o I h@s6ddlZddlmZdgZddZGdddeZdS)N) BaseSchedulerCubicSLcCst|t||SN)maxmin)xlohir ^/var/www/vscode/kcb/lib/python3.10/site-packages/torch/ao/pruning/scheduler/cubic_scheduler.py_clamp sr csFeZdZdZ       dfdd Zedd d Zd d ZZS)raSets the sparsity level of each parameter group to the final sl plus a given exponential function. .. math:: s_i = s_f + (s_0 - s_f) \cdot \left( 1 - \frac{t - t_0}{n\Delta t} \right)^3 where :math:`s_i` is the sparsity at epoch :math:`t`, :math;`s_f` is the final sparsity level, :math:`f(i)` is the function to be applied to the current epoch :math:`t`, initial epoch :math:`t_0`, and final epoch :math:`t_f`. :math:`\Delta t` is used to control how often the update of the sparsity level happens. By default, Args: sparsifier (BaseSparsifier): Wrapped sparsifier. init_sl (int, list): Initial level of sparsity init_t (int, list): Initial step, when pruning starts delta_t (int, list): Pruning frequency total_t (int, list): Total number of pruning steps initially_zero (bool, list): If True, sets the level of sparsity to 0 before init_t (:math:`t_0`). Otherwise, the sparsity level before init_t (:math:`t_0`) is set to init_sl(:math:`s_0`) last_epoch (int): The index of last epoch. Default: -1. verbose (bool): If ``True``, prints a message to stdout for each update. Default: ``False``. r dFc sV||_|||_|||_|||_|||_|||_t|||dSr) sparsifier_make_sure_a_listinit_slinit_tdelta_ttotal_tinitially_zerosuper__init__) selfrrrrrr last_epochverbose __class__r r r*s     zCubicSL.__init__cCsD|r||krdS|||d||||d}t|||}|S)a^ "Computes the current level of sparsity. Based on https://arxiv.org/pdf/1710.01878.pdf Args: s_0: Initial level of sparsity, :math:`s_i` s_f: Target level of sparsity, :math:`s_f` t: Current step, :math:`t` t_0: Initial step, :math:`t_0` dt: Pruning frequency, :math:`\Delta T` n: Pruning steps, :math:`n` initially_zero: Sets the level of sparsity to 0 before t_0. If False, sets to s_0 Returns: The sparsity level :math:`s_t` at the current step :math:`t` rg?)r )s_0s_ftt_0dtnrs_tr r r sparsity_compute_fn@s $ zCubicSL.sparsity_compute_fncs<jstdfddtjjjjjj DS)NzUTo get the last sparsity level computed by the scheduler, please use `get_last_sl()`.c s2g|]\}}}}}}j||j||||dqS))r!r"r#r$r%r&r)r(r).0initial_sparsityfinal_sparsity initial_epoch delta_epochinterval_epochsrrr r _s z"CubicSL.get_sl..) _get_sl_called_within_stepwarningswarnziprbase_slrrrrr/r r/r get_slYs  zCubicSL.get_sl)rrrrFrF)F) __name__ __module__ __qualname____doc__r staticmethodr(r6 __classcell__r r rr rs )r2base_schedulerr__all__r rr r r r s