[MPICH] pthread_kill(thread,SIGSTOP) is killing the whole process instead of killing the thread

[Rajeev Thakur]

If you call MPI functions from multiple threads, you will need a thread-safe
version of MPI. MPICH 1.2.4 is not thread-safe. MPICH2 1.0.4 is. Also,
http://publib.boulder.ibm.com/iseries/v5r2/ic2924/index.htm?info/apis/users_
95.htm says that sending SIGKILL to a thread kills the entire process.
 
Rajeev
 


  _____  

From: owner-mpich-discuss at mcs.anl.gov
[mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Ravi ravi
Sent: Thursday, November 23, 2006 3:14 AM
To: mpich-discuss at mcs.anl.gov
Subject: [MPICH] pthread_kill(thread,SIGSTOP) is killing the whole process
instead of killing the thread


hi all,

    I am using mpich-1.2.4 over my AIX cluster.

My application uses threads in MPI programs. And I don't need a thread-safe
version of MPI here because we dont share any data to operate from threads.

I am trying to kill the thread of one of  the processes in my application
like this

pthread_kill(threadID,SIGSTOP); OR pthread_kill(threadID,SIGKILL)

this is resulting in the destruction of that whole process intern it is
stopping my application. 

My thread is doing some receiving operation like this
MPI_Recv(.................);


I want to kill the thread from the main thread as soon as an event occurs in
the mainthread.

Any help ??

Thanks and Regards
Ravi.Thati

Our attempts may fail but we should not fail to attempt.


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