Heat transfer example crashes with SST on Titan

Created by: keichi

Hi, I'm having trouble running the heat transfer example with SST engine on Titan. The example crashes after a dozens of timesteps. I'm using the current master of ADIOS2 (237f1be2).

Command

aprun -n 64 ./heatTransfer_write_adios2 ./heat_sst.xml foo 8 8 1000 1000 100 100 : -n 16 ./heatTransfer_read ./heat_sst.xml foo.bp bar 4 4

Config XML file (same as examples/heatTransfer/heat_sst_ffs.xml)

<?xml version="1.0"?>
<!-- Config XML file fo the
     - heatTransfer_write_adios2
     - heatTransfer_read
     executables in build/bin -->

<adios-config>

    <!--====================================
           Configuration for the Writer
        ====================================-->

    <io name="writer">
        <engine type="SST">
            <parameter key="MarshalMethod" value="FFS"/>
        </engine>
    </io>


    <!--======================================
           Configuration for the Reader Input
        ======================================-->

    <io name="readerInput">
        <engine type="SST">
            <parameter key="MarshalMethod" value="FFS"/>
        </engine>
    </io>


    <!--=======================================
           Configuration for the Reader output
        =======================================-->

    <io name="readerOutput">
        <engine type="BPFile">
        </engine>
    </io>

</adios-config>

stdout https://gist.github.com/keichi/73e4974403cd3f2dc5f4f8f3e0c4e1b9

stderr (SstVerbose=1) https://gist.github.com/keichi/9e5b9891e5124f9771c063acdb5976b5