Christopher Hogan

# Current changes required to convert an MPI app to a native Hermes app 1. Request `MPI_THREAD_MULTIPLE` support. This is only required if the app isn't already doing it, and...

Goals: 1. Don't force user to specify metadata size. 2. Allow metadata to grow dynamically instead of choosing a constant size up front. Tasks: 1. Split metadata into its own...

Currently we run all automated tests with MPICH. It would be good to also test OpenMPI to make sure we aren't relying on any implementation details of either.

By default the `Trait` callbacks `Attach` and `Detach` only apply to future linked Blobs. We should provide a flag that, if `true`, should apply the trait to all existing linked...

In the context of a write-only, stdio adapter workload, we want to be able to tag a `Blob` as `DONT_NEED` so that after it gets asynchronously flushed, it is deleted...

Currently we skip async flushing of swap blobs. There's no reason it shouldn't work, but it's not tested yet.

Set up Hermes performance regression testing

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Created from JIRA [HERM-4](https://jira.hdfgroup.org/browse/HERM-4)

Created from JIRA [HERM-82](https://jira.hdfgroup.org/browse/HERM-82)

User gives an ID for each `Blob`, and/or a comparator function. This will be needed for the prefetcher.