[Dune] [#838] memory leak in parallel yaspgrid communicator (Attachment added)

[Dune]

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User who did this - Nagaiah (nagaiah) 

Attached to Project - Dune
Summary - memory leak in parallel yaspgrid communicator
Task Type - Bug Report
Category - Grid
Status - Unconfirmed
Assigned To - 
Operating System - Unspecified / All
Severity - Medium
Priority - Normal
Reported Version - SVN (pre2.1)
Due in Version - Undecided
Due Date - Undecided
Details - It seems there is a memory leak in yaspgrid communicator. 
For test case, I am running the "nonlineardiffusion.cc" code in pdelab-howto.
This happens only when number of processors are 4 or more. there is no memory leak
if it runs sequentially or less than 4 processors. The valgrind output log file is
attached. I am using the following command to produce that output file.
Tested with current SVN version.

mpiexec -np 4 /usr/bin/valgrind --leak-check=full --trace-children=yes --log-file=output.txt ./nonlineardiffusion 1

It seems the source of bug triggers at line number 3043 in yaspgrid.hh, but I am not sure.

One or more files have been attached.

More information can be found at the following URL:
http://www.dune-project.org/flyspray/index.php?do=details&task_id=838

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