New in version 3.17.
This script locates the NVIDIA CUDA toolkit and the associated libraries, but
does not require the
CUDA language be enabled for a given project. This
module does not search for the NVIDIA CUDA Samples.
New in version 3.19: QNX support.
The CUDA Toolkit search behavior uses the following order:
CUDAlanguage has been enabled we will use the directory containing the compiler as the first search location for
CUDAToolkit_ROOTcmake configuration variable (e.g.,
-DCUDAToolkit_ROOT=/some/path) or environment variable is defined, it will be searched. If both an environment variable and a configuration variable are specified, the configuration variable takes precedence.
The directory specified here must be such that the executable
nvccor the appropriate
version.txtfile can be found underneath the specified directory.
If the CUDA_PATH environment variable is defined, it will be searched for
The user's path is searched for
find_program(). If this is found, no subsequent search attempts are performed. Users are responsible for ensuring that the first
nvccto show up in the path is the desired path in the event that multiple CUDA Toolkits are installed.
On Unix systems, if the symbolic link
/usr/local/cudaexists, this is used. No subsequent search attempts are performed. No default symbolic link location exists for the Windows platform.
The platform specific default install locations are searched. If exactly one candidate is found, this is used. The default CUDA Toolkit install locations searched are:
C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\vX.Y
X.Ywould be a specific version of the CUDA Toolkit, such as
C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v9.0
When multiple CUDA Toolkits are installed in the default location of a system (e.g., both
/usr/local/cuda-10.0exist but the
/usr/local/cudasymbolic link does not exist), this package is marked as not found.
There are too many factors involved in making an automatic decision in the presence of multiple CUDA Toolkits being installed. In this situation, users are encouraged to either (1) set
CUDAToolkit_ROOTor (2) ensure that the correct
nvccexecutable shows up in
[<version>]argument requests a version with which the package found should be compatible. See find_package version format for more details.
If specified, configuration will error if a suitable CUDA Toolkit is not found.
If specified, the search for a suitable CUDA Toolkit will not produce any messages.
If specified, the CUDA Toolkit is considered found only if the exact
VERSIONspecified is recovered.
An imported target named
CUDA::toolkit is provided.
This module defines
IMPORTED targets for each
of the following libraries that are part of the CUDAToolkit:
CUDA Runtime Library¶
The CUDA Runtime library (cudart) are what most applications will typically need to link against to make any calls such as cudaMalloc, and cudaFree.
CUDA Driver Library¶
The CUDA Driver library (cuda) are used by applications that use calls such as cuMemAlloc, and cuMemFree.
The cuBLAS library.
CUDA::cublasLtstarting in CUDA 10.1
CUDA::cublasLt_staticstarting in CUDA 10.1
New in version 3.25.
The NVIDIA GPUDirect Storage cuFile library.
CUDA::cuFilestarting in CUDA 11.4
CUDA::cuFile_staticstarting in CUDA 11.4
CUDA::cuFile_rdmastarting in CUDA 11.4
CUDA::cuFile_rdma_staticstarting in CUDA 11.4
The cuFFT library.
CUDA::cufft_static_nocallbackstarting in CUDA 9.2, requires CMake 3.23+
The cuRAND library.
The cuSOLVER library.
The cuSPARSE library.
The NPP libraries.
nppial: Arithmetic and logical operation functions in nppi_arithmetic_and_logical_operations.h
nppicc: Color conversion and sampling functions in nppi_color_conversion.h
nppicom: JPEG compression and decompression functions in nppi_compression_functions.h Removed starting in CUDA 11.0, use nvJPEG instead.
nppidei: Data exchange and initialization functions in nppi_data_exchange_and_initialization.h
nppif: Filtering and computer vision functions in nppi_filter_functions.h
nppig: Geometry transformation functions found in nppi_geometry_transforms.h
nppim: Morphological operation functions found in nppi_morphological_operations.h
nppist: Statistics and linear transform in nppi_statistics_functions.h and nppi_linear_transforms.h
nppisu: Memory support functions in nppi_support_functions.h
nppitc: Threshold and compare operation functions in nppi_threshold_and_compare_operations.h
The nvBLAS libraries. This is a shared library only.
The nvGRAPH library. Removed starting in CUDA 11.0
The nvJPEG library. Introduced in CUDA 10.
New in version 3.25.
The nvPTX (PTX Compilation) library. The PTX Compiler APIs are a set of APIs which can be used to compile a PTX program into GPU assembly code. Introduced in CUDA 11.1 This is a static library only.
CUDA::nvptxcompiler_staticstarting in CUDA 11.1
The nvRTC (Runtime Compilation) library. This is a shared library only.
New in version 3.26:
CUDA::nvrtc_staticstarting in CUDA 11.5
CUDA::nvrtc_builtins_staticstarting in CUDA 11.5
The NVIDIA Management Library. This is a shared library only.
Deprecated since version 3.25: With CUDA 10.0+, use nvtx3.
The NVIDIA Tools Extension. This is a shared library only.
New in version 3.25.
The header-only NVIDIA Tools Extension Library. Introduced in CUDA 10.0.
The NVIDIA OpenCL Library. This is a shared library only.
The cuLIBOS library is a backend thread abstraction layer library which is
static only. The
CUDA::curand_static, and (when implemented) NPP
libraries all automatically have this dependency linked.
Note: direct usage of this target by consumers should not be necessary.
A boolean specifying whether or not the CUDA Toolkit was found.
The exact version of the CUDA Toolkit found (as reported by
The major version of the CUDA Toolkit.
The minor version of the CUDA Toolkit.
The patch version of the CUDA Toolkit.
The path to the CUDA Toolkit library directory that contains the CUDA executable
The path to the CUDA Toolkit
includefolder containing the header files required to compile a project linking against CUDA.
The path to the CUDA Toolkit library directory that contains the CUDA Runtime library
New in version 3.18.
The path to the CUDA Toolkit directory containing the nvvm directory and version.txt.
The path to the CUDA Toolkit directory including the target architecture when cross-compiling. When not cross-compiling this will be equivalent to the parent directory of
The path to the NVIDIA CUDA compiler
nvcc. Note that this path may not be the same as
nvccmust be found to determine the CUDA Toolkit version as well as determining other features of the Toolkit. This variable is set for the convenience of modules that depend on this one.