Qt与CUDA相结合具体的操作主要修改qt项目中的配置文件pro。下面以测试的项目为例。
因为这是一个测试案例，代码很简单，下面将这几个文件的代码贴出来，方面后面对应pro文件和Makefile文件中的内容。
1.main.cpp
1 #include "mainwindow.h" 2 #include <QApplication> 3 4 int main(int argc, char *argv[]) 5 { 6 printf("main1 "); 7 8 QApplication a(argc, argv); 9 MainWindow w; 10 w.show(); 11 12 printf("main2 "); 13 return a.exec(); 14 }
2.mainwindow.cpp
1 #include "ui_mainwindow.h" 2 #include "binlinearinterpolationcuda.h" 3 4 5 MainWindow::MainWindow(QWidget *parent) : 6 QMainWindow(parent), 7 ui(new Ui::MainWindow) 8 { 9 ui->setupUi(this); 10 printf("MainWindow "); 11 12 BinlinearInterpolation();//cuda代码的入口 13 } 14 15 MainWindow::~MainWindow() 16 { 17 delete ui; 18 }
3.binlinearinterpolationcuda.cu
1 #include "binlinearinterpolationcuda.h" 2 3 4 __global__ void Binlinear1_kernel(float *M,float *N,int *x,int *width1); 5 __global__ void Binlinear2_kernel(float *N,float *V,int *y,int *width1); 6 void BinlinearInterpolation(){ 7 /****/ 8 Binlinear1_kernel<<<gridDim,blockDim>>>(M,N,x,width1); 9 Binlinear2_kernel<<<gridDim1,blockDim1>>>(N,V,y,width1); 10 /***/ 11 12 }
4.binlinearinterpolationcuda.h
1 #ifndef BINLINEARINTERPOLATIONCUDA_H 2 #define BINLINEARINTERPOLATIONCUDA_H 3 #include "cuda_runtime.h" 4 #include "device_launch_parameters.h" 5 #include <stdio.h> 6 #include "malloc.h" 7 #define WIDTH 11 8 9 #define HEIGHT 10 10 #define X_INTER 3 11 #define Y_INTER 3 12 #define BLOCK_SIZE 8 13 14 void BinlinearInterpolation(); 15 #endif // BINLINEARINTERPOLATIONCUDA_H
5.mainwindow.h
1 #ifndef MAINWINDOW_H 2 #define MAINWINDOW_H 3 4 #include <QMainWindow> 5 6 namespace Ui { 7 class MainWindow; 8 } 9 10 class MainWindow : public QMainWindow 11 { 12 Q_OBJECT 13 14 public: 15 explicit MainWindow(QWidget *parent = 0); 16 ~MainWindow(); 17 18 void creatMenu(); 19 20 private: 21 Ui::MainWindow *ui; 22 23 24 }; 25 26 #endif // MAINWINDOW_H
6.pro文件的配置
1 ###################################################################### 2 # Automatically generated by qmake (2.01a) Thu Nov 2 11:20:26 2017 3 ###################################################################### 4 5 TEMPLATE = app 6 TARGET = 7 DEPENDPATH += . 8 INCLUDEPATH += . 9 /usr/local/include 10 /usr/include 11 12 QT += core gui 13 CONFIG += debug 14 15 HEADERS += mainwindow.h 16 binlinearinterpolationcuda.h 17 FORMS += mainwindow.ui 18 SOURCES += main.cpp mainwindow.cpp 19 LIBS += -L"/usr/local/lib" 20 -L"/usr/local/cuda/lib64" 21 -lcudart 22 -lcufft 23 24 DEPENDPATH += . 25 26 OTHER_FILES += binlinearinterpolationcuda.cu 27 28 CUDA_SOURCES += binlinearinterpolationcuda.cu 29 30 CUDA_SDK = "/usr/local/cuda" # Path to cuda SDK install 31 CUDA_DIR = "/usr/local/cuda" # Path to cuda toolkit install 32 SYSTEM_NAME = linux # Depending on your system either 'Win32', 'x64', or 'Win64' 33 SYSTEM_TYPE = 64 # '32' or '64', depending on your system 34 CUDA_ARCH = sm_21 # Type of CUDA architecture, for example 'compute_10', 'compute_11', 'sm_10' 35 NVCC_OPTIONS = --use_fast_math 36 37 38 INCLUDEPATH += $$CUDA_DIR/include 39 QMAKE_LIBDIR += $$CUDA_DIR/lib64/ 40 41 CUDA_OBJECTS_DIR = ./ 42 43 CUDA_LIBS = cudart cufft 44 CUDA_INC = $$join(INCLUDEPATH,'" -I"','-I"','"') 45 NVCC_LIBS = $$join(CUDA_LIBS,' -l','-l', '') 46 47 CONFIG(debug, debug|release) { 48 # Debug mode 49 cuda_d.input = CUDA_SOURCES 50 cuda_d.output = $$CUDA_OBJECTS_DIR/${QMAKE_FILE_BASE}_cuda.o 51 cuda_d.commands = $$CUDA_DIR/bin/nvcc -D_DEBUG $$NVCC_OPTIONS $$CUDA_INC $$NVCC_LIBS --machine $$SYSTEM_TYPE -arch=$$CUDA_ARCH -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME} 52 cuda_d.dependency_type = TYPE_C 53 QMAKE_EXTRA_COMPILERS += cuda_d 54 } 55 else { 56 # Release mode 57 cuda.input = CUDA_SOURCES 58 cuda.output = $$CUDA_OBJECTS_DIR/${QMAKE_FILE_BASE}_cuda.o 59 cuda.commands = $$CUDA_DIR/bin/nvcc $$NVCC_OPTIONS $$CUDA_INC $$NVCC_LIBS --machine $$SYSTEM_TYPE -arch=$$CUDA_ARCH -O3 -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME} 60 cuda.dependency_type = TYPE_C 61 QMAKE_EXTRA_COMPILERS += cuda 62 }
