End of training

README.md

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+---
+base_model: meta-llama/Llama-2-7b-chat-hf
+tags:
+- generated_from_trainer
+model-index:
+- name: sparse_llama_7b_refined_web_90p_2024-03-23
+  results: []
+---
+
+<!-- This model card has been generated automatically according to the information the Trainer had access to. You
+should probably proofread and complete it, then remove this comment. -->
+
+# sparse_llama_7b_refined_web_90p_2024-03-23
+
+This model is a fine-tuned version of [meta-llama/Llama-2-7b-chat-hf](https://huggingface.co/meta-llama/Llama-2-7b-chat-hf) on the None dataset.
+It achieves the following results on the evaluation set:
+- Loss: 2.9569
+
+## Model description
+
+More information needed
+
+## Intended uses & limitations
+
+More information needed
+
+## Training and evaluation data
+
+More information needed
+
+## Training procedure
+
+### Training hyperparameters
+
+The following hyperparameters were used during training:
+- learning_rate: 1e-05
+- train_batch_size: 1
+- eval_batch_size: 1
+- seed: 0
+- distributed_type: multi-GPU
+- num_devices: 4
+- gradient_accumulation_steps: 8
+- total_train_batch_size: 32
+- total_eval_batch_size: 4
+- optimizer: Adam with betas=(0.9,0.999) and epsilon=1e-08
+- lr_scheduler_type: linear
+- training_steps: 200
+
+### Training results
+
+| Training Loss | Epoch | Step | Validation Loss |
+|:-------------:|:-----:|:----:|:---------------:|
+| 5.2575        | 0.01  | 25   | 5.1578          |
+| 4.636         | 0.02  | 50   | 4.5777          |
+| 3.9255        | 0.02  | 75   | 3.9336          |
+| 3.4456        | 0.03  | 100  | 3.5406          |
+| 3.2456        | 0.04  | 125  | 3.3417          |
+| 3.0263        | 0.05  | 150  | 3.2372          |
+| 2.898         | 0.06  | 175  | 3.1641          |
+| 2.9902        | 0.06  | 200  | 3.0936          |
+
+
+### Framework versions
+
+- Transformers 4.36.2
+- Pytorch 2.1.1+cu121
+- Datasets 2.15.0
+- Tokenizers 0.15.2

config.json

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+  "torch_dtype": "bfloat16",
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+  "us_sparse_regularization": false,
+  "use_cache": true,
+  "use_graceful_regularization": false,
+  "use_relu": false,
+  "use_sparse_model": true,
+  "use_sparse_predictor": false,
+  "use_sparse_regularization": false,
+  "vocab_size": 32000
+}

generation_config.json

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+  "do_sample": true,
+  "eos_token_id": 2,
+  "max_length": 4096,
+  "pad_token_id": 0,
+  "temperature": 0.6,
+  "top_p": 0.9,
+  "transformers_version": "4.36.2"
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ugly_utils.py

@@ -0,0 +1,1089 @@
+from typing import Optional, Tuple
+import torch
+import torch.nn as nn
+from torch.nn import MSELoss
+import matplotlib.pyplot as plt
+import numpy as np
+import os
+import time
+import os
+import copy
+import warnings
+from datasets import Dataset
+from peft import PeftModel
+from transformers import TrainerCallback
+import matplotlib.pyplot as plt
+import numpy as np
+import time
+import os
+import copy
+from transformers import Trainer
+from typing import Any, Dict, Union
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+
+# from experiments.models.sparse_silu.utils import get_mlp_class, get_decoder_class
+
+
+from utils.utils import is_running_deepspeed, is_mainprocess, ds_print, get_model_type, get_model_type_from_name
+from utils.constants import MISTRAL
+from transformers.configuration_utils import PretrainedConfig
+
+# Mistral
+from transformers.models.mistral.modeling_mistral import MistralMLP, MistralDecoderLayer, MistralConfig, MistralForCausalLM, MistralModel
+from experiments.models.sparse_mistral.svd_router import (
+    low_rank_approximation,
+)
+
+# Llama
+from transformers.models.llama.modeling_llama import (
+    LlamaModel,
+    LlamaMLP,
+    LlamaDecoderLayer,
+    LlamaConfig,
+    LlamaForCausalLM,
+)
+
+
+def get_mlp_class(model):
+    model_type = get_model_type(model)
+    return MistralSparseSiluMLP if model_type == MISTRAL else LlamaSparseSiluMLP
+
+
+def get_decoder_class(model):
+    model_type = get_model_type(model)
+    return SparseMistralDecoderLayer if model_type == MISTRAL else LlamaSparseDecoderLayer
+
+
+def get_model_class(model):
+    model_type = get_model_type(model)
+    return MistralModel if model_type == MISTRAL else LlamaModel
+
+
+class SparseSiLU(nn.SiLU):
+    def __init__(self, threshold):
+        super(SparseSiLU, self).__init__()
+        self.threshold = threshold
+        self.m = nn.Threshold(self.threshold, 0)
+
+    def set_new_threshold(self, threshold):
+        self.threshold = threshold
+        self.m = nn.Threshold(threshold, 0)
+
+    def forward(self, x):
+        act = super(SparseSiLU, self).forward(x)
+        return self.m(act) - self.m(-act)
+
+
+def get_sparse_config(
+    config: PretrainedConfig,
+    model_type: str = None,
+    use_sparse_model=False,
+    use_sparse_predictor=False,
+    use_sparse_regularization=False,
+    use_graceful_regularization=False,
+    thresholds=None,
+):
+    if model_type == MISTRAL:
+        new_config = SparseMistralConfig()
+    else:
+        new_config = SparseLlamaConfig()
+    new_config.__dict__.update(config.__dict__)
+    config = new_config
+    config.use_sparse_model = use_sparse_model
+    config.use_sparse_predictor = use_sparse_predictor
+    config.use_sparse_regularization = use_sparse_regularization
+    config.use_graceful_regularization = use_graceful_regularization
+    config.thresholds = thresholds
+
+    return config
+
+
+def apply_sparse_silu_mlp(
+    model,
+    config,
+    use_sparse_regularization: bool = False,
+):
+    SparseMLP = get_mlp_class(model)
+    for layer in model.model.layers:
+        original_mlp = layer.mlp
+        new_mlp = SparseMLP(config, use_sparse_regularization=use_sparse_regularization)
+        new_mlp.gate_proj = original_mlp.gate_proj
+        new_mlp.up_proj = original_mlp.up_proj
+        new_mlp.down_proj = original_mlp.down_proj
+        layer.mlp = new_mlp
+
+
+def apply_sparse_decoder_layer(
+    model,
+    config,
+    init_svd: bool = True,
+):
+    Model = get_model_type(model)
+    SparseMLP = get_mlp_class(model)
+    DecoderLayer = get_decoder_class(model)
+
+    assert isinstance(model.model, Model), "model.model must be a MistralModel."
