message: Add a note on todo in bcast
diff: @@ -61,7 +61,9 @@ namespace ospray {
  // TODO: We don't want to re-use the MPIOffload fabric because it's
  // an intercommunicator between the app/worker groups and thus will
  // only support bcast from master -> workers, not the workers <-> workers
  - // style communication we want here.
  + // style communication we want here. Is it best to just create
  + // a fabric each time? Or have some other fabric we save statically?
  + // The distributed device doesn't have a fabric in it by default either.
  mpicommon::MPIBcastFabric fabric(mpicommon::world, rootGlobalRank);
  if (mpicommon::globalRank() == rootGlobalRank) {
  networking::BufferedWriteStream stream(fabric);
  