Severe Memory Leak with 2019 impi

Both 2019 impi releases have a severe memory leak which goes away when I regress to the 2015 version (i.e. source /opt/intel/comp2015/impi/5.0.2.044/intel64/bin/mpivars.sh). I am attaching two valgrind outputs, lapw1.vg.285276 from 2019 impi and lapw1.vg.5451 from 2015 impi which show it quite clearly.

For reference, the entries in the valgrind logs with "init_parallel_ (in /opt/Wien2k_18.1F/lapw1Q_mpi)" are the mpi initialization, so these are almost certainly not real as the initialization is only done once. The entries associated with the scalapack pdsygst call are probably the culprit.

If needed I can provide a package to reproduce this. It is part of a large code, so decomposing into a small test code is not feasible.