Bug Report: MPI_Comm_free does not delete attributes

[jcrean]

I believe I found a bug in IntelMPI 2021.3. A call to MPI_Comm_free() does not cause the deleter function for attributes to be called if there is a non-blocking operation in progress. The MPI 3.1 standard specifies that the deleter should be called from MPI_Comm_free (Section 6.4.3, page 248, lines 26-27).

I tested OpenMPI 4.0, MPICH 3.2, and IntelMPI 2018.4, and they all call the deleter as expected.

I have a minimal reproducible example, but my post gets flagged as spam if I include it.  Is there some other way to post it?

[HemanthCH_Intel]

Hi,

Thank you for posting in Intel Communities.

Since this is a duplicate thread of "https://community.intel.com/t5/Intel-oneAPI-HPC-Toolkit/Bug-Report-MPI-Comm-attribute-deleter-not-called/m-p/1373444#M9376", we will no longer monitor this thread. We will continue addressing this issue in the other thread.

Thanks & Regards,

Hemanth