CUDA编译和链接

Question

I have host files (say h_A.cpp, etc) which can be compiled by host compiler ( g++ ), device files (say d_A.cu, etc) to be compiled by device compiler ( nvcc ) and host-device files ie, host functions, kernel call, etc (say h_d_A.cu) to be compiled by device compiler ( nvcc ).

Device side compilation

nvcc -arch=sm_20 -dc d_A.cu -o d_A.o $(INCLUDES)

/* -dc since the file may call / have relocatable device functions */

Host side compilation

g++ -c h_A.cpp -o h_A.o $(INCLUDES, FLAGS)

Device Linkage as suggested here

nvcc -arch=sm_20 -dlink d_A.o -o link.o

/* Linkage due to relocatable device functions */

I am using Makefile for the project. Now, the query i have is, how do i form the final executable ? I have tried,

1. g++ h_A.o link.o –L<path> -lcudart
Error: relocation 0 has invalid symbol index 10
2. g++ h_A.o link.o –lcudadevrt –L<path> –lcudart
Error: undefined reference to phase2(int*, int) //where phase2 is my __global__ kernel.

Answer 1

Sorry, Found out the problem i missed to include device objects while forming the final executable.

corrected syntax.

g++ h_A.o d_A.o link.o –L<path> -lcudart