<html>
<head>
<style><!--
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
font-size: 10pt;
font-family:Tahoma
}
--></style>
</head>
<body class='hmmessage'><div dir='ltr'>
Hi Rajeev<br><br>Thanks for your response but there is no any firewall among them.<br><br>mpi0 is Ubuntu <br>mpi1 to mpi4 are Debian (minimun distribution without GUI)<br><br>I am doing the conection among them with ssh and it is well configured and properly working, I tested it.<br>I am thinking,...are you using a socket conettion to comunicate the diferent processes? This could be the problem in the Ubuntu one (mpi0).<br>If this is the case, can you tell me the exactly socket you are using?<br><br>Thanks<br>Miguel Angel<br><br><br><div>> From: thakur@mcs.anl.gov<br>> Date: Sat, 22 Oct 2011 15:30:26 -0500<br>> To: mpich-discuss@mcs.anl.gov<br>> Subject: Re: [mpich-discuss] MPID_nem_tcp_connpoll(1826): Communication error with rank 0: Connection refused<br>> <br>> Make sure the 5 machines can communicate with each other, i.e., there is no firewall preventing connections.<br>> <br>> Rajeev<br>> <br>> On Oct 22, 2011, at 12:36 PM, Miguel Angel Fernández wrote:<br>> <br>> > Hello everybody<br>> > <br>> > I'm trying to fix a problem that appear when I execute one of the mpich2 program examples.<br>> > As you can see, if I execute a normal command there are no problems. The cluster work properly.<br>> > <br>> > mpi@mpi0:~$ mpiexec -f ./mpich2-install/machinefile -n 5 hostname<br>> > mpi0<br>> > mpi2<br>> > mpi3<br>> > mpi1<br>> > mpi4<br>> > mpi@mpi0:~$<br>> > <br>> > but when I try to execute the program, the results are something like this<br>> > <br>> > mpi@mpi0:~$ mpiexec -f ./mpich2-install/machinefile -n 5 /home/mpi/mpich2-install/workspace/Prueba/Debug/Prueba<br>> > Hello MPI World the original.<br>> > Hello MPI World the original.<br>> > Hello MPI World the original.<br>> > Hello MPI World the original.<br>> > Hello MPI World the original.<br>> > From process 0: Num processes: 5<br>> > Fatal error in MPI_Send: Other MPI error, error stack:<br>> > MPI_Send(173)..............: MPI_Send(buf=0xbfcbe268, count=26, MPI_CHAR, dest=0, tag=0, MPI_COMM_WORLD) failed<br>> > MPID_nem_tcp_connpoll(1826): Communication error with rank 0: Connection refused<br>> > Fatal error in MPI_Send: Other MPI error, error stack:<br>> > MPI_Send(173)..............: MPI_Send(buf=0xbfb32ca8, count=26, MPI_CHAR, dest=0, tag=0, MPI_COMM_WORLD) failed<br>> > MPID_nem_tcp_connpoll(1826): Communication error with rank 0: Connection refused<br>> > Fatal error in MPI_Send: Other MPI error, error stack:<br>> > MPI_Send(173)..............: MPI_Send(buf=0xbfa49e98, count=26, MPI_CHAR, dest=0, tag=0, MPI_COMM_WORLD) failed<br>> > MPID_nem_tcp_connpoll(1826): Communication error with rank 0: Connection refused<br>> > Fatal error in MPI_Send: Other MPI error, error stack:<br>> > MPI_Send(173)..............: MPI_Send(buf=0xbfa57538, count=26, MPI_CHAR, dest=0, tag=0, MPI_COMM_WORLD) failed<br>> > MPID_nem_tcp_connpoll(1826): Communication error with rank 0: Connection refused<br>> > <br>> > Do you have any idea what can be the problem?<br>> > <br>> > Thank you in advance<br>> > Miguel Angel<br>> > <br>> > _______________________________________________<br>> > mpich-discuss mailing list mpich-discuss@mcs.anl.gov<br>> > To manage subscription options or unsubscribe:<br>> > https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss<br>> <br>> _______________________________________________<br>> mpich-discuss mailing list mpich-discuss@mcs.anl.gov<br>> To manage subscription options or unsubscribe:<br>> https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss<br></div> </div></body>
</html>