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Operating Systems Linux Rocks cluster 6.1 and MPICH2 problem?????? Post 302756249 by gabam on Tuesday 15th of January 2013 12:58:08 PM
Old 01-15-2013
Rocks cluster 6.1 and MPICH2 problem??????

Hey friends,
I am trying to execute a simple hello world in mpi on MPICH2 on Rocks cluster. here is the c source code.

Code:
 
#include <mpi.h>
#include <stdio.h>
int main( int argc, char ** argv )
{
 MPI_Init( NULL, NULL );
 int world_size;
 MPI_Comm_size( MPI_COMM_WORLD, &world_size );
 int world_rank;
 MPI_Comm_rank( MPI_COMM_WORLD, &world_rank );
 char processor_name[MPI_MAX_PROCESSOR_NAME];
 int name_len;
 MPI_Get_processor_name( processor_name, &name_len );
 printf( "Hello world from processor %s, rank %d" " out of %d processors\n", processor_name, world_rank, world_size );
 MPI_Finalize();
}


And I compile it like this.

Code:
/opt/mpich2/gnu/bin/mpicc ./hello.c -o hello

I have the following entry on the machine file.

Code:
compute-0-0
compute-0-1

Now here is how I run the hello program

Code:
/opt/mpich/gnu/bin/mpirun -np 2 -machinefile machines ./hello

which gives me the follwing error.

Code:
 
[user1@cluster ~]$ /opt/mpich2/gnu/bin/mpirun -np 2 -machinefile machines ./mpi_hello_world
Could not chdir to home directory /export/home/user1: No such file or directory
Could not chdir to home directory /export/home/user1: No such file or directory
[proxy:0:0@compute-0-0.local] launch_procs (./pm/pmiserv/pmip_cb.c:687): unable to change wdir to /export/home/user1 (No such file or directory)
[proxy:0:0@compute-0-0.local] HYD_pmcd_pmip_control_cmd_cb (./pm/pmiserv/pmip_cb.c:935): launch_procs returned error
[proxy:0:0@compute-0-0.local] HYDT_dmxu_poll_wait_for_event (./tools/demux/demux_poll.c:77): callback returned error status
[proxy:0:0@compute-0-0.local] [mpiexec@cluster.hpc.org] control_cb (./pm/pmiserv/pmiserv_cb.c:215): assert (!closed) failed
[mpiexec@cluster.hpc.org] HYDT_dmxu_poll_wait_for_event (./tools/demux/demux_poll.c:77): callback returned error status
[mpiexec@cluster.hpc.org] HYD_pmci_wait_for_completion (./pm/pmiserv/pmiserv_pmci.c:181): error waiting for event
[mpiexec@cluster.hpc.org] main (./ui/mpich/mpiexec.c:405): process manager error waiting for completion
[user1@cluster ~]$

Please help me.
 

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IRSEND(1)								FSF								 IRSEND(1)

NAME
irsend - basic LIRC program to send infra-red commands SYNOPSIS
irsend [options] DIRECTIVE REMOTE CODE [CODE...] DESCRIPTION
Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such as TV boxes, HiFi sets, etc. DIRECTIVE can be: SEND_ONCE - send CODE [CODE ...] once SEND_START - start repeating CODE SEND_STOP - stop repeating CODE LIST - list configured remote items SET_TRANSMITTERS - set transmitters NUM [NUM ...] SIMULATE - simulate IR event REMOTE is the name of a remote, as described in the lircd configuration file. CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file. NUM is the transmitter number of the hardware device. For the LIST DIRECTIVE, REMOTE and/or CODE can be empty: LIST "" "" - list all configured remote names LIST REMOTE "" - list all codes of REMOTE LIST REMOTE CODE - list only CODE of REMOTE The SIMULATE command only works if it has been explicitly enabled in lircd. -h --help display usage summary -v --version display version -d --device use given lircd socket [/var/run/lirc/lircd] -a --address=host[:port] connect to lircd at this address -# --count=n send command n times EXAMPLES
irsend LIST DenonTuner "" irsend SEND_ONCE DenonTuner PROG-SCAN irsend SEND_ONCE OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3 irsend SEND_STOP OnkyoAmpli VOL-DOWN irsend SET_TRANSMITTERS 1 irsend SET_TRANSMITTERS 1 3 4 irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S" FILES
/etc/lirc/lircd.conf Default lircd configuration file. It should contain all the remotes, their infra-red codes and the corresponding timing and wave- form details. DIAGNOSTICS
If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics: "irsend: could not connect to socket" "irsend: Connection refused" (or "Permission denied"). SEE ALSO
The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory. lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org. irsend 0.8.7pre1 May 2010 IRSEND(1)
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