+    new_layers = []
+    for layer_idx, layer in enumerate(model.model.layers):
+        if isinstance(layer.mlp, SparseMLP):
+            new_layers.append(
+                DecoderLayer(
+                    config=config,
+                    layer_idx=layer_idx,
+                    decoder_layer=layer,
+                    init_svd=init_svd,
+                )
+            )
+            print(f"{layer_idx}th mlp layer activation: {layer.mlp.sparse_act_fn}")
+        else:
+            new_layers.append(layer)
+    model.model.layers = nn.ModuleList(new_layers)
+
+
+def enable_sparse_predictor(
+    model,
+):
+    DecoderLayer = get_decoder_class(model)
+    for layer_idx, layer in enumerate(model.model.layers):
+        if isinstance(layer, DecoderLayer):
+            layer.use_sparse_predictor = True
+
+
+def disable_sparse_predictor(
+    model,
+):
+    DecoderLayer = get_decoder_class(model)
+    for layer_idx, layer in enumerate(model.model.layers):
+        if isinstance(layer, DecoderLayer):
+            layer.use_sparse_predictor = False
+
+
+def activate_stats(model, is_collect_histogram: bool = True):
+    SparseMLP = get_mlp_class(model)
+    for layer in model.model.layers:
+        if isinstance(layer.mlp, SparseMLP):
+            layer.mlp.activate_stats(is_collect_histogram=is_collect_histogram)
+
+
+def deactivate_stats(
+    model,
+):
+    SparseMLP = get_mlp_class(model)
+    for layer in model.model.layers:
+        if isinstance(layer.mlp, SparseMLP):
+            layer.mlp.deactivate_stats()
+
+
+def enable_sparse_silu(model):
+    print("Enabling SparseSilu")
+    SparseMLP = get_mlp_class(model)
+    for i, layer in enumerate(model.model.layers):
+        if isinstance(layer.mlp, SparseMLP):
+            layer.mlp.kill_sparse_swish_outputs = True
+
+
+def disable_sparse_silu(model):
+    print("Disabling SparseSilu")
+    SparseMLP = get_mlp_class(model)
+    for i, layer in enumerate(model.model.layers):
+        if isinstance(layer.mlp, SparseMLP):
+            layer.mlp.kill_sparse_swish_outputs = False
+
+
+def print_dead_neuron_stats(model):
+    SparseMLP = get_mlp_class(model)
+    total_sparsity = 0
+    counts = 0
+    for i, layer in enumerate(model.model.layers):
+        if isinstance(layer.mlp, SparseMLP):
+            dead_percentage = layer.mlp.dead_percentage * 100
+            agg_sparsity = layer.mlp.agg_sparsity * 100
+            ds_print(f"layer {i} sparsity: {dead_percentage:.3f}%")
+            ds_print(f"layer {i} agg sparsity: {agg_sparsity:.3f}%")
+            total_sparsity += dead_percentage
+            counts += 1
+
+    ds_print(f"Total sparsity: {total_sparsity/counts: .3f}%")
+    return total_sparsity / counts
+
+
+def get_sparse_layers(model):
+    SparseMLP = get_mlp_class(model)
+    sparse_layers = [m.mlp for m in model.layers() if isinstance(m.mlp, SparseMLP)]
+    return sparse_layers
+
+
+def get_threshold(bin_edges: torch.tensor, histogram_counts: torch.tensor, sparsity_level: float):  # Only for L1 Regularization
+    assert len(bin_edges.shape) == len(histogram_counts.shape) == 1, "bin_edges and histogram are expected to be 1-dimensional."
+    histogram_counts /= histogram_counts.sum()
+    threshold_idx = torch.searchsorted(histogram_counts.cumsum(0), sparsity_level, side="right")
+
+    return bin_edges[threshold_idx]
+
+
+def set_regularization_threshold(model, threshold: float = 0.1):
+    SparseMLP = get_mlp_class(model)
+    for i, layer in enumerate(model.model.layers):
+        if isinstance(layer.mlp, SparseMLP) and layer.mlp.is_stats:  # Can set the threshold only the relevant statistics is collected.
+            layer.mlp.regularization_threshold = threshold  # TODO: find better param
+
+
+def set_sparse_threshold(model, sparsity_level: float, use_relu: bool = False):
+    SparseMLP = get_mlp_class(model)
+    for i, layer in enumerate(model.model.layers):
+        if isinstance(layer.mlp, SparseMLP) and layer.mlp.is_stats:  # Can set the threshold only the relevant statistics is collected.
