Add option to record C++ backtraces in _record_memory_history (#86145)
I used this to debug https://github.com/pytorch/pytorch/issues/86136 so it is useful. The implementation is not so fast so it is not enabled by default.
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/86145
Approved by: https://github.com/albanD, https://github.com/zdevito
