NVIDIA/cudaqx

View on GitHub

Accelerated libraries for quantum-classical computing built on CUDA-Q.

Stars: 117
Forks: 74
Open beginner issues: 0
Indexed issues: 43
Avg merge: 2d 7h
Merged PRs (30d): 25

Dominant language: C++
License: No license data
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

43 open issues indexed

[Doc] Create docs for playback emulator Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

NVIDIA/cudaqx#835 · Opened Sep 17, 2026
Cleanup D ownership Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

NVIDIA/cudaqx#832 · Opened Sep 15, 2026
`nv-qldpc-decoder`: OSD construction fails when detectors × mechanisms exceeds 2^31 (suspected int32 overflow in workspace allocation) Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

NVIDIA/cudaqx#821 · 1 comment · Opened Sep 4, 2026
Add test coverage for detecting torch's presence Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

NVIDIA/cudaqx#734 · Opened Jul 22, 2026
Unify DEM sampling entry-point name across Python and C++ APIs Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

NVIDIA/cudaqx#718 · Opened Jul 21, 2026
Investigate the mismatch between ONNX IR versions in helper script and dev container Open

NVIDIA/cudaqx#717 · 1 assignee · Opened Jul 21, 2026
Add the HuggingFace example to CI Open

NVIDIA/cudaqx#716 · 1 assignee · Opened Jul 21, 2026
DEMs built with `qec.TwoQubitDepolarization` / `qec.TwoQubitBitFlip` silently omit all noise on the second qubit: the MSM disagrees with the sampler Open

Difficulty 4/5 3-5 days Newbie friendliness 72/100

NVIDIA/cudaqx#606 · 3 comments · Opened Jun 12, 2026
Follow-ups (sparse PCM / pcm_utils) Open

NVIDIA/cudaqx#582 · 1 assignee · Opened Jun 5, 2026
[Doc] Update user facing docs for DecoderResult python binding change Open

NVIDIA/cudaqx#572 · 1 assignee · Opened May 29, 2026
[Doc] Update user facing docs for BatchDecoderResult Open

NVIDIA/cudaqx#559 · 1 assignee · Opened May 21, 2026
Testing GitHub Integration with Exalate Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

NVIDIA/cudaqx#525 · 4 comments · Opened Apr 30, 2026
(Not user facing) Update realtime decoder build script to have -- build option Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

NVIDIA/cudaqx#493 · Opened Apr 8, 2026
Update CI to build hololink bridge Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

NVIDIA/cudaqx#492 · Opened Apr 8, 2026
Update CUDA-QX CI to run additional tests for realtime decoders Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

NVIDIA/cudaqx#491 · Opened Apr 8, 2026
Move graph_resources struct to forward declaration (without definition) into decoder.h Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

NVIDIA/cudaqx#476 · Opened Mar 30, 2026
[DOC] Update GQE doc to reflect v2 updates Open

documentation

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

NVIDIA/cudaqx#382 · Opened Dec 9, 2025
Add sliding window section in introduction and decoder example section Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

NVIDIA/cudaqx#364 · Opened Nov 19, 2025
Add Doxygen comments for decoder configuration YAML syntax Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

NVIDIA/cudaqx#358 · Opened Nov 15, 2025
Refine wording and style for documentation Open

documentation

Difficulty 3/5 1-2 days Newbie friendliness 20/100

NVIDIA/cudaqx#357 · Opened Nov 15, 2025
Consider creating UHF option in solvers.create_molecule Open

NVIDIA/cudaqx#355 · 1 assignee · Opened Nov 14, 2025
Refactor get_spin_hamiltonian() to adhere to the single responsibility principle Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

NVIDIA/cudaqx#315 · Opened Oct 6, 2025
Tensor Network Decoder Batch Processing Behavior Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

NVIDIA/cudaqx#296 · 2 comments · Opened Sep 16, 2025
Feature Request: Bond Dimension Cutoff for Tensor Network Decoder Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

NVIDIA/cudaqx#295 · 1 comment · Opened Sep 16, 2025
[Docs] Add/update description for multi_error_lut decoder Open

documentation

NVIDIA/cudaqx#284 · 1 comment · 1 assignee · Opened Sep 2, 2025
[Docs] Add an entry for GQE under Libraries/CUDA-Q Solvers Library Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

NVIDIA/cudaqx#273 · Opened Aug 21, 2025
[CI] Improve CI coverage for MPI testing Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NVIDIA/cudaqx#249 · Opened Jul 31, 2025
Adapt_h2.py example doesn't support MPI as wrriten Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

NVIDIA/cudaqx#248 · Opened Jul 31, 2025
GQE automatically parallelizes workload via MPI Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

NVIDIA/cudaqx#234 · 1 comment · 1 reaction · Opened Jul 24, 2025
[Docs] Add notes in the gqe h2 example on what user should do if they just want to run it on single node multi-GPU Open

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

NVIDIA/cudaqx#229 · Opened Jul 22, 2025
[CI] Improve optional python modules' dependencies negative test on CI Open

NVIDIA/cudaqx#225 · 1 assignee · Opened Jul 22, 2025
[Docs] Add documentation for GQE on how to resume training or load pre-trained models Open

Difficulty 3/5 1-2 days Newbie friendliness 20/100

NVIDIA/cudaqx#223 · Opened Jul 21, 2025
Inconsistency in docs vs implementation: `sample_memory_circuit` return value Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

NVIDIA/cudaqx#221 · Opened Jul 20, 2025
Make a version of `dump_bits` that returns a string instead of dumping to stdout. Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

NVIDIA/cudaqx#197 · Opened Jun 30, 2025
Add flag to nv-qldpc-decoder for triple bit flip checks Open

Difficulty 3/5 1-2 days Newbie friendliness 20/100

NVIDIA/cudaqx#170 · Opened May 20, 2025
Allow users to specify shots for cudaq_solvers.qaoa Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

NVIDIA/cudaqx#148 · Opened Apr 24, 2025
Bravyi Kitaev producing incorrect energies Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

NVIDIA/cudaqx#118 · Opened Mar 10, 2025
More descriptive error handling for API calls Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

NVIDIA/cudaqx#59 · Opened Jan 24, 2025
Retrieve intermediate adapt vqe information. Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

NVIDIA/cudaqx#26 · 1 comment · Opened Dec 10, 2024
Add more state preparation kernels Open

enhancement good first issue

NVIDIA/cudaqx#12 · 1 comment · 2 assignees · Opened Nov 25, 2024
cudaq.kernels supported by hardware-efficient ansatz Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 48/100

NVIDIA/cudaqx#514 · 2 comments · Opened Nov 25, 2024
Python API Documentation & Typing Open

bug documentation

NVIDIA/cudaqx#5 · 2 comments · 1 reaction · 3 assignees · Opened Nov 21, 2024
Implement more fermion_compiler subtypes Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

NVIDIA/cudaqx#1 · Opened Nov 19, 2024

NVIDIA/cudaqx

Get new issues in your inbox