pro文件的配置是参照http://blog.163.com/qimo601@126/blog/static/15822093201401305739673/中提到的方法。该方法非常适用，比其他需要修改Makefile文件的方法更加实用。
7.修改完pro文件后，就可以qmake->make->执行目标文件
8.Makefile文件
1 ############################################################################# 2 # Makefile for building: qtcuda 3 # Generated by qmake (2.01a) (Qt 4.8.1) on: Thu Nov 2 19:39:13 2017 4 # Project: qtcuda.pro 5 # Template: app 6 # Command: /usr/local/Trolltech/Qt-4.8.1/bin/qmake -o Makefile qtcuda.pro 7 ############################################################################# 8 9 ####### Compiler, tools and options 10 11 CC = gcc 12 CXX = g++ 13 DEFINES = -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED 14 CFLAGS = -m64 -pipe -g -Wall -W -D_REENTRANT $(DEFINES) 15 CXXFLAGS = -m64 -pipe -g -Wall -W -D_REENTRANT $(DEFINES) 16 INCPATH = -I/usr/local/Trolltech/Qt-4.8.1/mkspecs/linux-g++-64 -I. -I/usr/local/Trolltech/Qt-4.8.1/include/QtCore -I/usr/local/Trolltech/Qt-4.8.1/include/QtGui -I/usr/local/Trolltech/Qt-4.8.1/include -I. -I/usr/local/include -I/usr/include -I/usr/local/cuda/include -I. -I. 17 LINK = g++ 18 LFLAGS = -m64 -Wl,-rpath,/usr/local/Trolltech/Qt-4.8.1/lib 19 LIBS = $(SUBLIBS) -L/usr/local/cuda/lib64/ -L/usr/local/Trolltech/Qt-4.8.1/lib -L/usr/local/lib -L/usr/local/cuda/lib64 -lcudart -lcufft -lQtGui -L/usr/local/Trolltech/Qt-4.8.1/lib -L/usr/X11R6/lib64 -lQtCore -lpthread 20 AR = ar cqs 21 RANLIB = 22 QMAKE = /usr/local/Trolltech/Qt-4.8.1/bin/qmake 23 TAR = tar -cf 24 COMPRESS = gzip -9f 25 COPY = cp -f 26 SED = sed 27 COPY_FILE = $(COPY) 28 COPY_DIR = $(COPY) -r 29 STRIP = strip 30 INSTALL_FILE = install -m 644 -p 31 INSTALL_DIR = $(COPY_DIR) 32 INSTALL_PROGRAM = install -m 755 -p 33 DEL_FILE = rm -f 34 SYMLINK = ln -f -s 35 DEL_DIR = rmdir 36 MOVE = mv -f 37 CHK_DIR_EXISTS= test -d 38 MKDIR = mkdir -p 39 40 ####### Output directory 41 42 OBJECTS_DIR = ./ 43 44 ####### Files 45 46 SOURCES = main.cpp 47 mainwindow.cpp moc_mainwindow.cpp 48 OBJECTS = binlinearinterpolationcuda_cuda.o 49 main.o 50 mainwindow.o 51 moc_mainwindow.o 52 DIST = /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/unix.conf 53 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/linux.conf 54 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/gcc-base.conf 55 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/gcc-base-unix.conf 56 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/g++-base.conf 57 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/g++-unix.conf 58 /usr/local/Trolltech/Qt-4.8.1/mkspecs/qconfig.pri 59 /usr/local/Trolltech/Qt-4.8.1/mkspecs/modules/qt_webkit_version.pri 60 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/qt_functions.prf 61 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/qt_config.prf 62 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/exclusive_builds.prf 63 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/default_pre.prf 64 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/debug.prf 65 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/default_post.prf 66 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/unix/gdb_dwarf_index.prf 67 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/warn_on.prf 68 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/qt.prf 69 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/unix/thread.prf 70 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/moc.prf 71 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/resources.prf 72 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/uic.prf 73 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/yacc.prf 74 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/lex.prf 75 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/include_source_dir.prf 76 qtcuda.pro 77 QMAKE_TARGET = qtcuda 78 DESTDIR = 79 TARGET = qtcuda 80 81 first: all 82 ####### Implicit rules 83 84 .SUFFIXES: .o .c .cpp .cc .cxx .C 85 86 .cpp.o: 87 $(CXX) -c $(CXXFLAGS) $(INCPATH) -o "$@" "$<" 88 89 .cc.o: 90 $(CXX) -c $(CXXFLAGS) $(INCPATH) -o "$@" "$<" 91 92 .cxx.o: 93 $(CXX) -c $(CXXFLAGS) $(INCPATH) -o "$@" "$<" 94 95 .C.o: 96 $(CXX) -c $(CXXFLAGS) $(INCPATH) -o "$@" "$<" 97 98 .c.o: 99 $(CC) -c $(CFLAGS) $(INCPATH) -o "$@" "$<" 100 101 ####### Build rules 102 103 all: Makefile $(TARGET) 104 105 $(TARGET): ui_mainwindow.h $(OBJECTS) 106 $(LINK) $(LFLAGS) -o $(TARGET) $(OBJECTS) $(OBJCOMP) $(LIBS) 107 { test -n "$(DESTDIR)" && DESTDIR="$(DESTDIR)" || DESTDIR=.; } && test $$(gdb --version | sed -e 's,[^0-9]+([0-9]).([0-9]).*,12,;q') -gt 72 && gdb --nx --batch --quiet -ex 'set confirm off' -ex "save gdb-index $$DESTDIR" -ex quit '$(TARGET)' && test -f $(TARGET).gdb-index && objcopy --add-section '.gdb_index=$(TARGET).gdb-index' --set-section-flags '.gdb_index=readonly' '$(TARGET)' '$(TARGET)' && rm -f $(TARGET).gdb-index || true 108 109 Makefile: qtcuda.pro /usr/local/Trolltech/Qt-4.8.1/mkspecs/linux-g++-64/qmake.conf /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/unix.conf 110 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/linux.conf 111 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/gcc-base.conf 112 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/gcc-base-unix.conf 113 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/g++-base.conf 114 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/g++-unix.conf 115 /usr/local/Trolltech/Qt-4.8.1/mkspecs/qconfig.pri 116 /usr/local/Trolltech/Qt-4.8.1/mkspecs/modules/qt_webkit_version.pri 117 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/qt_functions.prf 118 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/qt_config.prf 119 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/exclusive_builds.prf 120 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/default_pre.prf 121 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/debug.prf 122 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/default_post.prf 123 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/unix/gdb_dwarf_index.prf 124 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/warn_on.prf 125 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/qt.prf 126 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/unix/thread.prf 127 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/moc.prf 128 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/resources.prf 129 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/uic.prf 130 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/yacc.prf 131 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/lex.prf 132 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/include_source_dir.prf 133 /usr/local/Trolltech/Qt-4.8.1/lib/libQtGui.prl 134 /usr/local/Trolltech/Qt-4.8.1/lib/libQtCore.prl 135 $(QMAKE) -o Makefile qtcuda.pro 136 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/unix.conf: 137 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/linux.conf: 138 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/gcc-base.conf: 139 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/gcc-base-unix.conf: 140 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/g++-base.conf: 141 /usr/local/Trolltech/Qt-4.8.1/mkspecs/common/g++-unix.conf: 142 /usr/local/Trolltech/Qt-4.8.1/mkspecs/qconfig.pri: 143 /usr/local/Trolltech/Qt-4.8.1/mkspecs/modules/qt_webkit_version.pri: 144 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/qt_functions.prf: 145 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/qt_config.prf: 146 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/exclusive_builds.prf: 147 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/default_pre.prf: 148 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/debug.prf: 149 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/default_post.prf: 150 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/unix/gdb_dwarf_index.prf: 