+            if use_relu:
+                layer.mlp.sparse_act_fn = nn.ReLU()
+                layer.mlp.use_relu = True
+            else:
+                layer.mlp.dead_threshold = get_threshold(
+                    layer.mlp.histogram_bins,
+                    layer.mlp.post_act_hist_counts,
+                    sparsity_level,
+                )
+                layer.mlp.sparse_act_fn.set_new_threshold(layer.mlp.dead_threshold)
+                layer.mlp.regularization_threshold = layer.mlp.dead_threshold * 1.2  # TODO: find better param
+
+
+def plot_histogram(
+    bin_edges,
+    histogram_counts: torch.tensor,
+    title: str = "Activation Distribution",
+    fig_dir: str = "figures",
+):
+    plt.bar(bin_edges[:-1], histogram_counts, width=np.diff(bin_edges), edgecolor="black")
+    plt.title(title)
+    plt.xlabel("Activation Value")
+    plt.ylabel("Frequency")
+    os.makedirs(fig_dir, exist_ok=True)
+    plt.savefig(f"{fig_dir}/{title}.png")
+    # plt.show()
+    plt.clf()
+
+
+def plot_act(model, fig_dir: str = "figures"):
+    SparseMLP = get_mlp_class(model)
+
+    for i, layer in enumerate(model.model.layers):
+        if isinstance(layer.mlp, SparseMLP) and layer.mlp.is_stats:  # Can set the threshold only the relevant statistics is collected.
+            plot_title = f"Layer: {i} Pre-Activation Distribution"
+            plot_histogram(layer.mlp.histogram_bins, layer.mlp.pre_act_hist_counts, plot_title)
+
+            plot_title = f"Layer: {i} Post-Activation Absolute Distribution"
+            plot_histogram(layer.mlp.histogram_bins, layer.mlp.post_act_hist_counts, plot_title)
+
+
+def save_act_hist(model, filename="/scr/jay/models/mistral/pre_finetune/cola_act_hist.pt"):
+    SparseMLP = get_mlp_class(model)
+    os.makedirs(os.path.dirname(filename), exist_ok=True)
+    act_dict = {}
+    for i, layer in enumerate(model.model.layers):
+        if isinstance(layer.mlp, SparseMLP) and layer.mlp.is_stats:  # Can set the threshold only the relevant statistics is collected.
+            act_dict[i] = (
+                layer.mlp.histogram_bins,
+                layer.mlp.pre_act_hist_counts,
+                layer.mlp.post_act_hist_counts,
+            )
+    print("Saving activation histograms...\n\n\n")
+    torch.save(act_dict, filename)
+
+
+def load_act_hist(model, filename="/scr/jay/models/mistral/pre_finetune/cola_act_hist.pt"):
+    assert os.path.exists(filename), f"{filename} does not exist when loading pre/post-activation histogram of SparseMistralSiluMLP."
+    SparseMLP = get_mlp_class(model)
+
+    print("Loading activation histograms...\n\n\n")
+
+    act_dict = torch.load(filename)
+    for i, layer in enumerate(model.model.layers):
+        if isinstance(layer.mlp, SparseMLP) and layer.mlp.is_stats:  # Can set the threshold only the relevant statistics is collected.
+            (
+                layer.mlp.histogram_bins,
+                layer.mlp.pre_act_hist_counts,
+                layer.mlp.post_act_hist_counts,
+            ) = act_dict[i]
+
+
+def enable_last_k_modules(model, start_module_idx: int):
+    assert 32 > start_module_idx >= 0
+    new_modules = []
+    new_idx = 0
+    for idx in range(start_module_idx, len(model.model.original_layers)):
+        module = model.model.original_layers[idx]
+        module.layer_idx = new_idx
+        module.self_attn.layer_idx = new_idx
+        new_modules.append(module)
+        new_idx += 1
+        print(module.layer_idx)
+
+    model.model.layers = nn.ModuleList(new_modules)
+
+
+def enable_first_k_modules(model, end_module_idx: int):
+    assert 32 > end_module_idx >= 0
+    new_modules = []
+    new_idx = 0
+    for idx in range(0, end_module_idx + 1):
+        module = model.model.original_layers[idx]
+        module.layer_idx = new_idx
+        module.self_attn.layer_idx = new_idx
+        new_modules.append(module)
+        new_idx += 1
+        print(module.layer_idx)
+
+    model.model.layers = nn.ModuleList(new_modules)
+
+
+# MISTRAL
+
+
+class MistralSparseSiluMLP(MistralMLP):
+    def __init__(self, config, *args, **kwargs):
+        super().__init__(config)
+        self.swish_outputs = None
+        self.relu = nn.ReLU()
+
+        self.kill_sparse_swish_outputs = False
+        self.dead_percentage = 0
+        self.is_stats = False
+        self.visit_counts = 0
+
+        # Hyperparameters to tune
+        self.dead_threshold = kwargs.pop("dead_threshold", 0)
+        self.use_sparse_regularization = kwargs.pop("use_sparse_regularization", True)
+        self.regularization_type = kwargs.pop("regularization_type", "L1 regularization")
+        self.regularization_threshold = kwargs.pop("regularization_threshold", 0.5)
+        self.use_relu = kwargs.pop("use_relu", False)
+        self.activation_norm = None
+
+        # Activation Histograms
+        self.is_collect_histogram = False
+        num_bins = 1000
+        self.histogram_bins = torch.linspace(-1, 1, num_bins - 2)
+        self.histogram_bins = torch.cat([torch.tensor([-torch.inf]), self.histogram_bins, torch.tensor([torch.inf])])
+        self.pre_act_hist_counts = torch.zeros(num_bins - 1)
+        self.post_act_hist_counts = torch.zeros(num_bins - 1)
+        self.t = 0
+        self.count = 0
+        self.agg_sparsity = 0
+
+        # Sparse activation function
+        self.sparse_act_fn = SparseSiLU(threshold=self.dead_threshold)
+
+    def activate_stats(self, is_collect_histogram: bool = True):
+        self.is_stats = True
+        self.dead_percentage = 0
+        self.visit_counts = 0
+        self.is_collect_histogram = is_collect_histogram
+        self.histogram_counts = torch.zeros(2000)  # .to(self.down_proj.weight.device)
+
+    def deactivate_stats(self):
+        self.is_stats = False
+
+    def collect_stats(self, pre_activation, post_activation):
+        start_time = time.time()
+        pre_activation = pre_activation.float().cpu().detach()
+        post_activation = post_activation.float().cpu().detach()
+        # self.histogram_bins=self.histogram_bins.to(pre_activation.device).type(pre_activation.dtype)
+        self.pre_act_hist_counts += torch.histogram(pre_activation, bins=self.histogram_bins)[0]
+        self.post_act_hist_counts += torch.histogram(torch.abs(post_activation), bins=self.histogram_bins)[0]
+        self.t += time.time() - start_time
+        # if self.visit_counts % 30 == 0:
+        #     print(f"Time taken to collect stats: {self.t}s.")
