-XBT_PRIVATE smx_activity_t SIMIX_execution_start(smx_actor_t issuer, const char *name,
- double flops_amount, double priority, double bound);
-XBT_PRIVATE smx_activity_t SIMIX_execution_parallel_start(const char* name, int host_nb, sg_host_t* host_list,
- double* flops_amount, double* bytes_amount, double amount,
- double rate, double timeout);