MPI message passing interface

система ubuntu karmic koala (9.10)
поставил mpich, mpich-dev.
программы пишутся на C.
компиляция идет прекрасно, однако не выполняется когда выполняем на нескольких процессах...
привожу коды :
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nizamovich@nizamovich-desktop:~/example$ mpicc hellow.c -o a
nizamovich@nizamovich-desktop:~/example$ ./a
Hello world from process 0 of 1
nizamovich@nizamovich-desktop:~/example$ mpirun -np 3 a
mpiexec_nizamovich-desktop: cannot connect to local mpd (/tmp/mpd2.console_nizamovich); possible causes:
1. no mpd is running on this host
2. an mpd is running but was started without a «console» (-n option)
In case 1, you can start an mpd on this host with:
mpd &
and you will be able to run jobs just on this host.
For more details on starting mpds on a set of hosts, see
the MPICH2 Installation Guide.
nizamovich@nizamovich-desktop:~/example$ mpirun -np 3 ./a
mpiexec_nizamovich-desktop: cannot connect to local mpd (/tmp/mpd2.console_nizamovich); possible causes:
1. no mpd is running on this host
2. an mpd is running but was started without a «console» (-n option)
In case 1, you can start an mpd on this host with:
mpd &
and you will be able to run jobs just on this host.
For more details on starting mpds on a set of hosts, see
the MPICH2 Installation Guide.
nizamovich@nizamovich-desktop:~/example$
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я понимаю что он ругается что то связанное с mpd, однако как это исправить ???
помогите ...