+
+    def forward(
+        self,
+        x,
+        sp_mask: torch.tensor = None,
+    ):
+        """
+        If kill_sparse_swish_outputs is set to False, this layer functions exactly like a normal MLP layer.
+        """
+        if sp_mask != None:  # When sparse mask is given
+            return self.down_proj(
+                self.sparse_act_fn(self.gate_proj(x) * sp_mask) * self.up_proj(x)
+            )  # Todo: This doesn't accelerate runtime (instead slowing down)
+
+        elif self.use_relu:
+            post_act = self.relu(self.gate_proj(x))
+            self.count += 1
+            if self.count <= 1:
+                print("USING RELU!!!!")
+
+            if self.is_stats:
+                dead_neurons = post_act == 0
+                dead_percentage = dead_neurons.float().mean()
+                agg_sparsity = dead_neurons.all(dim=0).float().mean()
+
+                self.dead_percentage = (self.dead_percentage * self.visit_counts + dead_percentage) / (self.visit_counts + 1)
+                self.agg_sparsity = (self.agg_sparsity * self.visit_counts + agg_sparsity) / (self.visit_counts + 1)
+                self.visit_counts += 1
+
+            return self.down_proj(post_act * self.up_proj(x))
+
+        else:
+            self.count += 1
+            if self.count <= 1:
+                ds_print("USING SparseSILU!!!!")
+            pre_act = self.gate_proj(x)
+            post_act = self.act_fn(pre_act)
+            if self.kill_sparse_swish_outputs:
+                dead_neurons = post_act.abs() <= self.dead_threshold
+                # print("pre act sparsity: ", (pre_act==0).float().mean())
+
+                dead_percentage = dead_neurons.float().mean()
+                agg_sparsity = dead_neurons.all(dim=0).float().mean()
+
+                if self.is_stats:
+                    self.dead_percentage = (self.dead_percentage * self.visit_counts + dead_percentage) / (self.visit_counts + 1)
+                    self.agg_sparsity = (self.agg_sparsity * self.visit_counts + agg_sparsity) / (self.visit_counts + 1)
+                    self.visit_counts += 1
+
+                    self.a = dead_percentage
+
+                    # Collect histogram stats
+                    if self.is_collect_histogram and pre_act.eq(0).float().mean() < 0.99:  # Padded dataset
+                        self.collect_stats(pre_act, post_act)
+
+                if self.count <= 1:
+                    ds_print("KILL!")
+                post_act[dead_neurons] = 0
+
+            out = self.down_proj(post_act * self.up_proj(x))
+            if self.use_sparse_regularization:
+                if self.regularization_type == "L1 regularization":
+                    self.activation_norm = torch.abs(post_act)[torch.abs(post_act) < self.regularization_threshold].mean()
+                elif self.regularization_type == "L2 regularization":
+                    self.activation_norm = torch.sqrt(torch.square(post_act)[torch.abs(post_act) < self.regularization_threshold]).mean()
+
+            return out
+
+
+class SparseMistralDecoderLayer(MistralDecoderLayer):
+    def __init__(
+        self,
+        config: MistralConfig,
+        layer_idx: int,
+        decoder_layer: MistralDecoderLayer,
+        init_svd: bool = True,
+        *args,
+        **kwargs,
+    ):
+        assert isinstance(decoder_layer.mlp, MistralSparseSiluMLP), f"{type(decoder_layer.mlp)} should MistralSparseSiluMLP."
