big search for good learning rate

config.toml

@@ -1,7 +1,47 @@
 batch_size = 64
-learning_rate = 3e-4
-steps = 300
-print_every = 30
-seed = 5678
+steps = 500000
+print_every = 10000
+seed = 0
 cnn_storage = "./res/cnn.eqx"
-sae_storage = "./res/sae.eqx"
+
+[[sae]]
+layer = 6
+hidden_size = 1000
+input_size = 64
+learning_rate = 0.1
+
+[[sae]]
+layer = 6
+hidden_size = 1000
+input_size = 64
+learning_rate = 3e-2
+
+[[sae]]
+layer = 6
+hidden_size = 1000
+input_size = 64
+learning_rate = 1e-2
+
+[[sae]]
+layer = 6
+hidden_size = 1000
+input_size = 64
+learning_rate = 3e-3
+
+[[sae]]
+layer = 6
+hidden_size = 1000
+input_size = 64
+learning_rate = 1e-3
+
+[[sae]]
+layer = 6
+hidden_size = 1000
+input_size = 64
+learning_rate = 3e-4
+
+[[sae]]
+layer = 6
+hidden_size = 1000
+input_size = 64
+learning_rate = 1e-4

requirements.txt

@@ -1,25 +1,21 @@
-argtoml
+argtoml[save]
 build
 debugpy
 equinox
-jax>=0.4.14
+jax
 jaxtyping
+jo3mnist
+jo3util
 matplotlib
-nbclassic
-notebook
 optax
 pandas
 pyright
 scikit-learn
-tensorboard
-tensorboardX
+tensorflow
 torch
 torchvision
 tqdm
 twine
 typeguard
-git+file:///mnt/nas/git/jo3util
-git+https://github.com/JJJHolscher/jupytools
 -f https://storage.googleapis.com/jax-releases/jax_cuda_releases.html
--f https://download.pytorch.org/whl/cu118
-git+file:///mnt/nas/git/mnist
+--extra-index-url https://download.pytorch.org/whl/cpu

src/__main__.py

@@ -1,30 +1,30 @@
 #! /usr/bin/env python3
 # vim:fenc=utf-8
 
-"""
-
-"""
+from pathlib import Path
 
 import argtoml
 import equinox as eqx
 import jax
 import jax.numpy as jnp
-from jaxtyping import Float  # https://github.com/google/jaxtyping
-from jaxtyping import Array, Int, PyTree
-from torch.utils.data import DataLoader
+import jo3mnist
+from jo3util import eqx as jo3eqx
+from jo3util.root import run_dir
+from tqdm import tqdm
 
 from .cnn import CNN, train_cnn
-from .sae import SAE, train_sae
+from .sae import SAE, sample_features, train_sae
 
 # Hyperparameters
 O = argtoml.parse_args()
+
 key = jax.random.PRNGKey(O.seed)
 key, subkey = jax.random.split(key)
 
-if O.cnn_storage.exists():
-    model = eqx.tree_deserialise_leaves(O.cnn_storage, CNN(subkey))
+if (Path(".") / O.cnn_storage).exists():
+    cnn = eqx.tree_deserialise_leaves(O.cnn_storage, CNN(subkey))
 else:
-    model = train_cnn(
+    cnn = train_cnn(
         subkey,
         O.batch_size,
         O.learning_rate,
@@ -32,15 +32,59 @@ else:
         O.print_every,
         O.cnn_storage,
     )
+    eqx.tree_serialise_leaves(O.cnn_storage, cnn)
 
-sae = train_sae(
-    key,
-    model,
-    lambda m: m.layers[6],
-    64,
-    O.batch_size,
-    O.learning_rate,
-    O.steps,
-    O.print_every,
-    O.sae_storage,
-)
+for sae_hyperparams in O.sae:
+    sae_dir = run_dir(sae_hyperparams)
+    if sae_dir.exists():
+        continue
+
+    sae = train_sae(
+        key,
+        cnn,
+        lambda m: m.layers[sae_hyperparams.layer],
+        sae_hyperparams.input_size,
+        sae_hyperparams.hidden_size,
+        O.batch_size,
+        sae_hyperparams.learning_rate,
+        O.steps,
+        O.print_every,
+    )
+
+    sae_dir.mkdir()
+    argtoml.save(sae_hyperparams, sae_dir / "sae-hyperparams.toml")
+    argtoml.save(O, sae_dir / "config.toml")
+    jo3eqx.save(
+        sae_dir / f"sae.eqx",
+        sae,
+        {
+            "in_size": sae_hyperparams.input_size,
+            "hidden_size": sae_hyperparams.hidden_size,
+        },
+    )
+
+for sae_hyperparams in O.sae:
+    sae_dir = run_dir(sae_hyperparams)
+    sae = jo3eqx.load(sae_dir / f"sae.eqx", SAE)
+    sown_cnn = jo3eqx.sow(lambda m: m.layers[sae_hyperparams.layer], cnn)
+    trainloader, testloader = jo3mnist.load(
+        batch_size=O.batch_size, shuffle=False
+    )
+
+    train_dir = sae_dir / f"train"
+    if not train_dir.exists():
+        print("saving features from the training set")
+        train_dir.mkdir()
+        for i, features in tqdm(
+            sample_features(sown_cnn, sae, trainloader), total=len(trainloader)
+        ):
+            jnp.save(train_dir / f"{i}.npy", features, allow_pickle=False)
+
+    test_dir = sae_dir / f"test"
+    if not test_dir.exists():
+        print("saving features from the test set")
+        test_dir.mkdir()
+        for i, features in tqdm(
+            sample_features(sown_cnn, sae, testloader), total=len(testloader)
+        ):
+            jnp.save(test_dir / f"{i}.npy", features, allow_pickle=False)

