Error compiling CUDA

Question

I'm trying to compile a C program to try parallel programming, when I try to compile it with nvcc compiler (Nvidia) it gives me those errors: ``` inicis.cu(3): error: attribute "global" does not apply here inicis.cu(3): error: incomplete type is not allowed inicis.cu(3): error: identifier "a" is undefined inicis.cu(3): error: expected a ")" inicis.cu(4): error: expected a ";" /usr/include/_locale.h(68): error: expected a declaration inicis.cu(20): error: type name is not allowed inicis.cu(21): error: type name is not allowed inicis.cu(22): error: type name is not allowed inicis.cu(41): error: identifier "dev_a" is undefined inicis.cu(42): error: identifier "dev_b" is undefined inicis.cu(43): error: identifier "dev_c" is undefined ``` It seems nvcc doesn't recognize the global attribute made by Nvidia... Here's my C program, it's pretty simple: ``` __global__ void operate(*memoria1, *memoria2) { memoria2[threadIdx.x] = memoria1[threadIdx.x] + 1; } int main(int args, char **argv){ int a…

Accepted Answer

I think if you make these changes:

```
__global__ void operate(int* memoria1, int* memoria2)
                         ^              ^
```

and:

```
cudaMalloc((void**) &memory_1, 5 * sizeof(int));
cudaMalloc((void**) &memory_2, 5 * sizeof(int));
           ^      ^
```

Your code will compile and run properly. Your results will be kind of wierd since the code doesn't actually initialize the values of `a` and `c` that are being operated on by the CUDA kernel. So you might want to initialize those.

Error compiling CUDA

Solution

Problem