+
+        super().__init__(config, layer_idx)
+        self.hidden_size = config.hidden_size
+        self.intermediate_size = config.intermediate_size
+
+        self.init_svd = init_svd
+        self.self_attn = decoder_layer.self_attn
+
+        self.mlp = decoder_layer.mlp
+        self.input_layernorm = decoder_layer.input_layernorm
+        self.post_attention_layernorm = decoder_layer.post_attention_layernorm
+
+        # Sparse predictor for mlp (initialized with SVD decomposed matrix)
+        self.low_rank = kwargs.pop("low_rank", 64)
+        self.sparse_act_func = decoder_layer.mlp.sparse_act_fn
+
+        print(f"Setting {layer_idx}th mlp layer's sparse predictor... svd init: {init_svd}")
+        self.sp_mlp = low_rank_approximation(
+            decoder_layer.mlp.gate_proj,
+            act_func=self.sparse_act_func,
+            init_svd=init_svd,
+        )
+        self.use_async = kwargs.pop("use_async", False)
+        self.use_sparse_predictor = False
+        self.distill_loss = None
+
+    def forward(
+        self,
+        hidden_states: torch.Tensor,
+        attention_mask: Optional[torch.Tensor] = None,
+        position_ids: Optional[torch.LongTensor] = None,
+        past_key_value: Optional[Tuple[torch.Tensor]] = None,
+        output_attentions: Optional[bool] = False,
+        use_cache: Optional[bool] = False,
+        **kwargs,
+    ) -> Tuple[torch.FloatTensor, Optional[Tuple[torch.FloatTensor, torch.FloatTensor]]]:
+        print("hidden_states shape: ", hidden_states.shape)
+        if "padding_mask" in kwargs:
+            warnings.warn(
+                "Passing `padding_mask` is deprecated and will be removed in v4.37. Please make sure use `attention_mask` instead.`"
+            )
+
+        residual = hidden_states
+        sp_mask = None
+
+        if self.use_async:
+            sp_mask = self.sp_mlp(hidden_states)
+
+        hidden_states = self.input_layernorm(hidden_states)
+
+        # Self Attention
+        hidden_states, self_attn_weights, present_key_value = self.self_attn(
+            hidden_states=hidden_states,
+            attention_mask=attention_mask,
+            position_ids=position_ids,
+            past_key_value=past_key_value,
+            output_attentions=output_attentions,
+            use_cache=use_cache,
+        )
+        hidden_states = residual + hidden_states
+
+        # Fully Connected
+        residual = hidden_states
+        hidden_states = self.post_attention_layernorm(hidden_states)
+
+        if not self.use_async:
+            sp_mask = self.sp_mlp(hidden_states)
+
+        # Compute distillation loss
+        gating_output = self.mlp.sparse_act_fn(self.mlp.gate_proj(hidden_states))
+        loss_func = MSELoss()
+        self.distill_loss = loss_func(sp_mask, gating_output)
+
+        # Convert sp mask into binary form
+        sp_mask = sp_mask > 0
+
+        if self.training:
+            sp_mask = None
+        # if not self.use_sparse_predictor:
+        #     sp_mask = None
+
+        hidden_states = self.mlp(hidden_states, sp_mask)
+        hidden_states = residual + hidden_states
+
+        outputs = (hidden_states,)
+
+        if output_attentions:
+            outputs += (self_attn_weights,)
+
+        if use_cache:
+            outputs += (present_key_value,)
+
+        return outputs
+
+
+class SparseMistralConfig(MistralConfig):
+    model_type = "sparse_mistral"
+
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+
+
+class SparseMistralforCausalLM(MistralForCausalLM):
+    config_class = SparseMistralConfig
+
+    def __init__(self, config):
+        super().__init__(config)
+        self.config = config
+        if config.use_sparse_model:
+            self.apply_sparse_mlp()
+            if config.thresholds is not None:
+                for idx, m in enumerate(self.model.layers):
+                    if isinstance(m.mlp, MistralSparseSiluMLP):
+                        m.mlp.dead_threshold = config.thresholds[idx]
+                        m.mlp.sparse_act_fn.set_new_threshold(m.mlp.dead_threshold)
+                        m.mlp.kill_sparse_swish_outputs = True
+                        m.mlp.use_relu = config.use_relu
+        if config.use_sparse_predictor:
+            self.apply_sparse_predictor(init_svd=config.init_svd)
+
+    def apply_sparse_mlp(self):
+        apply_sparse_silu_mlp(
+            self,
+            config=self.config,
+            use_sparse_regularization=self.config.use_sparse_regularization,
+        )
+
+    def apply_sparse_predictor(self, init_svd: bool = True):
+        apply_sparse_decoder_layer(self, config=self.config, init_svd=init_svd)
+
+
+# LLAMA
+
+
+class SparseLlamaConfig(LlamaConfig):
+    model_type = "sparse_llama"
+
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+
+
+class SparseLlamaForCausalLM(LlamaForCausalLM):
+    config_class = SparseLlamaConfig
+
+    def __init__(self, config):
+        super().__init__(config)
+        self.config = config
+        if config.use_sparse_model:
+            self.apply_sparse_mlp()
+            if config.thresholds is not None:
+                for idx, m in enumerate(self.model.layers):
+                    if isinstance(m.mlp, LlamaSparseSiluMLP):
+                        m.mlp.dead_threshold = config.thresholds[idx]
+                        m.mlp.sparse_act_fn.set_new_threshold(m.mlp.dead_threshold)
+                        m.mlp.kill_sparse_swish_outputs = True
+                        m.mlp.use_relu = config.use_relu
+        if config.use_sparse_predictor:
+            self.apply_sparse_predictor(init_svd=config.init_svd)
+
+    def apply_sparse_mlp(self):
+        apply_sparse_silu_mlp(
+            self,
+            config=self.config,
+            use_sparse_regularization=self.config.use_sparse_regularization,
+        )
+
+    def apply_sparse_predictor(self, init_svd: bool = True):
