From 3b87b8bd271ade1622149516ae14f94b7ff20dd5 Mon Sep 17 00:00:00 2001
From: Tanner Robison <Robison.tnr@gmail.com>
Date: Wed, 17 Jun 2026 18:14:20 -0700
Subject: neurobench & memtorch

---
 neurobench_testing/examples/gsc/train_SNN.py | 107 +++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 neurobench_testing/examples/gsc/train_SNN.py

(limited to 'neurobench_testing/examples/gsc/train_SNN.py')

diff --git a/neurobench_testing/examples/gsc/train_SNN.py b/neurobench_testing/examples/gsc/train_SNN.py
new file mode 100644
index 0000000..4c98cbe
--- /dev/null
+++ b/neurobench_testing/examples/gsc/train_SNN.py
@@ -0,0 +1,107 @@
+import torch
+import numpy as np
+import snntorch.functional as func
+import snntorch.surrogate as surrogate
+import snntorch.utils as utils
+
+from tqdm import tqdm
+from torch.utils.data import DataLoader
+
+from neurobench.datasets import SpeechCommands
+from neurobench.preprocessing import S2SPreProcessor
+from neurobench.postprocessing import choose_max_count
+
+from SNN import net
+
+BATCH_SIZE = 5
+NUM_WORKERS = 8
+EPOCHS = 100
+
+# Check if GPU is available
+device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
+print(device)
+
+# Load the dataset
+data_dir = "../../../data/speech_commands/"
+train_set = SpeechCommands(path=data_dir, subset="training")
+val_set = SpeechCommands(path=data_dir, subset="validation")
+test_set = SpeechCommands(path=data_dir, subset="testing")
+
+s2s = S2SPreProcessor()
+
+# Create the dataloaders
+train_loader = DataLoader(train_set, batch_size=BATCH_SIZE, shuffle=True)
+val_loader = DataLoader(val_set, batch_size=BATCH_SIZE, shuffle=True)
+test_loader = DataLoader(test_set, batch_size=BATCH_SIZE, shuffle=True)
+
+# Different parameters to Speech2Spikes make different shapes of data
+tmp_dat = torch.stack([train_set[0][0], train_set[1][0]])
+tmp_label = torch.stack([train_set[0][1], train_set[1][1]])
+tmp_out = s2s((tmp_dat, tmp_label))
+num_steps = tmp_out[0].shape[1]
+num_feat = tmp_out[0].shape[2]
+
+# The SNNTorch forward pass
+def forward_pass(net, data, num_steps):
+    spk_rec = []
+    utils.reset(net)
+    for step in range(num_steps):
+        spk_out, _ = net(data[:, step, ...])
+        spk_rec.append(spk_out)
+    return torch.stack(spk_rec)
+
+# Send network to device
+net.to(device)
+optimizer = torch.optim.Adam(net.parameters(), lr=0.001, betas=(0.9, 0.999))
+loss_fn = func.mse_count_loss(correct_rate=0.25, incorrect_rate=0.025)
+
+# Training Start
+best_acc = 0
+for epoch in range(EPOCHS):
+    print(f"Epoch {epoch}:")
+    train_loss = []
+    train_acc = []
+    net.train()
+    for batch in tqdm(iter(train_loader)):
+        events, targets = s2s(batch)
+        events = events.to(device)
+        targets = targets.to(device)
+
+        spk_rec = forward_pass(net, events, num_steps)
+        loss_val = loss_fn(spk_rec, targets)
+
+        train_loss.append(loss_val.item())
+        train_acc.append(func.accuracy_rate(spk_rec, targets))
+
+        optimizer.zero_grad()
+        loss_val.backward()
+        optimizer.step()
+
+    print(f"Train Loss: {np.mean(train_loss):.3f}")
+    print(f"Train Accuracy: {np.mean(train_acc) * 100:.2f}%")
+
+    val_loss = []
+    val_acc = []
+    net.eval()
+    for batch in tqdm(iter(val_loader)):
+        events, targets = s2s(batch)
+        events = events.to(device)
+        targets = targets.to(device)
+
+        spk_rec = forward_pass(net, events, num_steps)
+
+        val_loss.append(loss_fn(spk_rec, targets).item())
+        val_acc.append(func.accuracy_rate(spk_rec, targets))
+
+    print(f"Validation Loss: {np.mean(val_loss):.3f}")
+    print(f"Validation Accuracy: {np.mean(val_acc) * 100:.2f}%")
+
+    if np.mean(val_acc) > best_acc:
+        print("New Best Validation Accuracy. Saving...")
+        best_acc = np.mean(val_acc)
+        torch.save(net.state_dict(), "model_data/s2s_gsc_snntorch")
+
+    print(f"---------------------\n")
+
+# Load the weights into the network for inference
+net.load_state_dict(torch.load("model_data/s2s_gsc_snntorch"))
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