Get Deltakit Stim working with Sinter to simulate leakage errors?

Get Deltakit Stim working with Sinter to simulate leakage errors? Ask Question Asked 16 days ago Modified 14 days ago Viewed 105 times 2 I'm trying to use Riverlane's newly released Deltakit-Stim (a fork of Stim which includes functionality to simulate leakage errors) to simulate leakage errors but am struggling to get it to work with Stim's circuit sampler Sinter. If I do: import deltakit_stim import sinter It breaks - gives: ImportError: generic_type: type "DemInstruction" is already registered! This can be temporarily fixed with: import sys import deltakit_stim injections = ['stim._detect_machine_architecture', 'stim._stim_polyfill', 'stim'] for namespace in injections: sys.modules[namespace] = sys.modules[f"deltakit_{namespace}"] import sinter Until I try to use sinter.collect(), for example (just using the in-built surface code circuit, not containing leakage instructions yet): import sys import deltakit_stim injections = ['stim._detect_machine_architecture', 'stim._stim_polyfill', 'stim'] for namespace in injections: sys.modules[namespace] = sys.modules[f"deltakit_{namespace}"] # setting the stim one equal to the deltakit_stim one import sinter import multiprocessing from stimbposd import BPOSD, SinterDecoder_BPOSD p = 1e-3 memory_basis = 'z' circuit = deltakit_stim.Circuit.generated( f"surface_code:rotated_memory_{memory_basis}", rounds=9, distance=3, after_clifford_depolarization=p) tasks = [ sinter.Task( circuit = circuit, json_metadata = { "p": p, "b": memory_basis } )] samples = sinter.collect( num_workers=multiprocessing.cpu_count(), max_shots=1000, print_progress = True, max_errors=10, tasks = tasks, decoders=['bposd'], custom_decoders = { "bposd": SinterDecoder_BPOSD( max_bp_iters = 10_000, bp_method = "min_sum", osd_method = "osd_cs", osd_order = 5 ) }, ) Then I will get the error: ValueError: Worker failed: traceback=Traceback (most recent call last): File "/opt/homebrew/lib/python3.11/site-packages/sinter/_collection/_collection_worker_state.py", line 243, in run_message_loop num_messages_processed = self.process_messages() ^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/homebrew/lib/python3.11/site-packages/sinter/_collection/_collection_worker_state.py", line 160, in process_messages message = self.inp.get_nowait() ^^^^^^^^^^^^^^^^^^^^^ File "/opt/homebrew/Cellar/python@3.11/3.11.13/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/queues.py", line 135, in get_nowait return self.get(False) ^^^^^^^^^^^^^^^ File "/opt/homebrew/Cellar/python@3.11/3.11.13/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/queues.py", line 122, in get return _ForkingPickler.loads(res) ^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/homebrew/lib/python3.11/site-packages/deltakit_stim/__init__.py", line 19, in <module> from deltakit_stim._stim_polyfill import * ImportError: generic_type: type "DemInstruction" is already registered!``` stimstabilizer-codesinterleakage Share Improve this question Follow asked May 20 at 7:47 drumadoir 3671 1 silver badge 7 7 bronze badges It seems this project ships its own version of sinter (deltakit-stim/glue/sample). I am not sure if it differs from the default Pypi's one, but it is worth a shot. With pip, you can install a local library with pip install relevant/path/to/glue/sample if you have cloned their repository. –  AG47 Commented May 21 at 16:20 Add a comment 1 Answer Sorted by: Highest score (default) Date modified (newest first) Date created (oldest first) 2 I am one of the maintainers of deltakit-stim. First of all thank you for your interest in trying it out really. This incompatibility is a known issue to us and we will try internally to fix it so this is under our radar. In the meantime here are some hints on how to make it work with stim/sinter: Move deltakit-stim import ahead of stim, and book its place: # these lines may go inside `deltakit_stim/__init__.py` import deltakit_stim import sys sys.modules["stim"] = deltakit_stim # or if inside `deltakit_stim` this probably should work sys.modules["stim"] = sys.modules[__name__] import stim, sinter # will go well If stim is already present, adding a check may be helpful. Smtg like: try: import deltakit_stim except ImportError as ierr: if "DemInstruction" in ierr.message: raise ImportError("Known issue, please import deltakit_stim first") from ierr else: raise For your question specifically, wrap your code in if __name__ == "__main__": ... should help. Share Improve this answer Follow answered May 21 at 17:27 Rolandriver 361 1 bronze badge 1 Thank you! Turns out trying to run it just in a jupyter notebook while I was troubleshooting was causing issues too. So I put import deltakit_stim import sys sys.modules["stim"] = deltakit_stim inside a python file as well as if __name__ == "__main__": and it's running with sinter! I have asked another question here: quantumcomputing.stackexchange.com/questions/46277/… –  drumadoir Commented May 25 at 11:49 Add a comment Your Answer Sign up or log in Sign up using Google Sign up using Email and Password Post as a guest Name Email Required, but never shown Post Your Answer By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy. Start asking to get answers Find the answer to your question by asking. Ask question Explore related questions stimstabilizer-codesinterleakage See similar questions with these tags. The Overflow Blog What it takes to be a player in the international AI... Making the OWASP top ten in the vibe code... 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