+        apply_sparse_decoder_layer(self, config=self.config, init_svd=init_svd)
+
+
+class LlamaSparseSiluMLP(LlamaMLP):
+    def __init__(self, config, *args, **kwargs):
+        super().__init__(config)
+        self.swish_outputs = None
+        self.relu = nn.ReLU()
+
+        self.kill_sparse_swish_outputs = False
+        self.dead_percentage = 0
+        self.is_stats = False
+        self.visit_counts = 0
+
+        # Hyperparameters to tune
+        self.dead_threshold = kwargs.pop("dead_threshold", 0)
+        self.use_sparse_regularization = kwargs.pop("use_sparse_regularization", True)
+        self.regularization_type = kwargs.pop("regularization_type", "L1 regularization")
+        self.regularization_threshold = kwargs.pop("regularization_threshold", 0.5)
+        self.use_relu = kwargs.pop("use_relu", False)
+        self.activation_norm = None
+
+        # Activation Histograms
+        self.is_collect_histogram = False
+        num_bins = 1000
+        self.histogram_bins = torch.linspace(-1, 1, num_bins - 2)
+        self.histogram_bins = torch.cat([torch.tensor([-torch.inf]), self.histogram_bins, torch.tensor([torch.inf])])
+        self.pre_act_hist_counts = torch.zeros(num_bins - 1)
+        self.post_act_hist_counts = torch.zeros(num_bins - 1)
+        self.t = 0
+        self.count = 0
+        self.agg_sparsity = 0
+
+        # Sparse activation function
+        self.sparse_act_fn = SparseSiLU(threshold=self.dead_threshold)
+
+    def activate_stats(self, is_collect_histogram: bool = True):
+        self.is_stats = True
+        self.dead_percentage = 0
+        self.visit_counts = 0
+        self.is_collect_histogram = is_collect_histogram
+        self.histogram_counts = torch.zeros(2000)  # .to(self.down_proj.weight.device)
+
+    def deactivate_stats(self):
+        self.is_stats = False
+
+    def collect_stats(self, pre_activation, post_activation):
+        start_time = time.time()
+        pre_activation = pre_activation.float().cpu().detach()
+        post_activation = post_activation.float().cpu().detach()
+        # self.histogram_bins=self.histogram_bins.to(pre_activation.device).type(pre_activation.dtype)
+        self.pre_act_hist_counts += torch.histogram(pre_activation, bins=self.histogram_bins)[0]
+        self.post_act_hist_counts += torch.histogram(torch.abs(post_activation), bins=self.histogram_bins)[0]
+        self.t += time.time() - start_time
+        # if self.visit_counts % 30 == 0:
+        # print(f"Time taken to collect stats: {self.t}s.")
+
+    def forward(
+        self,
+        x,
+        sp_mask: torch.tensor = None,
+    ):
+        """
+        If kill_sparse_swish_outputs is set to False, this layer functions exactly like a normal MLP layer.
+        """
+        if sp_mask != None:  # When sparse mask is given
+            return self.down_proj(
+                self.sparse_act_fn(self.gate_proj(x) * sp_mask) * self.up_proj(x)
+            )  # Todo: This doesn't accelerate runtime (instead slowing down)
+
+        elif self.use_relu:
+            post_act = self.relu(self.gate_proj(x))
+            self.count += 1
+            if self.count <= 1:
+                print("USING RELU!!!!")
+
+            if self.is_stats:
+                dead_neurons = post_act == 0
+                dead_percentage = dead_neurons.float().mean()
+                agg_sparsity = dead_neurons.all(dim=0).float().mean()
+
+                self.dead_percentage = (self.dead_percentage * self.visit_counts + dead_percentage) / (self.visit_counts + 1)
+                self.agg_sparsity = (self.agg_sparsity * self.visit_counts + agg_sparsity) / (self.visit_counts + 1)
+                self.visit_counts += 1
+
+            return self.down_proj(post_act * self.up_proj(x))
+
+        else:
+            self.count += 1
+            if self.count <= 1:
+                ds_print("USING SparseSILU!!!!")
+            pre_act = self.gate_proj(x)
+            post_act = self.act_fn(pre_act)
+            if self.kill_sparse_swish_outputs:
+                dead_neurons = post_act.abs() <= self.dead_threshold
+                # print("pre act sparsity: ", (pre_act==0).float().mean())
+
+                dead_percentage = dead_neurons.float().mean()
+                agg_sparsity = dead_neurons.all(dim=0).float().mean()
+
+                if self.is_stats:
+                    self.dead_percentage = (self.dead_percentage * self.visit_counts + dead_percentage) / (self.visit_counts + 1)
+                    self.agg_sparsity = (self.agg_sparsity * self.visit_counts + agg_sparsity) / (self.visit_counts + 1)
+                    self.visit_counts += 1
+
+                    self.a = dead_percentage
+
+                    # Collect histogram stats
+                    if self.is_collect_histogram and pre_act.eq(0).float().mean() < 0.99:  # Padded dataset
+                        self.collect_stats(pre_act, post_act)
+
+                if self.count <= 1:
+                    ds_print("KILL!")
+                post_act[dead_neurons] = 0
+
+            out = self.down_proj(post_act * self.up_proj(x))
+            if self.use_sparse_regularization:
+                if self.regularization_type == "L1 regularization":
+                    self.activation_norm = torch.abs(post_act)[torch.abs(post_act) < self.regularization_threshold].mean()
+                elif self.regularization_type == "L2 regularization":
+                    self.activation_norm = torch.sqrt(torch.square(post_act)[torch.abs(post_act) < self.regularization_threshold]).mean()
+
+            return out
+
+
+class LlamaSparseDecoderLayer(LlamaDecoderLayer):
+    def __init__(
+        self,
+        config: LlamaConfig,
+        layer_idx: int,
+        decoder_layer: LlamaDecoderLayer,
+        init_svd: bool = True,
+        *args,
+        **kwargs,
+    ):
+        assert isinstance(decoder_layer.mlp, LlamaSparseSiluMLP), f"{type(decoder_layer.mlp)} should be LlamaSparseSiluMLP."