src/cnn.py

@@ -152,5 +152,4 @@ def train_cnn(
     model = train_loop(
         model, trainloader, testloader, optim, steps, print_every
     )
-    eqx.tree_serialise_leaves(model_storage, model)
     return model

src/sae.py

@@ -58,6 +58,13 @@ class SAE(eqx.Module):
         return out
 
 
+def sample_features(cnn, sae, loader):
+    for i, (x, _) in enumerate(loader):
+        x = x.numpy()
+        activ = jax.vmap(cnn)(x)[0]
+        yield i, sae.encode(activ)
+
+
 def evaluate(model: eqx.Module, testloader: DataLoader):
     """This function evaluates the model on the test dataset,
     computing both the average loss and the average accuracy.
@@ -68,11 +75,27 @@ def evaluate(model: eqx.Module, testloader: DataLoader):
         y = y.numpy()
         # Note that all the JAX operations happen inside `loss` and `compute_accuracy`,
         # and both have JIT wrappers, so this is fast.
-        pred_y = jnp.argmax(jax.vmap(model)(x)[0], axis=1)
+        pred_y = jnp.argmax(jax.vmap(model)(x)[-1], axis=1)
         avg_acc += jnp.mean(y == pred_y)
     return avg_acc / len(testloader)
 
 
+@eqx.filter_jit
+def make_step(
+    sae: SAE,
+    model: eqx.Module,
+    optim,
+    opt_state: PyTree,
+    x: Float[Array, "batch 1 28 28"],
+    y: Int[Array, " batch"],
+):
+    activ = jax.vmap(model)(x)[0]
+    loss_value, grads = SAE.loss(sae, activ[0], 1)
+    updates, opt_state = optim.update(grads, opt_state, sae)
+    sae = eqx.apply_updates(sae, updates)
+    return sae, opt_state, loss_value
+
+
 def train_loop(
     sae: SAE,
     model: eqx.Module,
@@ -89,22 +112,6 @@ def train_loop(
 
     print(f"test_accuracy={evaluate(model, testloader).item()}")
 
-    # Always wrap everything -- computing gradients, running the optimiser, updating
-    # the model -- into a single JIT region. This ensures things run as fast as
-    # possible.
-    @eqx.filter_jit
-    def make_step(
-        sae: SAE,
-        model: eqx.Module,
-        opt_state: PyTree,
-        x: Float[Array, "batch 1 28 28"],
-        y: Int[Array, " batch"],
-    ):
-        _, activ = jax.vmap(model)(x)
-        loss_value, grads = SAE.loss(sae, activ[0], 1)
-        updates, opt_state = optim.update(grads, opt_state, sae)
-        sae = eqx.apply_updates(sae, updates)
-        return sae, opt_state, loss_value
     
     # Loop over our training dataset as many times as we need.
     def infinite_trainloader():
@@ -116,7 +123,7 @@ def train_loop(
         # so convert them to NumPy arrays.
         x = x.numpy()
         y = y.numpy()
-        sae, opt_state, train_loss = make_step(sae, model, opt_state, x, y)
+        sae, opt_state, train_loss = make_step(sae, model, optim, opt_state, x, y)
         if (step % print_every) == 0 or (step == steps - 1):
             model_with_sae = insert_after(sae_pos, model, sae)
             test_accuracy = evaluate(model_with_sae, testloader)
@@ -132,16 +139,16 @@ def train_sae(
     cnn,
     sae_pos,
     activ_size,
+    hidden_size,
     batch_size,
     learning_rate,
     steps,
     print_every,
-    sae_storage="./res/sae_layer_6.eqx",
 ):
     trainloader, testloader = jo3mnist.load(batch_size=batch_size)
-    sae = SAE(activ_size, 1000, key)
+    sae = SAE(activ_size, hidden_size, key)
     optim = optax.adamw(learning_rate)
-    sae = train_loop(
+    return train_loop(
         sae,
         cnn,
         sae_pos,
@@ -151,5 +158,3 @@ def train_sae(
         steps,
         print_every,
     )
-    eqx.tree_serialise_leaves(sae_storage, sae)
-    return sae