void (*copy_data_fun)(smx_action_t, void*, size_t),
void *data, int detached){
return SIMIX_comm_isend(src, rdv, task_size, rate, src_buff,
void (*copy_data_fun)(smx_action_t, void*, size_t),
void *data, int detached){
return SIMIX_comm_isend(src, rdv, task_size, rate, src_buff,