Hayk Stepanyan

> which datasets has this been tested on? I tested this on gerrard-hall-100 and skydio-32 datasets. We already use futures for [corresponder generator images](https://github.com/borglab/gtsfm/blob/45f0e1b5446c3bc36e4daffc2458361caa4cba51/gtsfm/runner/gtsfm_runner_base.py#L305). This PR also makes it more...

> @stepanyanhayk is there any performance implication from this? When running on cluster, I was seeing data reading errors (happening nondeterministically), using futures in all places for data reading seems...

> Thanks for the PR, Hayk. Could you describe a bit more about how this PR cleans up the Process Graphs we are generating? Hi @johnwlambert, I guess my wording...