+
+        super().__init__(config, layer_idx)
+        self.hidden_size = config.hidden_size
+        self.intermediate_size = config.intermediate_size
+
+        self.init_svd = init_svd
+        self.self_attn = decoder_layer.self_attn
+
+        self.mlp = decoder_layer.mlp
+        self.input_layernorm = decoder_layer.input_layernorm
+        self.post_attention_layernorm = decoder_layer.post_attention_layernorm
+
+        # Sparse predictor for mlp (initialized with SVD decomposed matrix)
+        self.low_rank = kwargs.pop("low_rank", 64)
+        self.sparse_act_func = decoder_layer.mlp.sparse_act_fn
+
+        print(f"Setting {layer_idx}th mlp layer's sparse predictor... svd init: {init_svd}")
+        self.sp_mlp = low_rank_approximation(
+            decoder_layer.mlp.gate_proj,
+            act_func=self.sparse_act_func,
+            init_svd=init_svd,
+        )
+        self.use_async = kwargs.pop("use_async", False)
+        self.use_sparse_predictor = False
+        self.distill_loss = None
+
+    def forward(
+        self,
+        hidden_states: torch.Tensor,
+        attention_mask: Optional[torch.Tensor] = None,
+        position_ids: Optional[torch.LongTensor] = None,
+        past_key_value: Optional[Tuple[torch.Tensor]] = None,
+        output_attentions: Optional[bool] = False,
+        use_cache: Optional[bool] = False,
+        **kwargs,
+    ) -> Tuple[torch.FloatTensor, Optional[Tuple[torch.FloatTensor, torch.FloatTensor]]]:
+        print("hidden_states shape: ", hidden_states.shape)
+        if "padding_mask" in kwargs:
+            warnings.warn(
+                "Passing `padding_mask` is deprecated and will be removed in v4.37. Please make sure use `attention_mask` instead.`"
+            )
+
+        residual = hidden_states
+        sp_mask = None
+
+        if self.use_async:
+            sp_mask = self.sp_mlp(hidden_states)
+
+        hidden_states = self.input_layernorm(hidden_states)
+
+        # Self Attention
+        hidden_states, self_attn_weights, present_key_value = self.self_attn(
+            hidden_states=hidden_states,
+            attention_mask=attention_mask,
+            position_ids=position_ids,
+            past_key_value=past_key_value,
+            output_attentions=output_attentions,
+            use_cache=use_cache,
+            **kwargs,
+        )
+        hidden_states = residual + hidden_states
+
+        # Fully Connected
+        residual = hidden_states
+        hidden_states = self.post_attention_layernorm(hidden_states)
+
+        if not self.use_async:
+            sp_mask = self.sp_mlp(hidden_states)
+
+        # Compute distillation loss
+        gating_output = self.mlp.sparse_act_fn(self.mlp.gate_proj(hidden_states))
+        loss_func = MSELoss()
+        self.distill_loss = loss_func(sp_mask, gating_output)
+
+        # Convert sp mask into binary form
+        sp_mask = sp_mask > 0
+
+        if self.training:
+            sp_mask = None
+        # if not self.use_sparse_predictor:
+        #     sp_mask = None
+
+        hidden_states = self.mlp(hidden_states, sp_mask)
+        hidden_states = residual + hidden_states
+
+        outputs = (hidden_states,)
+
+        if output_attentions:
+            outputs += (self_attn_weights,)
+
+        if use_cache:
+            outputs += (present_key_value,)
+
+        return outputs
+
+
+# Callbacks
+
+
+class GracefulRegularizationScheduler(TrainerCallback):
+    def __init__(
+        self,
+        num_warmup_steps=40,
+        is_enabled: bool = False,
+        model_name: str = "mistral",
+        test_dataset: Dataset = None,
+        targeted_sparsity: float = 0.5,
+        keep_regularization_with_kill: bool = False,
+    ):
+        """Scheduler for regularizing the model first before applying the dead threshold.
+
+        :param num_warmup_steps: number of training steps required to reach the dead threshold, defaults to 40
+        :param increment_ratio: by how much to increase the dead threshold.
+            For example, 0.5 means "increase the threshold by 0.5 * desired threshold
+        """
+        self.num_warmup_steps = num_warmup_steps
+        self.is_enabled = is_enabled
+        self.model_name = model_name
+        self.test_dataset = test_dataset
+        self.targeted_sparsity = targeted_sparsity
+        self.keep_regularization_with_kill = keep_regularization_with_kill
+        self.act_hist_path = f"/scr/lukeai/histograms/warm_up_reg_{targeted_sparsity}/act_hist.pt"
+        if self.is_enabled:
+            print("GracefulRegularizationScheduler is enabled.")
+        self.trainer = None
+
+    def set_trainer(self, trainer):
+        self.trainer = trainer
+
+    def on_step_end(self, args, state, control, **kwargs):
+        if not self.is_enabled:
+            return
+
+        model = kwargs["model"]
+        if isinstance(model, PeftModel):
+            base_model = model.get_base_model()
+        else:
+            base_model = model
+
+        if state.global_step == 1:
+            ds_print("Setting an initial reg threshold to 0.1")
+            set_regularization_threshold(base_model, 0.1)
+            disable_sparse_silu(base_model)
+
+        if state.global_step == self.num_warmup_steps:
+            activate_stats(base_model)
+            enable_sparse_silu(base_model)
+            self.trainer.evaluate()
+            save_act_hist(base_model, self.act_hist_path)
+            set_sparse_threshold(base_model, self.targeted_sparsity, False)
+            deactivate_stats(base_model)
+            self.trainer.use_sparse_regularization = self.keep_regularization_with_kill
+            print_dead_neuron_stats(model.get_base_model())
+
+
+class GradualSparsificationScheduler(TrainerCallback):
+    def __init__(
+        self,
+        num_warmup_steps=40,
+        increment_ratio=0.5,
+        is_enabled: bool = False,
+        model_name: str = "mistral",
+    ):
+        """Scheduler for gradually increasing a dead threshold until it reaches the desired threshold.
+
+        :param num_warmup_steps: number of training steps required to reach the dead threshold, defaults to 40
+        :param increment_ratio: by how much to increase the dead threshold.
