pytorch

1c83888b - [memory profiling] show pre-existing memory in trace_plot (#97590)

[memory profiling] show pre-existing memory in trace_plot (#97590) Previously we only plotted memory if it was allocated or freed while trace recording was active. This change also adds any pre-existing blocks to the visualization. This helps because it is common to enable trace recording later and then not realize that there is a lot of allocated memory in the trace eventhough a lot was allocated beforehad. Pull Request resolved: https://github.com/pytorch/pytorch/pull/97590 Approved by: https://github.com/eellison