[MPICH] thread safety

[Rajeev Thakur]

By the way, the output you attached says MPI_THREAD_FUNNELED. In that case,
you cannot call MPI_Send and MPI_Recv from different threads as you are. You
can do that only for MPI_THREAD_MULTIPLE, in which case you should not get
the error message you are seeing because the code in MPICH2 checks for
thread multiple before printing the error message.

Rajeev
 

> -----Original Message-----
> From: owner-mpich-discuss at mcs.anl.gov 
> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of 
> lunasole at interfree.it
> Sent: Monday, September 12, 2005 3:54 AM
> To: mpich-discuss at mcs.anl.gov
> Subject: [MPICH] thread safety
> 
> 
> hi all,
> MPICH2 includes parts of MPI-2. from README, the sock channel 
> now has preliminary support for MPI_THREAD_SERIALIZED and 
> MPI_THREAD_MULTIPLE on both Unix and Microsoft Windows.  Does 
> it means that the thread safety isn't implemented in Linux?
> i implemented a simple example (a process creates 2 threads: 
> one thread that it sends a buffer and an other that it 
> receives this) but it doesn't work. In attached the source 
> file and an example of output.
> thank's for you help.
> 
> 
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