Fix using CUDA in simgrid mode

mpi/examples/matrix_decomposition/mpi_cholesky_codelets.c

@@ -28,6 +28,8 @@ static struct starpu_codelet cl11 =
 	.cpu_funcs = {chol_cpu_codelet_update_u11},
 #ifdef STARPU_USE_CUDA
 	.cuda_funcs = {chol_cublas_codelet_update_u11},
+#elif defined(STARPU_SIMGRID)
+	.cuda_funcs = {(void*)1},
 #endif
 	.nbuffers = 1,
 	.modes = {STARPU_RW},
@@ -39,6 +41,8 @@ static struct starpu_codelet cl21 =
 	.cpu_funcs = {chol_cpu_codelet_update_u21},
 #ifdef STARPU_USE_CUDA
 	.cuda_funcs = {chol_cublas_codelet_update_u21},
+#elif defined(STARPU_SIMGRID)
+	.cuda_funcs = {(void*)1},
 #endif
 	.nbuffers = 2,
 	.modes = {STARPU_R, STARPU_RW},
@@ -50,6 +54,8 @@ static struct starpu_codelet cl22 =
 	.cpu_funcs = {chol_cpu_codelet_update_u22},
 #ifdef STARPU_USE_CUDA
 	.cuda_funcs = {chol_cublas_codelet_update_u22},
+#elif defined(STARPU_SIMGRID)
+	.cuda_funcs = {(void*)1},
 #endif
 	.nbuffers = 3,
 	.modes = {STARPU_R, STARPU_R, STARPU_RW | STARPU_COMMUTE},