Files
nvbench/cmake/NVBenchNVML.cmake
Allison Piper 60761e0946 Enable extra NVBench features in windows build. (#169)
* Enable extra NVBench features in windows build.

These were delayed as they required changes to the devcontainers.

* Revamp nvml.dll logic.
2024-04-10 13:45:53 -04:00

44 lines
1.8 KiB
CMake

# Since this file is installed, we need to make sure that the CUDAToolkit has
# been found by consumers:
if (NOT TARGET CUDA::toolkit)
find_package(CUDAToolkit REQUIRED)
endif()
if (WIN32)
# The CUDA:: targets currently don't provide dll locations through the
# `IMPORTED_LOCATION` property, nor are they marked as `SHARED` libraries
# (they're currently `UNKNOWN`). This prevents the `nvbench_setup_dep_dlls`
# CMake function from copying the dlls to the build / install directories.
# This is discussed in https://gitlab.kitware.com/cmake/cmake/-/issues/22845
# and the other CMake issues it links to.
#
# We create a nvbench-specific target that configures the nvml interface as
# described here:
# https://gitlab.kitware.com/cmake/cmake/-/issues/22845#note_1077538
#
# Use find_file instead of find_library, which would search for a .lib file.
# This is also nice because find_file searches recursively (find_library
# does not) and some versions of CTK nest nvml.dll several directories deep
# under C:\Windows\System32.
find_file(NVBench_NVML_DLL nvml.dll
DOC "The full path to nvml.dll. Usually somewhere under C:/Windows/System32."
PATHS "C:/Windows/System32"
)
mark_as_advanced(NVBench_NVML_DLL)
endif()
if (NVBench_NVML_DLL)
add_library(nvbench::nvml SHARED IMPORTED)
target_link_libraries(nvbench::nvml INTERFACE CUDA::toolkit)
set_target_properties(nvbench::nvml PROPERTIES
IMPORTED_LOCATION "${NVBench_NVML_DLL}"
IMPORTED_IMPLIB "${CUDA_nvml_LIBRARY}"
)
elseif(TARGET CUDA::nvml)
add_library(nvbench::nvml ALIAS CUDA::nvml)
else()
message(FATAL_ERROR "Could not find nvml.dll or CUDA::nvml target. "
"Set -DNVBench_ENABLE_NVML=OFF to disable NVML support "
"or set -DNVBench_NVML_DLL to the full path to nvml.dll on Windows.")
endif()