I'm trying to find the float3 element in an array with the highest x value (similar to this example):
// Find the variable with the max_x value // Binary predicate struct comp_float3_x{ __host__ __device__ bool operator()(const float3& lhs, const float3& rhs){ return lhs.x < rhs.x; } }; /*initialize*/ size_t n = 8; float3 *data = cudaMallocManaged(...); /*set random values*/ /*find the max x element*/ thrust::device_ptr<float3> d_ptr = thrust::device_pointer_cast(data); thrust::device_ptr<float3> it_ptr = thrust::max_element(thrust::device, d_ptr, d_ptr + n, comp_float3_x()); float3 result; cudaMemcpy(&result, it_ptr.get(), sizeof(float3), cudaMemcpyDeviceToHost); printf("%f, %f, %f", result.x, result.y, result.z); However when compiling and executed, I get the following error:
terminate called after throwing an instance of 'thrust::system::system_error' what(): extrema failed on 2nd step: invalid device function Aborted (core dumped) What am I doing wrong?
