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Elior Nataf Lackritz
89ff2d33de
Exit durability stores a run's delta writes on the checkpoint it started from, under step-prefixed task ids. When that checkpoint already held writes (a resume after a parallel interrupt), the accumulator stored the loaded writes a second time, so every later read replayed them twice. Skipping them alone is not enough: the loaded writes keep their real task ids, which sort after the step-prefixed ones. Store the checkpoint's own superstep as sync durability does (real task id and path), so it interleaves with the loaded writes by task path, and give later supersteps a task path that sorts after every real one, in step order. Savers that take no task path keep the previous encoding.