message: [Mapper] try to make the mapper prefer the PS source for prefetch tasks
diff: @@ -573,9 +573,9 @@ void FFMapper::default_policy_select_sources(MapperContext ctx,
  if (!affinity.empty()) {
  assert(affinity.size() == 1);
  memory_bandwidth = affinity[0].bandwidth;
  - // Add 10 points to the bandwidth to prioritize preferred_memory
  + // Add 1000 points to the bandwidth to prioritize preferred_memory
  if (preferred_memory == location)
  - memory_bandwidth += 10;
  + memory_bandwidth += 1000;
  }
  source_memories[location] = memory_bandwidth;
  band_ranking[idx] =
  