
>>>>> asked later :-) ).
>>>>>
>>>>> My first questions are about using several places:
>>>>>
>>>>> * If I set X10_NPLACES=n with having less than n hosts, the places
>>>>> will be distributed among the existing hosts, right?
>>>>>
>>>>> * Is there a possibility to find out which place is located on which
>>>>> host? In Chapel you have here.name.
>>>>>
>>>>> * Should X10_NTHREADS be equal to the amount of cores within a host?
>>>>>
>>>>> * Let there be X10_HOSTLIST="A,B,foo". A and B are the hosts I want to
>>>>> use while foo is a randomly chosen set of letters for simulating a
>>>>> mistyped or currently inactive computer.
>>>>> If I start a program with this parameter I don't get an error message
>>>>> though there is something wrong. If I do isDead() on every place every
>>>>> of them returns false.
>>>>> Did I maybe forget to set something so it doesn't distribute the
>>>>> places to other computers or does X10 ignore host names which cannot
>>>>> be reached?
>>>>>
>>>>> Thank you very much
>>>>> bye
>>>>>
>>>>>
>>>>> ------------------------------------------------------------------------------
>>>>> Slashdot TV.
>>>>> Video for Nerds. Stuff that matters.
>>>>> http://tv.slashdot.org/
>>>>> _______________________________________________
>>>>> X10-users mailing list
>>>>> X10-users@lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/x10-users
>>>
>>>
>>>
>>>
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>>
>>
>>
>> ------------------------------------------------------------------------------
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>>
>>
>>
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>
> ------------------------------------------------------------------------------
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