我试图链接CUDA项目中的对象文件。下面是我的makefile:CUDA 8.0 nvcc fatal:指定ouputtfile时非链接阶段所需的单个输入文件
CUDA_PATH := /usr/local/cuda
NVCC := $(CUDA_PATH)/bin/nvcc
NVCCFLAGS := -arch=sm_37 --device-c -std=c++11 -cudart=shared -rdc=true
LIBS := -lcutil -lcudpp -lcuda -lcudart -lcurand
LIBPATH := $(CUDA_PATH)/lib64
SOLIBS := $(LIBPATH)/*.so
OBJS := main.o mtx.o mpamp_for_loop_funs.o cuBLAS_funs.o sparsify_threshold.o
########################################################################
# link
all: $(OBJs)
$(NVCC) $(NVCCFLAGS) $(OBJS) $(SOLIBS) $(LIBS) -o mpamp
#--output-file mpamp.o
########################################################################
# compile individually
main.o: main.cu header.h
$(NVCC) $(NVCCFLAGS) -c main.cu
mtx.o: mtx.cu header.h
$(NVCC) $(NVCCFLAGS) -c mtx.cu
mpamp_for_loop_funs.o: mpamp_for_loop_funs.cu header.h
$(NVCC) $(NVCCFLAGS) -c mpamp_for_loop_funs.cu
cuBLAS_funs.o: cuBLAS_funs.cu header.h
$(NVCC) $(NVCCFLAGS) -c cuBLAS_funs.cu
sparsify_threshold.o: sparsify_threshold.cu header.h
$(NVCC) $(NVCCFLAGS) -c sparsify_threshold.cu
########################################################################
run: build
$(EXEC) ./mpamp
clean:
\rm *.o *~ mpamp
########################################################################
我曾试图消除$(SOLIBS)
,它将返回相同的错误:
ece$ make all
/usr/local/cuda/bin/nvcc -arch=sm_37 --device-c -std=c++11 -cudart=shared -rdc=true main.o mtx.o mpamp_for_loop_funs.o cuBLAS_funs.o sparsify_threshold.o /usr/local/cuda/lib64/*.so -lcutil -lcudpp -lcuda -lcudart -lcurand -o mpamp
nvcc fatal : A single input file is required for a non-link phase when an outputfile is specified
make: *** [all] Error 1
此外,当我删除-o mpamp
,该make all
命令工作,但不产生输出文件然后执行。
有没有人有任何提示过去这个错误?
我最近从Windows中的Visual Studio移到了Linux机器上。 VS做了编译和链接 '自动'(我加斜杠和换行符):
nvcc -dlink -o x64\Debug\MPAMP.device-link.obj -Xcompiler "/EHsc /W3 /nologo /Od /Zi /RTC1 /MTd " \
-L"\lib\x64" cublas.lib cublas_device.lib cudadevrt.lib curand.lib
cudart.lib cudart_static.lib \
kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib \
odbc32.lib odbccp32.lib -gencode=arch=compute_35,code=sm_35 -G \
--machine 64 x64\Debug\cuBLAS_funs.cu.obj x64\Debug\inner_loop.cu.obj x64\Debug\main.cu.obj \
x64\Debug\mpamp_for_loop_funs.cu.obj x64\Debug\mtx.cu.obj x64\Debug\sparsify_threshold.cu.obj
更新:每下面的答案,相关的makefile线现在是:
NVCCFLAGS := -arch=sm_37 --device-c -std=c++11
NVCCLFLAGS := -arch=sm_37 -std=c++11 -cudart=shared -rdc=true
LDFLAGS := -I$(CUDA_PATH)/include -L$(CUDAPATH)/lib64
LIBPATH := $(CUDA_PATH)/lib64
SOLIBS := $(LIBPATH)/libcublas.so $(LIBPATH)/libcurand.so $(LIBPATH)/libcudart.so
OBJS := main.o mtx.o mpamp_for_loop_funs.o cuBLAS_funs.o sparsify_threshold.o
LIBS := -lcutil -lcudpp -lcuda -lcudart -lcurand -lcublas
########################################################################
# link
all: $(OBJs)
$(NVCC) $(NVCCLFLAGS) $(LDFLAGS) -o mpamp $(OBJS) $(SOLIBS) $(LIBS)
但是,我收到以下错误:
ece$ make all
/usr/local/cuda/bin/nvcc -arch=sm_37 -std=c++11 -cudart=shared -rdc=true -I/usr/local/cuda/include -L/lib64 -o mpamp main.o mtx.o mpamp_for_loop_funs.o cuBLAS_funs.o sparsify_threshold.o /usr/local/cuda/lib64/libcublas.so /usr/local/cuda/lib64/libcurand.so /usr/local/cuda/lib64/libcudart.so -lcutil -lcudpp -lcuda -lcudart -lcurand -lcublas
nvlink error : Undefined reference to 'cublasDgemm_v2' in 'cuBLAS_funs.o'
make: *** [all] Error 255
我试图在连接语句,每this question重新排列标志,但没有成功。
解决!感谢您的帮助。下面是最终的变化:
LIBPATH := $(CUDA_PATH)/lib64
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/cuda/lib64
SOLIBS := $(LIBPATH)/libcublas.so $(LIBPATH)/libcurand.so
OBJS := main.o mtx.o mpamp_for_loop_funs.o cuBLAS_funs.o sparsify_threshold.o
LIBS := -lcuda -lcurand -lcublas -lcublas_device
虽然它不是问题的根源,对你的编译标志(' NVCCFLAGS')'--device-c'和'-rdc-true'的用法是多余的。如果你愿意,只指定'--device-c'就足够了。但是保留'-rdc = true'并不会伤害任何东西。同样,'-cudart = shared'是一个链接阶段的开关,所以它属于你的'NVCCLFLAGS'变量,但在编译时无关紧要,并且可以在编译阶段从NVCCFLAGS变量中安全省略。 –