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<p class=MsoNormal>We are running mpich2 applications on many Windows
platforms. In a few installations, we have a problem where the job dies
while initializing mpi. To examine this further, we ran a simple Hellompi
program,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:green'>// mpi2.cpp : Defines the entry point
for the console application.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:green'>//<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:green'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:blue'>#include</span><span style='font-size:
10.0pt;font-family:"Courier New"'> <span style='color:#A31515'>"stdafx.h"<o:p></o:p></span></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:#A31515'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:blue'>int</span><span style='font-size:10.0pt;
font-family:"Courier New"'> master ;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:blue'>int</span><span style='font-size:10.0pt;
font-family:"Courier New"'> n_workers ;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>MPI_Comm world, workers ;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>MPI_Group world_group, worker_group ;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:blue'>#define</span><span style='font-size:
10.0pt;font-family:"Courier New"'> BSIZE MPI_MAX_PROCESSOR_NAME<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:blue'>char</span><span style='font-size:10.0pt;
font-family:"Courier New"'> chrNames[MPI_MAX_PROCESSOR_NAME*64];<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:blue'>int</span><span style='font-size:10.0pt;
font-family:"Courier New"'> _tmain(<span style='color:blue'>int</span> argc, <span
style='color:blue'>char</span>* argv[])<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>{<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>int</span> nprocs=1;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> world =
MPI_COMM_WORLD;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>int</span> iVal=0;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>int</span>
rank, size, len;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>char</span>
name[MPI_MAX_PROCESSOR_NAME];<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> MPI_Status reqstat;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span style='color:blue'>char</span>*
p;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span style='color:blue'>int</span>
iNodeCnt=1;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> SYSTEM_INFO info;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> GetSystemInfo( &info );<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span style='color:blue'>int</span> i;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> MPI_Init(&argc,
&argv);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
MPI_Comm_rank(MPI_COMM_WORLD, &rank);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
MPI_Comm_size(MPI_COMM_WORLD, &size);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
MPI_Get_processor_name(name, &len);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>if</span> (rank==0) <o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> {<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span style='color:green'>//
server commands<o:p></o:p></span></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> chrNames[0]=0;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> strcat(chrNames,<span
style='color:#A31515'>"||"</span>);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
strcat(chrNames,name);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> strcat(chrNames,<span
style='color:#A31515'>"||"</span>);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
<span style='color:blue'>for</span> (i=1;i<size;i++) <o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> {<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
MPI_Recv(name,BSIZE,MPI_CHAR,i,999,MPI_COMM_WORLD,&reqstat);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
p=strstr(chrNames,name);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>if</span>(p==NULL)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> {<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
strcat(chrNames,name);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
strcat(chrNames,<span style='color:#A31515'>"||"</span>);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
iNodeCnt++;<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> }<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
<span style='color:green'>//printf("Hello MPI!\n");<o:p></o:p></span></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
printf(<span style='color:#A31515'>"Hello from Rank %d of %d on %s\n"</span>,i,size,name);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
}<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> printf(<span
style='color:#A31515'>"\nNodes:%d\n"</span>,iNodeCnt);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> printf(<span
style='color:#A31515'>"Names:%s\n"</span>,chrNames);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> } <o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span style='color:blue'>else</span> <o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> {<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
<span style='color:green'>// client commands<o:p></o:p></span></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>
MPI_Send(name,BSIZE,MPI_CHAR,0,999,MPI_COMM_WORLD);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> }<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> MPI_Finalize();<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'> <span
style='color:blue'>return</span> 0;<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>}<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>And
noted the same failure. Here is our output,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal>C:\MPI>mpiexec2 -localonly -n 3 hellompi<o:p></o:p></p>
<p class=MsoNormal>unable to read the cmd header on the pmi context, Error = -1<o:p></o:p></p>
<p class=MsoNormal>.<o:p></o:p></p>
<p class=MsoNormal>[01:4792]......ERROR:result command received but the
wait_list is empty.<o:p></o:p></p>
<p class=MsoNormal>[01:4792]....ERROR:unable to handle the command:
"cmd=result src=1 dest=1 tag=7<o:p></o:p></p>
<p class=MsoNormal>cmd_tag=2 cmd_orig=dbput ctx_key=1 result=DBS_SUCCESS "<o:p></o:p></p>
<p class=MsoNormal>[01:4792]...ERROR:sock_op_close returned while unknown
context is in state: SMPD_IDLE<o:p></o:p></p>
<p class=MsoNormal>mpiexec aborting job...<o:p></o:p></p>
<p class=MsoNormal>SuspendThread failed with error 5 for process
0:3AB7E6A8-6169-4544-8282-D4D35207<o:p></o:p></p>
<p class=MsoNormal>F564:'hellompi'<o:p></o:p></p>
<p class=MsoNormal>unable to suspend process.<o:p></o:p></p>
<p class=MsoNormal>received suspend command for a pmi context that doesn't
exist: unmatched id = 1<o:p></o:p></p>
<p class=MsoNormal>unable to read the cmd header on the pmi context, Error = -1<o:p></o:p></p>
<p class=MsoNormal>.<o:p></o:p></p>
<p class=MsoNormal>Error posting readv, An existing connection was forcibly closed
by the remote host.(10054)<o:p></o:p></p>
<p class=MsoNormal>received kill command for a pmi context that doesn't exist:
unmatched id = 1<o:p></o:p></p>
<p class=MsoNormal>unable to read the cmd header on the pmi context, Error = -1<o:p></o:p></p>
<p class=MsoNormal>.<o:p></o:p></p>
<p class=MsoNormal>Error posting readv, An existing connection was forcibly
closed by the remote ho<o:p></o:p></p>
<p class=MsoNormal>st.(10054)<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>job aborted:<o:p></o:p></p>
<p class=MsoNormal>rank: node: exit code[: error message]<o:p></o:p></p>
<p class=MsoNormal>0: usbospc126.americas.munters.com: 123: process 0 exited
without calling finalize<o:p></o:p></p>
<p class=MsoNormal>1: usbospc126.americas.munters.com: 123: process 1 exited
without calling finalize<o:p></o:p></p>
<p class=MsoNormal>2: usbospc126.americas.munters.com: 123<o:p></o:p></p>
<p class=MsoNormal>Fatal error in MPI_Finalize: Invalid communicator, error
stack:<o:p></o:p></p>
<p class=MsoNormal>MPI_Finalize(307): MPI_Finalize failed<o:p></o:p></p>
<p class=MsoNormal>MPI_Finalize(198):<o:p></o:p></p>
<p class=MsoNormal>MPID_Finalize(92):<o:p></o:p></p>
<p class=MsoNormal>PMPI_Barrier(476): MPI_Barrier(comm=0x44000002) failed<o:p></o:p></p>
<p class=MsoNormal>PMPI_Barrier(396): Invalid communicator<o:p></o:p></p>
<p class=MsoNormal>[0] unable to post a write of the abort command.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>This was run on a dual-core machine, running Windows XP,
SP2. What do these error messages tell us?<o:p></o:p></p>
<p class=MsoNormal>What is the best way to proceed in debugging this kind of
issue?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Dave Waite<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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