I know this is difficult to believe, but Inspector XE 2016 (build 423441) reports only a maximum of 4 GB on its Collection Log tab.
I'm trying to debug a program that will use over 200 GB, and I'm looking at the Memory Used by Analysis Tool and Target Application. The Current memory usage started over at 0 after the program hit 4 GB, as did the graph.
For instance, right now, 'top' shows 4748m for the virtual memory size, and Inspector shows 652 MB. (652 + 4096 = 4748)
Inspector must be using unsigned int for the number of bytes, at least for reporting here. Doh!