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My setup for CUDA Visual Studio 2010 and 2008 SP1 (required by CUDA). Parallel NSight 1.51 CUDA 4.0 RC or 3.2 and Thrust Basically, i followed the guide on: http://www.ademiller.com/blogs/tech/2011/03/using-cuda-and-thrust-with-visual-studio-2010/ I then proceeded to compile successfully without error messages. So i tried with more CUDA code examples from the web. These errors surfaced on Visual Studios. I can still compile successfully without error messages but these errors are only visually highlighted "Error:identifer "blockIdx" is undfined." "Error:identifer "blockDim" is undfined." "Error:identifer "threadIdx" is undfined." Here's the screenshot. https://i.sstatic.net/v1LFx.png Should i be concerned? Is it a Visual Studios bug or is my setup configuration wrong? Any help is appreciated. Thanks guys! P.S I'm very new to both Visual Studios and CUDA. // incrementArray.cu #include "Hello.h" #include <stdio.h> #include <assert.h> #include <cuda.h> void incrementArrayOnHost(float *a, int N) { int i; for (i=0; i < N; i++) a[i] = a[i]+1.f; } __global__ void incrementArrayOnDevice(float *a, int N) { int idx = blockIdx.x*blockDim.x + threadIdx.x; if (idx<N) a[idx] = a[idx]+1.f; } int main(void) { float *a_h, *b_h; // pointers to host memory float *a_d; // pointer to device memory int i, N = 10; size_t size = N*sizeof(float); // allocate arrays on host a_h = (float *)malloc(size); b_h = (float *)malloc(size); // allocate array on device cudaMalloc((void **) &a_d, size); // initialization of host data for (i=0; i<N; i++) a_h[i] = (float)i; // copy data from host

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