Qiskit / qiskit / 9100255975

88%

Build Type

push

github

Committed by web-flow

Commit Message

Fix unnecessary serialisation of `PassManager` in serial contexts (#12410)

* Fix unnecessary serialisation of `PassManager` in serial contexts

This exposes the interal decision in `parallel_map` of whether to
actually run in serial or not.  If not, there's no need for
`PassManager` to side-car its `dill` serialisation onto the side of the
IPC (we use `dill` because we need to pickle lambdas), which can be an
unfortunately huge cost for certain IBM pulse-enabled backends.

* Remove new function from public API

This makes the patch series safe for backport to 1.1.

Run Details

12 of 12 new or added lines in 3 files covered. (100.0%)

41 existing lines in 5 files now uncovered.

62287 of 69520 relevant lines covered (89.6%)

233026.73 hits per line