151 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/warn_on.prf: 152 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/qt.prf: 153 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/unix/thread.prf: 154 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/moc.prf: 155 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/resources.prf: 156 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/uic.prf: 157 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/yacc.prf: 158 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/lex.prf: 159 /usr/local/Trolltech/Qt-4.8.1/mkspecs/features/include_source_dir.prf: 160 /usr/local/Trolltech/Qt-4.8.1/lib/libQtGui.prl: 161 /usr/local/Trolltech/Qt-4.8.1/lib/libQtCore.prl: 162 qmake: FORCE 163 @$(QMAKE) -o Makefile qtcuda.pro 164 165 dist: 166 @$(CHK_DIR_EXISTS) .tmp/qtcuda1.0.0 || $(MKDIR) .tmp/qtcuda1.0.0 167 $(COPY_FILE) --parents $(SOURCES) $(DIST) .tmp/qtcuda1.0.0/ && $(COPY_FILE) --parents binlinearinterpolationcuda.cu .tmp/qtcuda1.0.0/ && $(COPY_FILE) --parents mainwindow.h binlinearinterpolationcuda.h .tmp/qtcuda1.0.0/ && $(COPY_FILE) --parents main.cpp mainwindow.cpp .tmp/qtcuda1.0.0/ && $(COPY_FILE) --parents mainwindow.ui .tmp/qtcuda1.0.0/ && (cd `dirname .tmp/qtcuda1.0.0` && $(TAR) qtcuda1.0.0.tar qtcuda1.0.0 && $(COMPRESS) qtcuda1.0.0.tar) && $(MOVE) `dirname .tmp/qtcuda1.0.0`/qtcuda1.0.0.tar.gz . && $(DEL_FILE) -r .tmp/qtcuda1.0.0 168 169 170 clean:compiler_clean 171 -$(DEL_FILE) $(OBJECTS) 172 -$(DEL_FILE) *~ core *.core 173 174 175 ####### Sub-libraries 176 177 distclean: clean 178 -$(DEL_FILE) $(TARGET) 179 -$(DEL_FILE) Makefile 180 181 182 check: first 183 184 mocclean: compiler_moc_header_clean compiler_moc_source_clean 185 186 mocables: compiler_moc_header_make_all compiler_moc_source_make_all 187 188 compiler_cuda_d_make_all: binlinearinterpolationcuda_cuda.o 189 compiler_cuda_d_clean: 190 -$(DEL_FILE) binlinearinterpolationcuda_cuda.o 191 binlinearinterpolationcuda_cuda.o: binlinearinterpolationcuda.h 192 binlinearinterpolationcuda.cu 193 /usr/local/cuda/bin/nvcc -D_DEBUG --use_fast_math -I"." -I"/usr/local/include" -I"/usr/include" -I"/usr/local/cuda/include" -lcudart -lcufft --machine 64 -arch=sm_21 -c -o binlinearinterpolationcuda_cuda.o binlinearinterpolationcuda.cu 194 195 compiler_moc_header_make_all: moc_mainwindow.cpp 196 compiler_moc_header_clean: 197 -$(DEL_FILE) moc_mainwindow.cpp 198 moc_mainwindow.cpp: mainwindow.h 199 /usr/local/Trolltech/Qt-4.8.1/bin/moc $(DEFINES) $(INCPATH) mainwindow.h -o moc_mainwindow.cpp 200 201 compiler_rcc_make_all: 202 compiler_rcc_clean: 203 compiler_image_collection_make_all: qmake_image_collection.cpp 204 compiler_image_collection_clean: 205 -$(DEL_FILE) qmake_image_collection.cpp 206 compiler_moc_source_make_all: 207 compiler_moc_source_clean: 208 compiler_uic_make_all: ui_mainwindow.h 209 compiler_uic_clean: 210 -$(DEL_FILE) ui_mainwindow.h 211 ui_mainwindow.h: mainwindow.ui 212 /usr/local/Trolltech/Qt-4.8.1/bin/uic mainwindow.ui -o ui_mainwindow.h 213 214 compiler_yacc_decl_make_all: 215 compiler_yacc_decl_clean: 216 compiler_yacc_impl_make_all: 217 compiler_yacc_impl_clean: 218 compiler_lex_make_all: 219 compiler_lex_clean: 220 compiler_clean: compiler_cuda_d_clean compiler_moc_header_clean compiler_uic_clean 221 222 ####### Compile 223 224 main.o: main.cpp mainwindow.h 225 $(CXX) -c $(CXXFLAGS) $(INCPATH) -o main.o main.cpp 226 227 mainwindow.o: mainwindow.cpp mainwindow.h 228 ui_mainwindow.h 229 binlinearinterpolationcuda.h 230 $(CXX) -c $(CXXFLAGS) $(INCPATH) -o mainwindow.o mainwindow.cpp 231 232 moc_mainwindow.o: moc_mainwindow.cpp 233 $(CXX) -c $(CXXFLAGS) $(INCPATH) -o moc_mainwindow.o moc_mainwindow.cpp 234 235 ####### Install 236 237 install: FORCE 238 239 uninstall: FORCE 240 241 FORCE:
有兴趣的同学，可以根据pro文件中的内容都Makefile中的代码。
9.有关pro文件的配置情况，可以参看“http://blog.csdn.net/liang19890820/article/details/51774724”