- ExecImpl* start(double flops_amount, double priority, double bound);
- ExecImpl* start(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
- const std::vector<double>& bytes_amounts);
+ ExecImpl& set_timeout(double timeout);
+ ExecImpl& set_bound(double bound);
+ ExecImpl& set_sharing_penalty(double sharing_penalty);