Thanks a lot. On my cluster, there are two mpi installations. The default
is old and what I installed is newer.
On compiling I get an error:
x10c++ -x10rt mpi MontePiCluster.x10 -o montepiobj -O
x10c++: /usr/bin/ld: warning: libmpi_cxx.so.1, needed by
~/X10Source/x10.dist/lib/*libx10rt_mpi.so, not found* (try using -rpath or
-rpath-link)
/usr/bin/ld: warning: libmpi.so.1, needed by
~/X10Source/x10.dist/lib/libx10rt_mpi.so, not found (try using -rpath or
-rpath-link)
~/X10Source/x10.dist/lib/libx10rt_mpi.so: undefined reference to
`MPI_Op_commutative'
~/X10Source/x10.dist/lib/libx10rt_mpi.so: undefined reference to
`MPI_Reduce_local'
collect2: ld returned 1 exit status
x10c++: Non-zero return code: 1
So I provided the path of newer installation using LD_LIBRARY_PATH. It
compiles but gives warning:
x10c++: /usr/bin/ld: warning: libmpi_cxx.so.1, needed by
~/X10Source/x10.dist/lib/libx10rt_mpi.so, may conflict with libmpi_cxx.so.0
/usr/bin/ld: warning: libmpi.so.1, needed by
~/X10Source/x10.dist/lib/libx10rt_mpi.so, may conflict with libmpi.so.0
Moreover, on running it crashes!
My question is: can we specify the location of MPI from which X10 should
connect, at the time we compile X10? I tried to see but could not
ascertain. I had compiled X10 as:
cd x10.dist && ant dist -DX10RT_MPI=true
Please let me know. Thanks a lot for your help.
Thanks and Regards
Sparsh Mittal
On Mon, Feb 18, 2013 at 2:27 PM, Josh Milthorpe
<josh.miltho...@anu.edu.au>wrote:
> Hi Sparsh,
>
> to use MPI you must compile using the MPI version of X10RT.
>
> $ *x10c++ **-x10rt mpi MontePiCluster.x10 -o montepiobj -O*
>
>
> http://x10-lang.org/documentation/practical-x10-programming/x10rt-implementations.html
>
> Cheers,
>
> Josh
>
>
> On 19/02/13 04:22, Sparsh Mittal wrote:
>
> Hello
>
> I am trying to run
> http://x10-lang.org/documentation/code-examples/small-examples.html?id=103example
> with MPI, as follows:
>
> *export X10_NPLACES=2
> x10c++ **MontePiCluster.x10 -o montepiobj -O
> mpirun -np 4 ./montepiobj 1000 2 4
> *
> Here ./montepiobj 1000 2 4 tells to run with 1000 guesses, at 2 places
> with 4 threads.
>
> In the MontePiCluster.x10 file, I have just added one statement:
>
> *Console.OUT.println(" I am running at "+ places + " places ");*
>
> So, the output comes:
>
> *I am running at 2 places
> I am running at 2 places
> The value of pi is 3.112
> I am running at 2 places
> The value of pi is 3.112
> The value of pi is 3.112
> I am running at 2 places
> The value of pi is 3.112*
>
>
> So, my expectation was that with *-np 4,* and* *X10*_*NPLACES=2*, *it
> will make it 4*2 = 8 places; but what is happening right now is that same
> m1 is being run at 4 mpi processors. How can we use the mpi processor so
> that value of pi is calculated at 8 places (only then using MPI is of any
> use ) and not at 2 places, repeated at 4 processors.
>
> I will be thankful for your answers.
>
> Thanks and Regards
> Sparsh Mittal
>
>
>
> ------------------------------------------------------------------------------
> The Go Parallel Website, sponsored by Intel - in partnership with Geeknet,
> is your hub for all things parallel software development, from weekly thought
> leadership blogs to news, videos, case studies, tutorials, tech docs,
> whitepapers, evaluation guides, and opinion stories. Check out the most
> recent posts - join the conversation now. http://goparallel.sourceforge.net/
>
>
>
> _______________________________________________
> X10-users mailing
> listX10-users@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/x10-users
>
>
>
>
> ------------------------------------------------------------------------------
> The Go Parallel Website, sponsored by Intel - in partnership with Geeknet,
> is your hub for all things parallel software development, from weekly
> thought
> leadership blogs to news, videos, case studies, tutorials, tech docs,
> whitepapers, evaluation guides, and opinion stories. Check out the most
> recent posts - join the conversation now.
> http://goparallel.sourceforge.net/
> _______________________________________________
> X10-users mailing list
> X10-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/x10-users
>
>
------------------------------------------------------------------------------
The Go Parallel Website, sponsored by Intel - in partnership with Geeknet,
is your hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials, tech docs,
whitepapers, evaluation guides, and opinion stories. Check out the most
recent posts - join the conversation now. http://goparallel.sourceforge.net/
_______________________________________________
X10-users mailing list
X10-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/x10-users
