Right that's what I was talking about though. I mentioned spark and flink in my original comment. Spark makes different assumptions about the computers than wh

Right that's what I was talking about though. I mentioned spark and flink in my original comment. Spark makes different assumptions about the computers than what MPI does. "HPC" is 99% of the time some variant of MPI with some sort of special hardware interconnect like infiniband. It's just in general a different software stack with different assumptions. Like I said- I work on gpu stuff for the JVM as well, the assumption is different with how the cluster is expected to be setup though.