Hi Michael,
for Native X10, Runtime.getName() uses the value returned by gethostname().
This should be null-terminated:
http://pubs.opengroup.org/onlinepubs/009695399/functions/gethostname.html
However, it looks like for your system, there are a number of spaces in the
hostname before the null character. What platform are you running on?
What do you get if you run the command:
$ echo `hostname`'|'
On my system, I see
hostname.ibm.com|
Cheers,
Josh
On 10 September 2014 08:27, Michael Dietrich <
michael.dietr...@s2010.tu-chemnitz.de> wrote:
> 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
> >>>>>
> >>>>>
> >>>>>
> ------------------------------------------------------------------------------
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> >>>>> http://tv.slashdot.org/
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> >>>>> https://lists.sourceforge.net/lists/listinfo/x10-users
> >>>
> >>>
> >>>
> >>>
> >>>
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> >>
> >>
> >>
> >>
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> >>
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> >>
> >>
> >>
> >> _______________________________________________
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> >
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> ------------------------------------------------------------------------------
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> > When you want reliability, choose Perforce
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> >
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>
>
>
>
>
> ------------------------------------------------------------------------------
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> Manually upgrade your production database.
> When you want reliability, choose Perforce
> Perforce version control. Predictably reliable.
>
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