- struct timespec start_time, end_time; //time mesure
- struct timespec end_time_intern; //time mesure
- struct timespec start_time_reduce, end_time_reduce; //time mesure
+ double start_time, end_time; //time mesure
+ double end_time_intern; //time mesure
+ double start_time_reduce, end_time_reduce; //time mesure