NVIDIA/cuopt

GPU accelerated decision optimization

Stars: 1k
Forks: 233
Open beginner issues: 0
Indexed issues: 187
Avg merge: 4d 4h
Merged PRs (30d): 95

Dominant language: Cuda
License: Apache-2.0
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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187 open issues indexed

cuopt_mcp: warn/error when cuopt_solve_lp is given a model with integer/binary variables Open

awaiting response improvement

NVIDIA/cuopt#1942 · 1 assignee · Opened Sep 18, 2026
cuopt_mcp: add VRP/routing support Open

awaiting response feature request

NVIDIA/cuopt#1939 · 1 assignee · Opened Sep 18, 2026
[FEA] Support mGPU PDLP in C/Python/Java API Open

awaiting response feature request

NVIDIA/cuopt#1931 · 1 assignee · Opened Sep 17, 2026
Possible race: RINS worker incumbent size can mismatch leaf_problem.num_cols in branch_and_bound.cpp Open

bug mip

NVIDIA/cuopt#1909 · 5 comments · 1 assignee · Opened Sep 15, 2026
[BUG] Dual simplex logs an incorrect objective after a bound flip Open

bug

NVIDIA/cuopt#1893 · 1 comment · 1 assignee · Opened Sep 13, 2026
libcuopt_client links librmm for two symbols it never uses Open

awaiting response

NVIDIA/cuopt#1890 · 1 assignee · Opened Sep 11, 2026
[ci] switch to shared 'docs-build' matrix? Open

awaiting response

NVIDIA/cuopt#1887 · 1 assignee · Opened Sep 11, 2026
Remote log callback delivers no lines on the component-split branch (#1622) Open

awaiting response

Difficulty 4/5 3-5 days Newbie friendliness 52/100

NVIDIA/cuopt#1878 · 1 comment · Opened Sep 9, 2026
Package libcuopt_client separately so the gRPC client installs without CUDA Open

awaiting response

NVIDIA/cuopt#1872 · 1 assignee · Opened Sep 9, 2026
Add test coverage for warm-start target conversion paths Open

awaiting response

NVIDIA/cuopt#1867 · 1 assignee · Opened Sep 8, 2026
[NUMERICAL_ISSUES] Documented 3-variable convex QP returns NumericalError in cuDSS symbolic analysis Open

awaiting response

NVIDIA/cuopt#1861 · 1 comment · 1 assignee · Opened Sep 6, 2026
[FEA] PDLP warm start through presolve (today: warm start works only without presolve and loses 3x net) + silent-NaN failure modes Open

awaiting response

NVIDIA/cuopt#1860 · 1 comment · 1 assignee · Opened Sep 6, 2026
[BUG] Crossover fails with "A numerical error was encountered" on large LP (reproducible 2/2) Open

NVIDIA/cuopt#1859 · 1 comment · 1 assignee · Opened Sep 6, 2026
[FEA] Add an http proxy server that can run as a side car to the gRPC server for legacy API Open

awaiting response feature request

NVIDIA/cuopt#1852 · 3 comments · 1 assignee · Opened Sep 3, 2026
cuOpt.jl MOI wrapper: unhandled 'Invalid argument' from GetPrimalSolution/GetDualSolution fails 36 conformance tests every nightly run Open

awaiting response bug

NVIDIA/cuopt#1832 · 1 assignee · Opened Aug 31, 2026
Logger: stale config guard can reset a newer configuration, and resets sinks without the mutex Open

awaiting response bug

NVIDIA/cuopt#1831 · 1 assignee · Opened Aug 31, 2026
Include java-build in the PR test summary Open

awaiting response

NVIDIA/cuopt#1824 · 1 comment · 1 assignee · Opened Aug 28, 2026
java-build fails intermittently on Maven Central 429 rate limiting Open

awaiting response bug

NVIDIA/cuopt#1820 · 1 comment · 1 assignee · Opened Aug 28, 2026
[FEA] Publish self-contained Java classifier JARs with a statically linked libcuopt, as cuDF does Open

awaiting response

NVIDIA/cuopt#1817 · 2 comments · 1 assignee · Opened Aug 27, 2026
[FEA] Incremental ("delta") C API for warm-started LP resolves — proposal + implementation (presolve-off only) Open

NVIDIA/cuopt#1805 · 1 comment · 1 assignee · Opened Aug 26, 2026
[BUG] cuOptGetProblemStringArrayAttribute rejects a problem with no names instead of reporting it Open

awaiting response

NVIDIA/cuopt#1796 · 1 comment · 1 assignee · Opened Aug 25, 2026
Java bindings: evaluate replacing hand-written JNI with the Foreign Function & Memory API Open

awaiting response

NVIDIA/cuopt#1794 · 1 comment · 1 assignee · Opened Aug 25, 2026
[BUG] Flaky: DeterministicBB deterministic_across_runs/swath1_threads8 — run 3 diverges under work_limit Open

awaiting response bug

NVIDIA/cuopt#1793 · 1 comment · 1 assignee · Opened Aug 25, 2026
docs(fern): custom Python/C API doc generator Open

awaiting response

NVIDIA/cuopt#1791 · 1 comment · 1 assignee · Opened Aug 25, 2026
Give each component library its own logger Open

awaiting response

NVIDIA/cuopt#1790 · 1 comment · 1 assignee · Opened Aug 25, 2026
CI: report step timeouts explicitly, skip the test hitting them Open

