Hi
As a student in numerical methods, I am trying to add a GPU accelerated Poisson Solver (Conjugate Gradient) in my DNS code.
However, I failed to call the C routine in my Fortran program. External Image
Here is the simple test program :
The tryf.f90 file :
program test
implicit none
print *,"Hello World from Fortran"
call helloworld()
call helloworldCUDA()
end program test
The tryc.c file :
#include <stdlib.h>
#include <stdio.h>
void helloworld_ ()
{
printf("Hello world !!\n");
};
And the trycuda.cu file :
#include <stdio.h>
#include <assert.h>
#include <cuda.h>
void helloworldCUDA_ ()
{
printf("Hello world CUDA Routine !!\n");
int deviceCount;
int dev;
cudaGetDeviceCount(&deviceCount);
dev=0;
cudaDeviceProp deviceProp;
cudaGetDeviceProperties(&deviceProp, dev);
printf("\nDevice %d: on %d \"%s\"\n", dev, deviceCount, deviceProp.name);
};
And the makefile is the following :
FC = gfortran
FFLAGS = -fdefault-real-8 -g
OBJ= \
tryc.o \
trycuda.o \
tryf.o
test: $(OBJ) makefile
$(FC) $(FFLAGS) -o test $(OBJ)
tryc.o: tryc.c makefile
gcc -g -o tryc.o -c tryc.c
trycuda.o: trycuda.cu makefile
nvcc -g trycuda.o -c trycuda.cu
tryf.o: tryf.f90 makefile
$(FC) $(FFLAGS) -o tryf.o -c tryf.f90
clean:
\rm *.mod *.o
If I try compilling without the CUDA part, the hello world in C works pretty well. But when adding the cuda compilation, I got the following message :
moomba@Freedom:~/Bureau/essaicuda/Test_Modules$ make -f makefile
gcc -g -o tryc.o -c tryc.c
nvcc -g trycuda.o -c trycuda.cu
gfortran -fdefault-real-8 -g -o tryf.o -c tryf.f90
gfortran -fdefault-real-8 -g -o test tryc.o trycuda.o tryf.o
trycuda.o: In function `__sti____cudaRegisterAll_40_tmpxft_00002e24_00000000_4_e
ssai_cpp1_ii_cec5f5d9':
/tmp/tmpxft_00002e24_00000000-1_essai.cudafe1.stub.c:7: undefined reference to `__cudaRegisterFatBinary'
trycuda.o: In function `__ftexfetch':
/usr/local/cuda/bin/../include/texture_fetch_functions.h:1961: undefined reference to `__cudaTextureFetch'
trycuda.o: In function `__utexfetch':
/usr/local/cuda/bin/../include/texture_fetch_functions.h:1952: undefined reference to `__cudaTextureFetch'
trycuda.o: In function `__itexfetch':
/usr/local/cuda/bin/../include/texture_fetch_functions.h:1943: undefined reference to `__cudaTextureFetch'
trycuda.o: In function `__ftexfetchi':
/usr/local/cuda/bin/../include/texture_fetch_functions.h:1934: undefined reference to `__cudaTextureFetch'
trycuda.o: In function `__utexfetchi':
/usr/local/cuda/bin/../include/texture_fetch_functions.h:1925: undefined reference to `__cudaTextureFetch'
trycuda.o:/usr/local/cuda/bin/../include/texture_fetch_functions.h:1916: more undefined references to `__cudaTextureFetch' follow
trycuda.o: In function `__cudaUnregisterBinaryUtil':
/usr/local/cuda/bin/../include/crt/host_runtime.h:176: undefined reference to `__cudaUnregisterFatBinary'
trycuda.o: In function `helloworldCUDA_()':
/home/moomba/Bureau/essaicuda/Test_Modules/trycuda.cu:10: undefined reference to `cudaGetDeviceCount'
/home/moomba/Bureau/essaicuda/Test_Modules/trycuda.cu:14: undefined reference to `cudaGetDeviceProperties'
trycuda.o:(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
collect2: ld a retourné 1 code d'état d'exécution
make: *** [pospro_pade6] Erreur 1
moomba@Freedom:~/Bureau/essaicuda/Test_Modules$
Is there a way to import CUDA C code in Fortran program without using the portland fortran beta cuda compiler ? :)
Could someone tell me how to proceed ? External Image
