I tried to link cuFFT statically.
nvcc -ccbin g++ -dc -O3 -arch=sm_35 -c fftStat.cu fftStat.o;
nvcc -ccbin g++ -dlink -arch=sm_35 fftStat.o -o link.o;
g++ main.cc link.o fftStat.o -lcudart -lcudadevrt -lcufft_static -lculibos -ldl -pthread -lrt -L/usr/local/cuda-10.2/lib64 -o run
It gave me the following errors ( not showing all the errors)
/usr/local/cuda-10.2/lib64/libcufft_static.a(fft_dimension_class_multi.o): In function `__sti____cudaRegisterAll()':
fft_dimension_class_multi.compute_75.cudafe1.cpp:(.text+0xdad): undefined reference to `__cudaRegisterLinkedBinary_44_fft_dimension_class_multi_compute_75_cpp1_ii_466e44ab'
/usr/local/cuda-10.2/lib64/libcufft_static.a(fft_dimension_class_multi.o): In function `global constructors keyed to BaseListMulti::radices':
fft_dimension_class_multi.compute_75.cudafe1.cpp:(.text+0x1c8d): undefined reference to
float_64bit_regular_RT_SM50_plus.compute_75.cudafe1.cpp:(.text+0x3d): undefined reference to `__cudaRegisterLinkedBinary_51_float_64bit_regular_RT_SM50_plus_compute_75_cpp1_ii_66731515'
/usr/local/cuda-10.2/lib64/libcufft_static.a(float_64bit_regular_RT_SM50_plus.o): In function `global constructors keyed to compile_unitsforce_compile_float_width64_t_regular_fft_kernels__SM50_unbounded()':
float_64bit_regular_RT_SM50_plus.compute_75.cudafe1.cpp:(.text+0x29d): undefined reference to `__cudaRegisterLinkedBinary_51_float_64bit_regular_RT_SM50_plus_compute_75_cpp1_ii_66731515'
/usr/local/cuda-10.2/lib64/libcufft_static.a(float_64bit_regular_RT_SM60_plus.o): In function `__sti____cudaRegisterAll()':
float_64bit_regular_RT_SM60_plus.compute_75.cudafe1.cpp:(.text+0x3d): undefined reference to `__cudaRegisterLinkedBinary_51_float_64bit_regular_RT_SM60_plus_compute_75_cpp1_ii_dbb979db'
/usr/local/cuda-10.2/lib64/libcufft_static.a(float_64bit_regular_RT_SM60_plus.o): In function `global constructors keyed to compile_unitsforce_compile_float_width64_t_regular_fft_kernels__SM60_unbounded()':
float_64bit_regular_RT_SM60_plus.compute_75.cudafe1.cpp:(.text+0x18d): undefined reference to `__cudaRegisterLinkedBinary_51_float_64bit_regular_RT_SM60_plus_compute_75_cpp1_ii_dbb979db'
/usr/local/cuda-10.2/lib64/libcufft_static.a(half_32bit_regular_RT_SM53_plus.o): In function `__sti____cudaRegisterAll()':
half_32bit_regular_RT_SM53_plus.compute_75.cudafe1.cpp:(.text+0x3d): undefined reference to `__cudaRegisterLinkedBinary_50_half_32bit_regular_RT_SM53_plus_compute_75_cpp1_ii_96a57339'
/usr/local/cuda-10.2/lib64/libcufft_static.a(half_32bit_regular_RT_SM53_plus.o): In function `global constructors keyed to compile_unitsforce_compile_half_width32_t_regular_fft_kernels__SM53_unbounded()':
half_32bit_regular_RT_SM53_plus.compute_75.cudafe1.cpp:(.text+0x1b0d): undefined reference to `__cudaRegisterLinkedBinary_50_half_32bit_regular_RT_SM53_plus_compute_75_cpp1_ii_96a57339'
/usr/local/cuda-10.2/lib64/libcufft_static.a(half_32bit_vector_RT_SM53_plus.o): In function `__sti____cudaRegisterAll()':
half_32bit_vector_RT_SM53_plus.compute_75.cudafe1.cpp:(.text+0x3d): undefined reference to
dpRadix0343C_cb.compute_75.cudafe1.cpp:(.text+0xa54): undefined reference to `__cudaRegisterLinkedBinary_34_dpRadix0343C_cb_compute_75_cpp1_ii_b592a056'
collect2: error: ld returned 1 exit status
Dynamic linking works:
g++ main.cc link.o fftStat.o -lcudart -lcudadevrt -lcufft -L/usr/local/cuda-10.2/lib64 -o run
I followed this guide https://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/index.html#code-changes-for-separate-compilation and this guide https://docs.nvidia.com/cuda/cufft/index.html#static-library but apparently something is missing.
Some of the things you are attempting to accomplish at final link need to be accomplished at device link (your 2nd step). The following seems to work for me:
$ cat fftStat.cu
#include <cufft.h>
void test(){
cufftHandle h;
cufftCreate(&h);
}
$ cat main.cpp
void test();
int main(){
test();
}
$ nvcc -ccbin g++ -dc -O3 -arch=sm_35 -c fftStat.cu fftStat.o
$ nvcc -ccbin g++ -dlink -arch=sm_35 fftStat.o -o link.o -lcufft_static -lcudadevrt
$ g++ main.cpp link.o fftStat.o -L/usr/local/cuda-10.2/lib64 -lcufft_static -lcudart -lcudadevrt -lculibos -ldl -pthread -lrt -o run
Note that I've also rearranged some link orders to account for link dependencies. This may or may not matter depending on your exact version of g++
. Some of the needs here (e.g. -lcudadevrt
at the device-link step) may be a function of your actual code, which you haven't shown. For the above code, that item is not actually necessary.