+ Host* host_ = nullptr;
+ double flops_amount_ = 0.0;
+ double priority_ = 1.0;
+ double bound_ = 0.0;
+ std::string name_ = "";
+ std::string tracing_category_ = "";
+ std::atomic_int_fast32_t refcount_{0};
+
+ explicit Exec(sg_host_t host, double flops_amount);
+