CUDA-Q

The 0.7.1 release adds bug fixes, slightly changes the Python wheel installation instructions, and adds simulator optimizations to our prior 0.7.0 release. The nvidia-mgpu backend now supports user customization of the gate fusion level as controlled by the CUDAQ_MGPU_FUSE environment variable documented here.

What's Changed

Features and Enhancements 🎉

• Perf. improvement for CuStateVecCircuitSimulator::observe by @1tnguyen in https://github.com/NVIDIA/cuda-quantum/pull/1002
• Introduce pauli_word and expose to Python by @amccaskey in https://github.com/NVIDIA/cuda-quantum/pull/1382
• Make spin_op.distribute_terms batch more efficiently by @bmhowe23 in https://github.com/NVIDIA/cuda-quantum/pull/1437
• MPS backend to support gates on 3+ qubits by @1tnguyen in https://github.com/NVIDIA/cuda-quantum/pull/1420
• Add optimized applyExpPauli to nvidia-mgpu by @bmhowe23 in https://github.com/NVIDIA/cuda-quantum/pull/1559
• Optimize kernel mode for hybrid QNN test case by @bmhowe23 in https://github.com/NVIDIA/cuda-quantum/pull/1572

Bug Fixes 🐛

• Fixing issue with sample_async failing on machines with multiple GPUs by @1tnguyen in https://github.com/NVIDIA/cuda-quantum/pull/1379
• Enable list[T] argument specification in kernel builder by @amccaskey in https://github.com/NVIDIA/cuda-quantum/pull/1370
• Fix synthesis of vectors with small integers. by @schweitzpgi in https://github.com/NVIDIA/cuda-quantum/pull/1395
• Fix compilation issue for std::vector in some cases by @schweitzpgi in https://github.com/NVIDIA/cuda-quantum/pull/1402
• Fixing incorrect error for synthesis of callables by @schweitzpgi in https://github.com/NVIDIA/cuda-quantum/pull/1398
• Fix memory leak in CuStateVecCircuitSimulator.cu by @bmhowe23 in https://github.com/NVIDIA/cuda-quantum/pull/1424
• Fix issue when passing np.ndarray to Python kernels by @amccaskey in https://github.com/NVIDIA/cuda-quantum/pull/1406
• Fix Python handling of kernel list parameters by @bmhowe23 in https://github.com/NVIDIA/cuda-quantum/pull/1410
• Fix issue with spin_op result retrieval by @1tnguyen in https://github.com/NVIDIA/cuda-quantum/pull/1440
• Handling empty lists passed to Python kernels by @amccaskey in https://github.com/NVIDIA/cuda-quantum/pull/1438
• Fix issue where qubits are retained with draw / tracer by @amccaskey in https://github.com/NVIDIA/cuda-quantum/pull/1457
• Fix issue caused by docstrings inside Python kernels by @amccaskey in https://github.com/NVIDIA/cuda-quantum/pull/1459
• Improved error handling and bug fixes for Python by @amccaskey in https://github.com/NVIDIA/cuda-quantum/pull/1458
• Fix issue with cnot operation not being properly compiled for some targets by @schweitzpgi in https://github.com/NVIDIA/cuda-quantum/pull/1466
• Simplify MLIR code generated for simple Python for loops over range(N) by @amccaskey in https://github.com/NVIDIA/cuda-quantum/pull/1470
• Fix Python wheel installation issues (multiple subtlety linked items) by @bmhowe23 in https://github.com/NVIDIA/cuda-quantum/pull/1493
• Fix observe() calls on nvidia-mgpu backend by @bmhowe23 in https://github.com/NVIDIA/cuda-quantum/pull/1494
• Fix issue with unknown base on attribute call (throw an error) by @amccaskey in https://github.com/NVIDIA/cuda-quantum/pull/1499
• Fix QPUD Library Mode Installer Build by @1tnguyen in https://github.com/NVIDIA/cuda-quantum/pull/1435

Breaking Changes 🛠

• [c++17] changes to cudaq headers for pure c++17 environment by @schweitzpgi in https://github.com/NVIDIA/cuda-quantum/pull/1468

Documentation Updates ✏️

• Documentation for NVQC by @1tnguyen in https://github.com/NVIDIA/cuda-quantum/pull/1412
• Python documentation for kernel construction by @khalatepradnya in https://github.com/NVIDIA/cuda-quantum/pull/1417

Other Changes

• Adds the ability to pass vector<bool> values to kernels as input by @schweitzpgi in https://github.com/NVIDIA/cuda-quantum/pull/1404
• Add support for recently introduced cudaq::range(a,b,c) function. by @schweitzpgi in https://github.com/NVIDIA/cuda-quantum/pull/1476

Release created by workflow 9094817952.<br/>GitHub commit 1f8dd79d46cad9b9bd0eb220eb04408a2e6beda4

<!-- Release notes generated using configuration in .github/release.yml at 1f8dd79d46cad9b9bd0eb220eb04408a2e6beda4 -->

Full Changelog: https://github.com/NVIDIA/cuda-quantum/compare/0.7.0...9094817952