error: identifier "atomic" is undefined

Accelerated Computing CUDA CUDA Programming and Performance
1

I got a mistake when i use atomicMin function.My configuration is as follows.
arch=sm_32
softWare: ubuntu
hardWare: nvidia Tegra K1

Here is platform information:
device name: GK20A
computer ability: 3.2

QT       += core
QT       -= gui
TARGET = QtCuda
CONFIG   += console
CONFIG   -= app_bundle
TEMPLATE = app
SOURCES += main.cpp


# This makes the .cu files appear in your project
OTHER_FILES +=  ./cuda_interface.cu

# CUDA settings <-- may change depending on your system
CUDA_SOURCES += ./cuda_interface.cu
CUDA_SDK = "/usr/local/cuda-5.0/"   # Path to cuda SDK install
CUDA_DIR = "/usr/local/cuda-5.0/"            # Path to cuda toolkit install

# DO NOT EDIT BEYOND THIS UNLESS YOU KNOW WHAT YOU ARE DOING....

SYSTEM_NAME = unix         # Depending on your system either 'Win32', 'x64', or 'Win64'
SYSTEM_TYPE = 32            # '32' or '64', depending on your system
CUDA_ARCH = sm_32           # Type of CUDA architecture, for example 'compute_10', 'compute_11', 'sm_10'
NVCC_OPTIONS = --use_fast_math


# include paths
INCLUDEPATH += $$CUDA_DIR/include

# library directories
QMAKE_LIBDIR += $$CUDA_DIR/lib/
CUDA_OBJECTS_DIR = ./

# Add the necessary libraries
CUDA_LIBS = -lcuda -lcudart

# The following makes sure all path names (which often include spaces) are put between quotation marks
CUDA_INC = $$join(INCLUDEPATH,'" -I"','-I"','"')
#LIBS += $$join(CUDA_LIBS,'.so ', '', '.so')
LIBS += $$CUDA_LIBS

# Configuration of the Cuda compiler
CONFIG(debug, debug|release) {
    # Debug mode
    cuda_d.input = CUDA_SOURCES
    cuda_d.output = $$CUDA_OBJECTS_DIR/${QMAKE_FILE_BASE}_cuda.o
    cuda_d.commands = $$CUDA_DIR/bin/nvcc -D_DEBUG $$NVCC_OPTIONS $$CUDA_INC $$NVCC_LIBS --machine $$SYSTEM_TYPE -arch=$$CUDA_ARCH -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME}
    cuda_d.dependency_type = TYPE_C
    QMAKE_EXTRA_COMPILERS += cuda_d
}
else {
    # Release mode
    cuda.input = CUDA_SOURCES
    cuda.output = $$CUDA_OBJECTS_DIR/${QMAKE_FILE_BASE}_cuda.o
    cuda.commands = $$CUDA_DIR/bin/nvcc $$NVCC_OPTIONS $$CUDA_INC $$NVCC_LIBS --machine $$SYSTEM_TYPE -arch=$$CUDA_ARCH -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME}
    cuda.dependency_type = TYPE_C
    QMAKE_EXTRA_COMPILERS += cuda
}
2

atomicMin should be supported in device code for certain specific data types:

http://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#atomicmin

It’s difficult to say much more since you haven’t shown any code. If the actual error message you are getting is this:

error: identifier "atomic" is undefined

that would indicate you are using the word “atomic” by itself, which is definitely incorrect usage. But its impossible to say without the actual code and actual compiler error output.