Copying struct from Host to Device error

Accelerated Computing CUDA CUDA Programming and Performance
1

I am facing the following issue when trying to pass a structure from Host to Device.
Code Snippet:

struct c0
{

	double  R0[3][10000],R1[3][10000],R2[3][10000],R3[3][10000],SC1,SC2;
}c0_;


struct kxis3 {
    int kb, lchk, nchk[100000], kchk, ktype[100000], kt[100], kt2[100]; 
	    
} kxis3_;


__global__ void zero_kernel(c0 *c1, kxis3 *k1)
{
	int i,j;
	double s1,s2,SCB,rr,SC;
	
        /*
        ..........................
        Rest of Kernel code
        */

}




int main()
{
      c0 *d_c1;
      cudaMalloc((void **)&d_c1, sizeof(c0));
/* Line 92 */      cudaMemcpy(d_c1,c0_,sizeof(c0),cudaMemcpyHostToDevice);
      cudaMalloc((void **)&d_k1, sizeof(struct kxis3));
/* Line 94 */      cudaMemcpy(d_k1,kxis3_,sizeof(struct kxis3),cudaMemcpyHostToDevice);
      zero_kernel<<<2,512 >>>(d_c1,d_k1);
/* Line 96 */      cudaMemcpy(c0_,d_c1,sizeof(struct c0),cudaMemcpyDeviceToHost);
/* Line 97 */      cudaMemcpy(kxis3_,d_k1,sizeof(struct kxis3),cudaMemcpyDeviceToHost);

}

On compilation I get the following errors

  • kernel_code.cu(92): error: no suitable conversion function from "c0" to "const void *" exists
  • kernel_code.cu(94): error: no suitable conversion function from "kxis3" to "const void *" exists
  • kernel_code.cu(96): error: no suitable conversion function from "c0" to "void *" exists
  • kernel_code.cu(97): error: no suitable conversion function from "kxis3" to "void *" exists

    • The line numbers refer to the cudaMemcpy statements

    2

    replace c0_ with &c0_…