Corrected nvcc compute line

src/Makevars

@@ -2,7 +2,7 @@ OBJECTS = gpuvariog.o GpuVariogram.o KernelUtils.o
 
 CUDA_HOME=/usr/local/cuda
 NVCC=$(CUDA_HOME)/bin/nvcc
-NVCC_FLAGS=-O3 -use_fast_math -Xcompiler "-fPIC" -gencode arch=compute_20,compute_30,compute_35,code=sm_20,sm_30,sm_35
+NVCC_FLAGS=-O3 -use_fast_math -Xcompiler "-fPIC" -gencode arch=compute_20,code=sm_20 -gencode arch=compute_30,code=sm_30 -gencode arch=compute_35,code=sm_35
 PKG_LIBS=-L$(CUDA_HOME)/lib64 -Wl,-rpath,$(CUDA_HOME)/lib64 -lcudart
 
 %.o: %.cu