I am looking for help getting started with a project involving CUDA. My goal is to have a project that I can compile in the native g++ compiler but uses CUDA code. I understand that I have to compile my CUDA code in nvcc compiler, but from my understanding I can somehow compile the CUDA code into a cubin file or a ptx file.
Here are my questions:
Assume the following:
I was able to resolve my issue with a couple of different posts including these ones. Don't forget that if you are using a 64 bit machine to link to the 64 bit library! It seams kind of obvious, but for clowns like me, that is something I forgot. Here is the make file that I now use... if you can digest this make file, you should be able to do what I was trying to do which was separate compilation of cuda code and other G++ code. Also keep in mind that you have to have the gcc, g++ compilers at certain versions (I am using g++-4.4 and it is working for me) Anyway, here is the make file...
all: program
program: cudacode.o
g++ -o program -L/usr/local/cuda/lib64 -lcuda -lcudart main.cpp cudacode.o
cudacode.o:
nvcc -c -arch=sm_20 cudacode.cu
clean: rm -f *.o program
Hopefully you can see that the first thing I do is compile the cudacode (that has been saved as a .cu
) using the nvcc
compiler and -c
option (also note that you may want to remove the -arch=sm_20
). This created a cudacode.o
. I then use the g++ compiler with the -o
option and link to the lib64 library and link the -lcuda
and -lcudart
libraries along with compiling my main.cpp
and then linking the cudacode.o
. Hope this helps someone!