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<TITLE>Problems with Barriers on MPICH2-1.3.2p1 on Windows XP and Windows Server 2008</TITLE>
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<P><FONT SIZE=2>Hi users,<BR>
<BR>
I have some issues with MPI_Barrier() on the MPICH2-1.3.2p1 build on Windows.<BR>
On a single node, the operation works flawlessly, however when the program is scheduled to run on multiple nodes I get the following errors.<BR>
<BR>
mf.txt<BR>
node0:1<BR>
node1:1<BR>
<BR>
>mpiexec -machinefile mf.txt -n 2 mpi_test.exe<BR>
<BR>
Fatal error in PMPI_Barrier: Other MPI error, error stack:<BR>
PMPI_Barrier(425)...........................: MPI_Barrier(MPI_COMM_WORLD) failed<BR>
MPIR_Barrier_impl(331)......................: Failure during collective<BR>
MPIR_Barrier_impl(313)......................:<BR>
MPIR_Barrier_intra(83)......................:<BR>
MPIC_Sendrecv(192)..........................:<BR>
MPIC_Wait(540)..............................:<BR>
MPIDI_CH3I_Progress(353)....................:<BR>
MPID_nem_mpich2_blocking_recv(905)..........:<BR>
MPID_nem_newtcp_module_poll(37).............:<BR>
MPID_nem_newtcp_module_connpoll(2655).......:<BR>
gen_cnting_fail_handler(1738)...............: connect failed - the network location connot be reached. For information about network troubleshooting, see Windows Help.<BR>
<BR>
(errno 1231)<BR>
<BR>
job aborted:<BR>
rank: node: exit code[: error message]<BR>
0: node0: 123<BR>
1: node1: 1: process 1 exited without calling finalize<BR>
<BR>
Additional Notes:<BR>
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.<BR>
<BR>
Any help to identify the problem here would be great.<BR>
<BR>
<BR>
Regards,<BR>
Zuwei<BR>
<BR>
</FONT>
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