[ITK-users] Create ITK Project with CUDA from CMake

[D'Isidoro Fabio]

Thank you very much Jose,

I can’t make your example work, but I am not sure I have been doing the right things. If you can help me:

I am using Visual Studio, Windows 10. My directory looks like:

CUDAitk/
               src/
                     CUDAitk.cu
                     CMakeLists.txt
                     CUDApart/
                                        CUDApart.cu
                                        CMakeLists.txt
               bin/

where

----------- CUDAitk/CUDApart/CMakeLists.txt -----------

FIND_PACKAGE(CUDA REQUIRED)

set (CUDA_NVCC_FLAGS "-g -G -lineinfo" CACHE STRING "nvcc flags" FORCE)

SET (CUDA_VERBOSE_BUILD ON CACHE BOOL "nvcc verbose" FORCE)

SET(LIB_TYPE STATIC)    #set the lib type
CUDA_ADD_LIBRARY(CUDAPart ${LIB_TYPE} CUDApart.h CUDApart.cu )

-----------------------------------------------------------------------

----------- src/CMakeLists.txt -----------

project(CUDAitk)

find_package(ITK REQUIRED)
include(${ITK_USE_FILE})

find_package(CUDA REQUIRED)

add_subdirectory(CUDApart )

INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/CUDApart)

INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/CUDApart/Debug)

LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/CUDApart)

LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/CUDApart/Debug)

cuda_add_executable(CUDAitk CUDAitk.cu ${SOURCES}  )

ADD_DEPENDENCIES(CUDAitk CUDApart)

target_link_libraries( CUDAitk CUDApart ${ITK_LIBRARIES} )

-----------------------------------------------------------------------

CUDAitk.cu starts with

#include "CUDApart.h"
#include "itkImage.h"


My issues are:


1)     I understand I should NOT create the static library first (with Cmake) and then the main project (with another CMake run). Instead, add_subdirectory() should assure that the library is generated first with CUDAitk/CUDApart/CMakeLists.txt and then the src/CMakeLists.txt is generated after that. Is that correct?

2)     However at generation, Cmake does not find the CUDApart library (I need to build the created project with Visual Studio first).

3)     When I build the main project with Visual Studio (after running CMake), the itk library is not recognized (link error)

I would appreciate any feedback that could be useful to figure this whole thing out.

Thank you again!


From: jose alejandro matute flores [mailto:jmatuteflores at gmail.com]
Sent: Dienstag, 21. März 2017 23:40
To: D'Isidoro Fabio <fisidoro at ethz.ch>
Cc: insight-users at itk.org
Subject: Re: [ITK-users] Create ITK Project with CUDA from CMake

Hi,

I use cuda as well, I have a different directory for my cuda parts of the application.
What I do is create a static library and link it to the application.
It might not be the best way, but it's been working so far.


 -------------------cuda/CMakeLists.txt ------------------------


FIND_PACKAGE(CUDA REQUIRED)



set (CUDA_NVCC_FLAGS "-g -G -lineinfo" CACHE STRING "nvcc flags" FORCE)



SET (CUDA_VERBOSE_BUILD ON CACHE BOOL "nvcc verbose" FORCE)



SET(LIB_TYPE STATIC)    #set the lib type

CUDA_ADD_LIBRARY(cudaLibName ${LIB_TYPE} visual.h visual.cu<http://visual.cu> )



--------------------------------------------------





and in the main project directory



------- CMakeLists.txt---------------------





find_package(CUDA REQUIRED)



add_subdirectory(cuda)



INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/cuda)



INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/cuda/lib)



LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/cuda)



LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/cuda/lib)



cuda_add_executable(CUDAitk ${SOURCES}  )



ADD_DEPENDENCIES(CUDAitk cudaLibName)



target_link_libraries( CUDAitk  cudaLibName ....  )



---------------------------------------------


Best,
José

On Tue, Mar 21, 2017 at 6:49 PM, D'Isidoro Fabio <fisidoro at ethz.ch<mailto:fisidoro at ethz.ch>> wrote:
Hallo,

I have a .cu CUDA main code which makes use of itk to read and write images.

How can I create a new ITK project with Cmake that include CUDA? I could not find any tutorial/description on it. Since I am not familiar with Cmake, I would need an understandable and detailed description.

The most basic CmakeLists.txt I could find does not work:

------------------------------
project(CUDAitk)

find_package(ITK REQUIRED)
include(${ITK_USE_FILE})

find_package(CUDA REQUIRED)

CUDA_INCLUDE_DIRECTORIES(${ITK_INCLUDE_DIRS})

cuda_add_executable(CUDAitk CUDAitk.cu)
target_link_libraries(CUDAitk ${ITK_LIBRARIES})

------------------------------

The compling errors I get are like:

error C2244: 'itk::FixedArray<TValue,VLength>::FixedArray': unable to match function definition to an existing declaration

CMake Error at CUDAitk_generated_CUDAitk.cu.obj.Debug.cmake:267 (message):
    Error generating file
    C:/Users/Fabio/Documents/CUDAitk_cpp2/bin/CMakeFiles/CUDAitk.dir//Debug/CUDAitk_generated_CUDAitk.cu.obj


Any help is highly appreciated.

Thank you!

Fabio





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