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EngineX CI 56fd68e7dd [INFRA] Import NVIDIA/CCCL upstream as optimization reference library
CCCL (CUDA C++ Core Libraries) provides:
- CUB: device/block/warp-level GPU primitives (reduce, scan, sort, topk)
- Thrust: high-level parallel algorithms (transform_reduce, sort, scan)
- libcudacxx: CUDA C++ standard library (atomics, barriers, memory)
- cudax: experimental features (memory resources, allocators)
- Tuning policies: per-SM hardware-specific algorithm parameters

Competition optimization vectors mapped to CCCL:
- Output TPS (83% weight): warp_reduce, block_reduce, device_topk
- Input TPS (14% weight): device_scan, block_load, prefetch
- Cache TPS (3% weight): prefix caching strategy patterns
- Memory (0.9 util): pooled/cached/buddy allocators

Source: https://github.com/NVIDIA/cccl (shallow clone, HEAD only)
License: Apache-2.0
2026-07-30 09:35:51 +00:00

32 lines
1.5 KiB
CMake

# GCC 7 has issues with capturing lambdas in non-CUDA backends triggering unused parameter warnings
# in libcudacxx's __destroy_at. Disable this example for GCC 7.
if (
"GNU" STREQUAL "${CMAKE_CXX_COMPILER_ID}"
AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8
)
set_target_properties(${example_target} PROPERTIES EXCLUDE_FROM_ALL TRUE)
set_tests_properties(${example_target} PROPERTIES DISABLED TRUE)
return()
endif()
target_compile_options(
${example_target}
PRIVATE $<$<COMPILE_LANG_AND_ID:CUDA,NVIDIA>: --extended-lambda>
)
# This check is actually not correct, because we must check the host compiler, not the CXX compiler.
# We rely on these usually being the same ;)
if (
"Clang" STREQUAL "${CMAKE_CXX_COMPILER_ID}"
AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 13
)
# When clang >= 13 is used as host compiler, we get the following warning:
# nvcc_internal_extended_lambda_implementation:312:22: error: definition of implicit copy constructor for '__nv_hdl_wrapper_t<false, true, false, __nv_dl_tag<void (*)(), &TestAddressStabilityLambda, 2>, int (const int &)>' is deprecated because it has a user-declared copy assignment operator [-Werror,-Wdeprecated-copy]
# 312 | __nv_hdl_wrapper_t & operator=(const __nv_hdl_wrapper_t &in) = delete;
# | ^
# Let's suppress it until NVBug 4980157 is resolved.
target_compile_options(
${example_target}
PRIVATE $<$<COMPILE_LANG_AND_ID:CUDA,NVIDIA>: -Wno-deprecated-copy>
)
endif()