[mpich-discuss] Fatal error in MPI_Barrier

Mon Feb 2 12:39:05 CST 2009

Hello. I Have tested to use the command:

mpiexec -recvtimeout 30 -n 2 /home/mpi/mpich2-1.0.8/examples/cpi   

and this is the result.

/********************************************************************************************************************************************************/                                                   
Process 0 of 2 is on wireless                                                                                                         
Process 1 of 2 is on wireless2                                                                                                        
Fatal error in MPI_Bcast: Other MPI error, error stack:                                                                               
MPI_Bcast(786)............................: MPI_Bcast(buf=0x7ffff732586c, count=1, MPI_INT, root=0, MPI_COMM_WORLD) failed            
MPIR_Bcast(230)...........................:                                                                                           
MPIC_Send(39).............................:                                                                                           
MPIC_Wait(270)............................:                                                                                           
MPIDI_CH3i_Progress_wait(215).............: an error occurred while handling an event returned by MPIDU_Sock_Wait()                   
MPIDI_CH3I_Progress_handle_sock_event(420):
MPIDU_Socki_handle_read(637)..............: connection failure (set=0,sock=1,errno=104:Connection reset by peer)[cli_0]: aborting job:
Fatal error in MPI_Bcast: Other MPI error, error stack:
MPI_Bcast(786)............................: MPI_Bcast(buf=0x7ffff732586c, count=1, MPI_INT, root=0, MPI_COMM_WORLD) failed
MPIR_Bcast(230)...........................:
MPIC_Send(39).............................:
MPIC_Wait(270)............................:
MPIDI_CH3i_Progress_wait(215).............: an error occurred while handling an event returned by MPFatal error in MPI_Bcast: Other MPI error, error stack:
MPI_Bcast(786)...............................: MPI_Bcast(buf=0xbf82bec8, count=1, MPI_INT, root=0, MPI_COMM_WORLD) failed
MPIR_Bcast(198)..............................:
MPIC_Recv(81)................................:
MPIC_Wait(270)...............................:
MPIDI_CH3i_Progress_wait(215)................: an error occurred while handling an event returned by MPIDU_Sock_Wait()
MPIDI_CH3I_Progress_handle_sock_event(640)...:
MPIDI_CH3_Sockconn_handle_connopen_event(887): unable to find the process group structure with id <>[cli_1]: aborting job:
Fatal error in MPI_Bcast: Other MPI error, error stack:
MPI_Bcast(786)...............................: MPI_Bcast(buf=0xbf82bec8, count=1, MPI_INT, root=0, MPI_COMM_WORLD) failed
MPIR_Bcast(198)..............................:
MPIC_Recv(81)................................:
MPIC_Wait(270)...............................:
MPIDI_CH3i_Progress_wait(215)................: an error occurred while handling an event rIDU_Sock_Wait()
MPIDI_CH3I_Progress_handle_sock_event(420):
MPIDU_Socki_handle_read(637)..............: connection failure (set=0,sock=1,errno=104:Connection reset by peer)
eturned by MPIDU_Sock_Wait()
MPIDI_CH3I_Progress_handle_sock_event(640)...:
MPIDI_CH3_Sockconn_handle_connopen_event(887): unable to find the process group structure with id <>
rank 1 in job 21  wireless_47695   caused collective abort of all ranks
  exit status of rank 1: return code 1
rank 0 in job 21  wireless_47695   caused collective abort of all ranks
  exit status of rank 0: return code 1

/********************************************************************************************************************************************************/

The mpdcheck said that has a problem with the first ip but it's solved.
I tested:

mpdcheck -s                   and in the other node             mpdcheck -c "name" "number"    -------------->   Well.
mpiexec -n 1 /bin/hostname ------------------------------------------------------------------------------------------------------------->   Well.
mpiexec -l -n 4 /bin/hostname ---------------------------------------------------------------------------------------------------------->   Well.

I have to say that with all command i have to put the options -recvtimeout 30 because but have problems. Without this option, say me:

mpiexec_wireless (mpiexec 392): no msg recvd from mpd when expecting ack of request

What can i do?? Please help and sorry for my poor english.

From: ajcampa at hotmail.com
To: mpich-discuss at mcs.anl.gov
Date: Mon, 2 Feb 2009 18:17:39 +0100
Subject: Re: [mpich-discuss] Fatal error in MPI_Barrier

Well, thanks for your answer.  Really, the name of mi pc is "Wireless" and the othes pc "Wireless2", i use in the two pc, the same user "mpi". 

I will try the mpdchech utility and then write something.

Thank for all.

Un saludo desde España.

From: thakur at mcs.anl.gov
To: mpich-discuss at mcs.anl.gov
Date: Mon, 2 Feb 2009 10:55:03 -0600
Subject: Re: [mpich-discuss] Fatal error in MPI_Barrier

Are you really trying to use the wireless network? Looks like 
that's what is getting used.

You can use the mpdcheck utility to diagnose 
network configuration problems. See Appendix A.2 of the installation 
guide.

Rajeev

  From: mpich-discuss-bounces at mcs.anl.gov 
  [mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of Antonio José 
  Gallardo Díaz
Sent: Monday, February 02, 2009 9:49 AM
To: 
  mpich-discuss at mcs.anl.gov
Subject: [mpich-discuss] Fatal error in 
  MPI_Barrier

  Hello, this error show me when i try my jobs that use 
  MPI.

Fatal error in MPI_Barrier: Other MPI error, error 
  stack:
MPI_Barrier(406).............................: 
  MPI_Barrier(MPI_COMM_WORLD) 
  failed
MPIR_Barrier(77).............................:
MPIC_Sendrecv(123)...........................:
MPIC_Wait(270)...............................:
MPIDI_CH3i_Progress_wait(215)................: 
  an error occurred while handling an event returned by 
  MPIDU_Sock_Wait()
MPIDI_CH3I_Progress_handle_sock_event(640)...:
MPIDI_CH3_Sockconn_handle_connopen_event(887): 
  unable to find the process group structure with id <��oz�>[cli_1]: 
  aborting job:
Fatal error in MPI_Barrier: Other MPI error, error 
  stack:
MPI_Barrier(406).............................: 
  MPI_Barrier(MPI_COMM_WORLD) 
  failed
MPIR_Barrier(77).............................:
MPIC_Sendrecv(123)...........................:
MPIC_Wait(270)...............................:
MPIDI_CH3i_Progress_wait(215)................: 
  an error occurred while handling an event returned by 
  MPIDU_Sock_Wait()
MPIDI_CH3I_Progress_handle_sock_event(640)...:
MPIDI_CH3_Sockconn_handle_connopen_event(887): 
  unable to find the process group structure with id <��oz�>
rank 1 in 
  job 15  wireless_43226   caused collective abort of all 
  ranks
  exit status of rank 1: killed by signal 9

I have two 
  PC's with linux (kubuntu 8.10). I make a cluster using this machines. When use 
  for example the command "mpiexec -l -n 2 hostname" i can see that it's all 
  right, but when i try to send o receive some thing i have the same error. I 
  don't know why. Please i need one hand. Thanks for all. 

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