awaiting response

NVIDIA/cuopt#1789 · 1 comment · 1 assignee · Opened Aug 25, 2026
Describe solver settings and defaults in the gRPC codegen field registry Open

awaiting response

NVIDIA/cuopt#1788 · 1 comment · 1 assignee · Opened Aug 25, 2026
Publish cuOpt wheels to Kitmaker Portal via Charon Ferry Open

awaiting response

NVIDIA/cuopt#1787 · 1 comment · 1 assignee · Opened Aug 25, 2026
Resolve NVSkills Tier 1 security findings in cuopt-server-api-python Open

awaiting response

NVIDIA/cuopt#1786 · 1 comment · 1 assignee · Opened Aug 25, 2026
[EPIC] cuOpt MCP server Open

awaiting response epic

NVIDIA/cuopt#1785 · 1 assignee · Opened Aug 25, 2026
[BUG] test_parser_and_batch_solver intermittently hangs inside LP BatchSolve on CUDA 13.3 Open

awaiting response bug

NVIDIA/cuopt#1781 · 1 comment · 1 assignee · Opened Aug 24, 2026
[BUG] Concurrent initial-clique publication can race during MIP solve Open

bug mip P1

NVIDIA/cuopt#1774 · 1 assignee · Opened Aug 24, 2026
[BUG] Papilo assertion failure on `INCUMBENT_CALLBACK_TEST` Open

bug

NVIDIA/cuopt#1771 · 1 assignee · Opened Aug 24, 2026
[BUG] Solve() aborts the process (OMP kmp_alloc assertion) when each solve runs on a freshly created thread Open

bug P1

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

NVIDIA/cuopt#1768 · 1 comment · Opened Aug 22, 2026
[BUG] CUDA 12 latest-deps wheel tests fail: pylibcudf/libcudf nightly ABI skew (undefined symbol read_parquet_column_chunk_bounds) Open

awaiting response bug

NVIDIA/cuopt#1765 · 1 comment · 1 assignee · Opened Aug 21, 2026
cuda_graph_t discards CUDA error codes, obscuring capture failures Open

awaiting response bug improvement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NVIDIA/cuopt#1758 · 1 comment · Opened Aug 20, 2026
[FEA] Decouple cuopt_mcp from the cuopt package so it ships as a pure-Python wheel Open

awaiting response

NVIDIA/cuopt#1755 · 1 comment · 1 assignee · Opened Aug 20, 2026
thirdparty cvxpy: build fails on oldest-deps/arm64 nightly configs — no wheel and no g++ in container Open

awaiting response bug dependencies

NVIDIA/cuopt#1747 · 2 comments · 1 assignee · Opened Aug 19, 2026
Pyomo cuOpt adapter: TypeError formatting _version aborts pytest collection (thirdparty pyomo, 12/12 nightly jobs) Open

awaiting response bug dependencies

NVIDIA/cuopt#1746 · 2 comments · 1 assignee · Opened Aug 19, 2026
Generate the routing gRPC field mapping from a single source of truth Open

awaiting response improvement

NVIDIA/cuopt#1730 · 1 comment · 1 assignee · Opened Aug 14, 2026
[BUG] cuOpt 26.8.0 CU13 build aborts on MIP solves while CU12 solves the same instance Open

awaiting response bug

NVIDIA/cuopt#1729 · 2 comments · 1 assignee · Opened Aug 14, 2026
[BUG] CUOPT_MIP_PRESOLVE is declared in constants.h but is not a registered parameter Open

awaiting response

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NVIDIA/cuopt#1728 · 1 comment · Opened Aug 14, 2026
Flaky: test_mip_incumbent_stream hangs in PROCESSING after the preceding cancel test kills the gRPC worker Open

awaiting response

NVIDIA/cuopt#1716 · 3 comments · 1 assignee · Opened Aug 13, 2026
[BUG] Python interface returns "lp_stats" for QP and SOCP problems Open

awaiting response bug

NVIDIA/cuopt#1710 · 1 comment · 1 assignee · Opened Aug 13, 2026
[BUG] Build-tree libcuopt.so resolves librmm from the conda prefix instead of its own _deps, failing at dlopen Open

awaiting response

NVIDIA/cuopt#1704 · 1 comment · 1 assignee · Opened Aug 12, 2026
[FEA] Expand cuopt_c.h with problem-model accessors for non-Python language bindings Open

awaiting response

NVIDIA/cuopt#1703 · 4 comments · 1 assignee · Opened Aug 12, 2026
[BUG] confusing "barrier finished" logging Open

awaiting response bug

NVIDIA/cuopt#1702 · 1 comment · 1 assignee · Opened Aug 12, 2026
Converge LP/MIP remote execution on the explicit-client pattern (remove remote-solve registry) Open

awaiting response

NVIDIA/cuopt#1692 · 2 comments · 1 assignee · Opened Aug 7, 2026
[BUG] segfault when writing MPS with an empty row Open

awaiting response bug

NVIDIA/cuopt#1663 · 2 comments · 1 assignee · Opened Aug 5, 2026
[BUG] Mid-solve job cancel of a job on the gRPC server can leave GPU in a sticky error state; full server restart required Open

awaiting response bug

NVIDIA/cuopt#1662 · 2 comments · 1 assignee · Opened Aug 4, 2026

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