[mpich-discuss] Problems with Barriers on MPICH2-1.3.2p1 on Windows XP and Windows Server 2008

[Jayesh Krishna]

Hi,
 From the error message it looks like a network connectivity issue (not related to MPI_Barrier()). Can you send us a test program that fails ?
 Can you run cpi.exe (c:\program files\MPICH2\examples\cpi.exe) across the nodes ?

Regards,
Jayesh

----- Original Message -----
From: "Li Zuwei" <lzuwei at dso.org.sg>
To: mpich-discuss at mcs.anl.gov
Sent: Thursday, February 24, 2011 2:00:53 AM
Subject: [mpich-discuss] Problems with Barriers on MPICH2-1.3.2p1 on Windows	XP and Windows Server 2008


Problems with Barriers on MPICH2-1.3.2p1 on Windows XP and Windows Server 2008 

Hi users, 

I have some issues with MPI_Barrier() on the MPICH2-1.3.2p1 build on Windows. 
On a single node, the operation works flawlessly, however when the program is scheduled to run on multiple nodes I get the following errors. 

mf.txt 
node0:1 
node1:1 

>mpiexec -machinefile mf.txt -n 2 mpi_test.exe 

Fatal error in PMPI_Barrier: Other MPI error, error stack: 
PMPI_Barrier(425)...........................: MPI_Barrier(MPI_COMM_WORLD) failed 
MPIR_Barrier_impl(331)......................: Failure during collective 
MPIR_Barrier_impl(313)......................: 
MPIR_Barrier_intra(83)......................: 
MPIC_Sendrecv(192)..........................: 
MPIC_Wait(540)..............................: 
MPIDI_CH3I_Progress(353)....................: 
MPID_nem_mpich2_blocking_recv(905)..........: 
MPID_nem_newtcp_module_poll(37).............: 
MPID_nem_newtcp_module_connpoll(2655).......: 
gen_cnting_fail_handler(1738)...............: connect failed - the network location connot be reached. For information about network troubleshooting, see Windows Help. 

(errno 1231) 

job aborted: 
rank: node: exit code[: error message] 
0: node0: 123 
1: node1: 1: process 1 exited without calling finalize 

Additional Notes: 
When running against code without any MPI_Barrier calls, no problems with were encountered (ie: on multiple nodes send and recv). Based on that I presume my settings were correct and the problem might lie in the barrier implementation on windows. 

Any help to identify the problem here would be great. 


Regards, 
Zuwei 


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