Method valid

src/core/include/megbrain/comp_node.h:384–384

    bool operator!=(const CompNode& rhs) const { return !this->operator==(rhs); }

    bool valid() const { return m_impl; }

    //! get total and free memory on the computing device in bytes
    std::pair<size_t, size_t> get_mem_status_bytes() const {