+            For example, 0.5 means "increase the threshold by 0.5 * desired threshold
+        """
+        self.num_warmup_steps = num_warmup_steps
+        self.increment_ratio = increment_ratio
+        self.step_size = int(num_warmup_steps * increment_ratio)
+        self.is_enabled = is_enabled
+        self.model_name = model_name
+        self.model_type = get_model_type(model_name)
+        self.mlp_type = MistralSparseSiluMLP if self.model_type == MISTRAL else LlamaSparseSiluMLP
+
+    def on_step_end(self, args, state, control, **kwargs):
+        model = kwargs["model"]
+
+        if not self.is_enabled:
+            if state.global_step <= 10:
+                for module in model.modules():
+                    if isinstance(module, self.mlp_type):
+                        module.current_dead_threshold = module.dead_threshold
+            return
+
+        current_dead_threshold = 0
+        desired_dead_threshold = 0
+
+        if is_mainprocess():
+            ds_print(state.global_step)
+
+        if state.global_step % self.step_size == 2:
+            for module in model.modules():
+                if isinstance(module, self.mlp_type):
+                    desired_dead_threshold = copy.deepcopy(module.dead_threshold)
+                    current_dead_threshold = module.current_dead_threshold
+                    current_dead_threshold += self.increment_ratio * desired_dead_threshold
+                    module.current_dead_threshold = min(desired_dead_threshold, current_dead_threshold)
+
+            if is_running_deepspeed and is_mainprocess():
+                ds_print(
+                    state.global_step,
+                    current_dead_threshold,
+                    desired_dead_threshold,
+                )
+
+        if state.global_step % 2000 == 0:
+            if is_running_deepspeed and is_mainprocess():
+                ds_print(
+                    f"Saving to /matx/u/lukeai/{self.model_name}_{state.global_step - 2}.pt",
+                )
+                torch.save(
+                    model.state_dict(),
+                    f"/matx/u/lukeai/{self.model_name}_{state.global_step - 2}.pt",
+                )
+
+
+# Trainer
+
+
+class SparseTrainer(Trainer):
+    def __init__(self, *args, **kwargs):
+        self.regularization_coefficient = kwargs.pop("regularization_coefficient", 10)
+        self.use_sparse_regularization = kwargs.pop("use_sparse_regularization", False)
+        self.use_spm_loss = False
+        self.freeze_original_weights = False
+        self.regularization_type = kwargs.pop("regularization_type", "L1 positive activation")
+        assert self.regularization_type in [
+            "L2 activation",
+            "L1 positive activation",
+        ], f"Invalid regularization type: {self.regularization_type}"
+        self.sparse_layers = []
+        self.sparse_decoder_layers = []
+        super(SparseTrainer, self).__init__(*args, **kwargs)
+
+    def initialize_sparse_silu_layers(self, model):
+        SparseMLP = get_mlp_class(model)
+        self.sparse_layers = [m for m in model.modules() if isinstance(m, SparseMLP)]
+
+    def initialize_sparse_decoder_layers(self, model):
+        SparseDecoder = get_decoder_class(model)
+        self.sparse_decoder_layers = [m for m in model.modules() if isinstance(m, SparseDecoder)]
+
+    def training_step(self, model: nn.Module, inputs: Dict[str, Union[torch.Tensor, Any]]) -> torch.Tensor:
+        """
+        Override the huggingface's training_step function to add a regularization term.
+        A regularization term is computed with intermediate values, which are freed after "backward()."
+        You need to set `retain_graph=True` inside `backward` function to keep the values.
+        """
+        model.train()
+        inputs = self._prepare_inputs(inputs)
+
+        with self.compute_loss_context_manager():
+            loss = self.compute_loss(model, inputs)
+
+        if self.args.n_gpu > 1:
+            loss = loss.mean()  # mean() to average on multi-gpu parallel training
+
+        if not self.freeze_original_weights:
+            if loss is not None:
+                self.accelerator.backward(loss, retain_graph=True)
+
+        if self.use_sparse_regularization:
+            regularization_loss = self.compute_regularization(model)
+            if self.args.n_gpu > 1:
+                regularization_loss = regularization_loss.mean()
+            if regularization_loss is not None:
+                self.accelerator.backward(regularization_loss, retain_graph=True)
+            loss += regularization_loss
+
+        if self.use_spm_loss:
+            spm_loss = self.compute_spm_loss(model)
+            if self.args.n_gpu > 1:
+                spm_loss = spm_loss.mean()
+            if spm_loss is not None:
+                self.accelerator.backward(spm_loss, retain_graph=False)
+            loss += spm_loss
+
+        return loss.detach() / self.args.gradient_accumulation_steps
+
+    def compute_regularization(self, model):
+        """
+        Compute a sparse regularization loss for SiLU
+        """
+        loss = 0
+        if len(self.sparse_layers) == 0:
+            self.initialize_sparse_silu_layers(model)
+        num_layers = len(self.sparse_layers)
+
+        for module in self.sparse_layers:
+            if module.activation_norm is not None:
+                loss += module.activation_norm
+
+        loss /= num_layers
+        loss *= self.regularization_coefficient
+
+        if self.state.global_step % 20 == 0 and loss != 0:
+            print("Negative relularizer loss: ", loss.item())
+        return loss
+
+    def compute_spm_loss(self, model):
+        loss = 0
+        if len(self.sparse_decoder_layers) == 0:
+            self.initialize_sparse_decoder_layers(model)
+        for module in self.sparse_decoder_layers:
+            if module.distill_loss != None:
+                loss += module.distill_loss
+        if self.state.global_step % 20 == 0 and loss != 0:
+            print("Sparse Predictor Distillation loss: ", loss.item())
+        return loss