2a7ca101d7
Sparse-checkout from NVIDIA/cccl main branch to complete cccl_upstream: Added: - python/cuda_cccl/ (226 files) — Python bindings for device-level algorithms Critical for muh toolchain: cuda.compute.reduce_into, scan, radix_sort, etc. Includes 204 .py files with full test coverage for all 27 algorithms - ci/ (163 files) — Build/test infrastructure build_cub.sh, test_cub.sh, build_and_test_targets.sh, matrix.yaml Directly maps to our [INFRA-CI] and [INFRA-BUILD] items - .agent/skills/ (7 files) — NVIDIA's own agent skills for CCCL cccl-style/SKILL.md, cccl-test/SKILL.md, sass-diff/SKILL.md - docs/ (491 files) — Official CCCL documentation CI references, CMake guides, Python compute docs, libcudacxx PTX docs - test/ (12 files) — Top-level integration tests (cuda_smoke, stdpar) - Root configs: .clang-format, .clang-tidy, CONTRIBUTING.md, pyproject.toml - CLAUDE.md symlink → AGENTS.md (NVIDIA's standard) cccl_upstream now mirrors full NVIDIA/cccl structure: Before: 42M (cub + thrust + libcudacxx + cudax + c + examples + benchmarks) After: 53M (+python +ci +docs +.agent +test +configs) This completes the CCCL base needed for: - [muh-bench] items: ci/util/build_and_test_targets.sh for targeted builds - [CCCL-verify] items: python/cuda_cccl/tests/ as reference implementations - [CCCL-test] items: ci/test_cub.sh, ci/test_thrust.sh - Agent workflow: .agent/skills/ for consistent style and test patterns
35 lines
1.2 KiB
ReStructuredText
35 lines
1.2 KiB
ReStructuredText
.. _libcudacxx-extended-api-exceptions:
|
|
|
|
Exception Handling
|
|
==================
|
|
|
|
Standard C++ exception handling (``try``, ``catch``, ``throw``) is not supported in CUDA device code, while it is enabled by default in host code.
|
|
|
|
**Device code**
|
|
|
|
``libcu++`` maps exceptions to ``cuda::std::terminate()`` calls in device code, which translates to ``__trap()`` and terminates the kernel.
|
|
|
|
**Host code**
|
|
|
|
``libcu++`` allows users to manually disable exceptions in host code in two ways:
|
|
|
|
- By defining ``CCCL_DISABLE_EXCEPTIONS`` before including any library headers.
|
|
- By compiling with ``-fno-exceptions`` compiler flag with ``gcc`` or ``clang``, or ``/EH-`` compiler flag with ``msvc``.
|
|
|
|
If exceptions are disabled, a ``throw`` exception is translated into a `cuda::std::terminate() <https://en.cppreference.com/w/cpp/error/terminate.html>`__ call, which terminates the program.
|
|
|
|
``cuda::cuda_error``
|
|
--------------------
|
|
|
|
Exception class thrown when a CUDA error is encountered. It inherits from ``std::runtime_error``.
|
|
|
|
.. code-block:: cpp
|
|
|
|
class cuda_error : public std::runtime_error
|
|
{
|
|
public:
|
|
cuda_error(cudaError_t status, const char* msg);
|
|
|
|
cudaError_t status() const noexcept;
|
|
};
|