[c10d] initialize lastEnqueuedSeq_ and lastCompletedSeq_ (#121980)
Summary:
It is found that this 2 unitilized number was logged with some super
large or negative numbers, which is confusing. So we need to initialize
them. Now -1 indicate the number if invalid, or no work is completed or
enqueued yet. 0 could be a legit seq id.
Test Plan:
Build
Tags:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/121980
Approved by: https://github.com/xw285cornell, https://github.com/wconstab, https://github.com/kwen2501, https://github.com/XilunWu
