static constexpr int c_nbnxnCpuIClusterSize = 4;
//! The i- and j-cluster size for GPU lists, 8 atoms for CUDA, set at compile time for OpenCL
-#if GMX_GPU == GMX_GPU_OPENCL
+#if GMX_GPU_OPENCL
static constexpr int c_nbnxnGpuClusterSize = GMX_OPENCL_NB_CLUSTER_SIZE;
#else
static constexpr int c_nbnxnGpuClusterSize = 8;