🐛 Empty charge_distributions in QuickExact-Simulation

[contra-bit]

fiction version

0.6.8

OS

Ubuntu 24.10

Python version

3.12.7

C++ compiler

g++ (Ubuntu 14.2.0-4ubuntu2) 14.2.0

Additional environment information

I have activated the virtual environment (.venv) using uv before running the notebook. I would appreciate any help in resolving this issue.

Please let me know if you need any further information or if there's anything else I can provide to help resolve this issue. @Drewniok

Description

I am experiencing an issue with the "sidb_gate_designs_and_analysis" notebook from the repository https://github.com/cda-tum/mnt-sidb-technology-demo. The "charge_distributions" of the QuickExact-Simulation are empty.

I am using the following versions:

• pyfiction: mnt-pyfiction==0.6.8
• Python: 3.12.7
• uv: 0.4.30

Expected behavior

Expected result: The "charge_distributions" of the QuickExact-Simulation should not be empty.

Actual result: The "charge_distributions" of the QuickExact-Simulation are empty.

How to Reproduce

Steps to reproduce:

1. Clone the repository https://github.com/cda-tum/mnt-sidb-technology-demo
2. Activate the virtual environment (.venv)
3. Run the "sidb_gate_designs_and_analysis" notebook

[contra-bit]

I have also tried installing pyfiction from the master branch

[Drewniok]

Hi @contra-bit,

Thank you for your detailed bug report. We are looking into it and come back to you as soon as possible.

[wlambooy]

Hi @contra-bit, I cannot reproduce the issue on Ubuntu 24.04 running the commands in a Python interpreter (3.13.0) after installing the bindings with uv (version 0.5.31).

Can you tell me: does the ground state for input 00 show up like it should?

[wlambooy]

[contra-bit]

AFAIK no since it crashes before.

[contra-bit]

I have checkout your test branch and run the tests with nox. I have lots of test failures.

log2.txt

[contra-bit]

Also for some strange reason lots of more tests failed before i ran sudo apt install libtinyxml2-dev, which is strange since tinyxm2 is vendored
in libs

log.txt

[wlambooy]

I have checkout your test branch and run the tests with nox. I have lots of test failures.

log2.txt

What branch is that?

[wlambooy]

Also for some strange reason lots of more tests failed before i ran sudo apt install libtinyxml2-dev, which is strange since tinyxm2 is vendored in libs

log.txt

I'm getting this too locally. We're not sure what causes it.

[contra-bit]

I have checkout your test branch and run the tests with nox. I have lots of test failures.
log2.txt

What branch is that?
I checkout the branch for the PR with this trick:

git fetch origin pull/668/head:pr-668    
git checkout pr-668

These are the only two commits which where added:

commit 93e23767f1508b69ded8578cfdb630891eb122a4 (HEAD -> pr-668)
Author: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date:   Thu Feb 13 14:50:37 2025 +0000

    🎨 Incorporated pre-commit fixes

commit bf1c28bd5c0f4de5391a5f810b812975c26de480
Author: wlambooy <[email protected]>
Date:   Thu Feb 13 15:47:19 2025 +0100

    :snake: Added test for issue #667

[contra-bit]

🤔 Do these tests fail only for me? 🤷‍♂️

• 📝 bindings/mnt/pyfiction/test/algorithms/physical_design/test_design_sidb_gates.py:
  • ❌ TestDesignSiDBGates::test_nor_gate_111
  • ❌ TestDesignSiDBGates::test_nor_gate_111_quickcell
  • ❌ TestDesignSiDBGates::test_siqad_and_gate_skeleton_100
• 📊 bindings/mnt/pyfiction/test/algorithms/simulation/sidb/test_can_positive_charges_occur.py:
  • ❌ TestCanPositiveChargesOccur::test_three_DBs_100_lattice
  • ❌ TestCanPositiveChargesOccur::test_three_DBs_111_lattice
• 📈 bindings/mnt/pyfiction/test/algorithms/simulation/sidb/test_critical_temperature.py:
  • ❌ TestCriticalTemperature::test_bestagon_inv
  • ❌ TestCriticalTemperature::test_perturber_and_DB_pair_100
  • ❌ TestCriticalTemperature::test_perturber_and_DB_pair_111
• 🔄 bindings/mnt/pyfiction/test/algorithms/simulation/sidb/test_exhaustive_ground_state_simulation.py:
  • ❌ TestExhaustiveGroundStateSimulation::test_perturber_and_sidb_pair
  • ❌ TestExhaustiveGroundStateSimulation::test_perturber_and_sidb_pair_111
• 📊 bindings/mnt/pyfiction/test/algorithms/simulation/sidb/test_is_ground_state.py:
  • ❌ TestIsGroundState::test_three_DBs_100_lattice
  • ❌ TestIsGroundState::test_three_DBs_111_lattice
• 🤖 bindings/mnt/pyfiction/test/algorithms/simulation/sidb/test_is_operational.py:
  • ❌ TestIsOperational::test_and_gate_111_lattice_11_input_pattern
  • ❌ TestIsOperational::test_and_gate_111_lattice_operational_input_pattern
  • ❌ TestIsOperational::test_and_gate_kinks
  • ❌ TestIsOperational::test_and_gate_non_operational_due_to_kinks
  • ❌ TestIsOperational::test_and_gate_non_operational_input_patterns_due_to_kinks
  • ❌ TestIsOperational::test_is_operational
• 📈 bindings/mnt/pyfiction/test/algorithms/simulation/sidb/test_operational_domain.py:
  • ❌ TestOperationalDomain::test_and_gate_111_lattice
  • ❌ TestOperationalDomain::test_critical_temperature_domain_xor_gate_100_lattice
  • ❌ TestOperationalDomain::test_xor_gate_100_lattice
• 📊 bindings/mnt/pyfiction/test/algorithms/simulation/sidb/test_operational_domain_ratio.py:
  • ❌ TestComputeOperationalRatioAtPoint::test_and_gate_100_lattice
• 📊 bindings/mnt/pyfiction/test/algorithms/simulation/sidb/test_physical_population_stability.py:
  • ❌ TestAssessPhysicalPopulationStability::test_three_DBs_100_lattice
  • ❌ TestAssessPhysicalPopulationStability::test_three_DBs_111_lattice
• 🔄 bindings/mnt/pyfiction/test/algorithms/simulation/sidb/test_quickexact.py:
  • ❌ TestQuickExact::test_perturber_and_sidb_pair_111
• 🔄 bindings/mnt/pyfiction/test/algorithms/simulation/sidb/test_quicksim.py:
  • ❌ TestQuicksim::test_perturber_and_sidb_pair
  • ❌ TestQuicksim::test_perturber_and_sidb_pair_111
• 📝 bindings/mnt/pyfiction/test/technology/test_charge_distribution_surface.py:
  • ❌ TestChargeDistributionSurface::test_initialization_111_lattice
• 📊 bindings/mnt/pyfiction/test/technology/test_sidb_nm_distance.py:
  • ❌ TestSiDBNmDistance::test_sidb_nm_distance_100_lattice
  • ❌ TestSiDBNmDistance::test_sidb_nm_distance_111_lattice