[MPICH] test/mpi/comm/cmfree.c

[Rajeev Thakur]

The current version of the test is attached. 

Rajeev 

> -----Original Message-----
> From: Toon Knapen [mailto:toon.knapen at fft.be] 
> Sent: Friday, July 13, 2007 3:02 AM
> To: Rajeev Thakur
> Cc: mpich-discuss at mcs.anl.gov
> Subject: Re: [MPICH] test/mpi/comm/cmfree.c
> 
> Rajeev Thakur wrote:
> > Correction!  The test is ok as it is. The comm_split is on 
> a different
> > communicator. 
> 
> 
> The communicator I am talking about is a communicator that is created 
> directly after the MTest_Init as follows:
> 
> MPI_Comm_dup(MPI_COMM_WORLD,&comm);
> 
> 
> 
> 
> > And a comm_free is called at the very end of the program if
> > comm != null. 
> 
> 
> I do not see this (at least not in mpich2-1.0.5p4). 
> Additionally IMHO it 
> would not make since to test it to be different from comm_null before 
> comm_free'ing it because if this comm would be comm_null, the 
> test would 
> completely fail because this comm is used to determine the 
> rank of every 
> process etc which is used further down in the algorithm.
> 
> 
> Actually, its a library of mine (that I link with the test) that 
> detected the communicator-leak. I first thought it was an error of my 
> library but finally I think that indeed there is a communicator-leak. 
> But of course, I might be overseeing something.
> 
> Thanks again in advance,
> 
> toon
> 
> 
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