Method copy

XM/include/Utils/memory.h:348–361

    }

    void copy(const DeviceDnTen<T>& other){
        gpu_id = other.gpu_id;
        num_dims = other.num_dims;
        total_size = other.total_size;

        // TODO: here we need more safe code
        this->dimensions = (size_s*)malloc(sizeof(size_s) * num_dims);
        std::memcpy(dimensions, other.dimensions, sizeof(size_s) * num_dims);
        
        this->allocate();
        CHECK_CUDA(cudaDeviceSynchronize());
        cudaMemcpy(vals, other.vals, sizeof(T) * total_size, cudaMemcpyDeviceToDevice);
        CHECK_CUDA(cudaDeviceSynchronize());
    }

    inline void allocate() {