test model

cell_delay/self_att.py

@@ -7,6 +7,8 @@ import pickle
 import math
 import pdb
 
+from torch.utils.data import Dataset, DataLoader
+
 class MLP(torch.nn.Module):
     def __init__(self, *sizes, batchnorm=False, dropout=False):
         super().__init__()
@@ -100,6 +102,25 @@ def load_cell_delay_data():
         f.close()
     return data
 
+class myDataset(Dataset):
+    def __init__(self, data, libcell, key):
+        self.delays = data['delays'][libcell][key]
+        self.topos = data['topos'][libcell][key]
+    
+    def __len__(self):
+        return len(self.topos)
+    
+    def __getitem__(self, idx):
+        return self.topos[idx][0][0], self.topos[idx][0][1], self.topos[idx][1][0], self.topos[idx][1][1], self.delays[idx]
+
+def collate_fn(data):
+    input_data = []
+    labels = []
+    for dd in data:
+        input_data.append((dd[0], dd[1], dd[2], dd[3]))
+        labels.append(dd[4])
+    return input_data, labels
+
 def preprocess(data):
     libcell = 'INVx1_ASAP7_75t_R'
     key = 'A-Y'
@@ -153,8 +174,38 @@ def preprocess(data):
             os.makedirs(save_dir, exist_ok=True)
             torch.save(model.state_dict(), save_path)
 
+
+def train(loader):
+    model = CellDelayPred(7, 4, 32)
+    model.cuda()
+    model = torch.nn.DataParallel(model)
+
+    optimizer = torch.optim.Adam(model.parameters(), lr=0.0005)
+
+    for batch_idx, (topo, delay) in enumerate(loader):
+        num_data = len(topo)
+        batch_loss = torch.zeros(num_data, device='cuda')
+        for di in range(num_data):
+            fanin_topo = torch.from_numpy(topo[di][0]).cuda().float().unsqueeze_(0)
+            fanin_id = topo[di][1]
+            fanout_topo = torch.from_numpy(topo[di][2]).cuda().float().unsqueeze_(0)
+            fanout_id = topo[di][3]
+            pred = model(fanin_topo, fanout_topo, fanin_id, fanout_id)
+            truth = torch.from_numpy(delay[di]).cuda().float().unsqueeze_(0)
+            batch_loss[di] = F.mse_loss(pred, truth)
             pdb.set_trace()
 
 if __name__ == '__main__':
     data = load_cell_delay_data()
+
+    # naive training
     preprocess(data)
+
+    """
+    # use DataLoader
+    libcell = 'INVx1_ASAP7_75t_R'
+    key = 'A-Y'
+    dataset = myDataset(data, libcell, key)
+    loader = DataLoader(dataset, batch_size=4, collate_fn=collate_fn)
+    train(loader)
+    """

cell_delay/test_model.py

+import torch
+import numpy as np
+import dgl
+import torch.nn.functional as F
+import random
+import pdb
+import time
+import argparse
+import os
+from sklearn.metrics import r2_score
+import matplotlib.pyplot as plt
+
+from self_att import *
+
+def load_model(model_path):
+    model = CellDelayPred(7, 4, 32)
+    model.load_state_dict(torch.load(model_path))
+    model.cuda()
+    return model
+
+def test(data, model):
+    libcell = 'INVx1_ASAP7_75t_R'
+    key = 'A-Y'
+    delays = np.stack(data['delays'][libcell][key])
+    delays_log = np.log(delays)
+    topos = data['topos'][libcell][key]
+    fanin_topos, fanin_ids, fanout_topos, fanout_ids = [], [], [], []
+    for topo in topos:
+        fanin_topos.append(torch.tensor(topo[0][0]).float())
+        fanin_ids.append(topo[0][1])
+        fanout_topos.append(torch.tensor(topo[1][0]).float())
+        fanout_ids.append(topo[1][1])
+
+    num_data = len(topos)
+    pred_delays_log = np.zeros((num_data, 4))
+    model.eval()
+    with torch.no_grad():
+        for di in range(num_data):
+            fanin = fanin_topos[di]
+            fanin = fanin.cuda()
+            fanin.unsqueeze_(0)
+
+            fanout = fanout_topos[di]
+            fanout = fanout.cuda()
+            fanout.unsqueeze_(0)
+            pred = model(fanin, fanout, fanin_ids[di], fanout_ids[di])
+            pred_delays_log[di] = pred.cpu().numpy()
+    
+    corner_names = {0: 'ER', 1: 'EF', 2: 'LR', 3: 'LF'}
+    pred_delays = np.exp(pred_delays_log)
+    for corner in range(4):
+        tt = delays[:, corner]
+        pp = pred_delays[:, corner]
+        minv = min(tt.min(), pp.min()) - 0.2
+        maxv = max(tt.max(), pp.max()) + 0.2
+        maxv = min(2000, maxv)
+        plt.axis("square")
+        plt.title(f'cell delay prediction ({corner_names[corner]}) of libcell {libcell}')
+        plt.xlabel('Truth/ns')
+        plt.ylabel('Predicted/ns')
+        plt.xlim(minv - 10, maxv + 10)
+        plt.ylim(minv - 10, maxv + 10)
+        plt.axline((minv, minv), (maxv, maxv), color='r')
+        # plt.axline((500, minv), (500, maxv), color='black', linestyle='-.')
+        plt.scatter(tt, pp, s=10, c='b')
+        save_dir = os.path.join('figures', libcell)
+        os.makedirs(save_dir, exist_ok=True)
+        plt.savefig(os.path.join(save_dir, f'{libcell}.{corner_names[corner]}.png'))
+        plt.clf()
+
+        # draw delay distribution
+        diff = pp - tt
+        # filter diff
+        diff = diff[np.abs(diff) <= 200]
+        print(f"{corner_names[corner]} remove {pp.size - diff.size} / {pp.size} large diff points")
+        plt.hist(diff, bins=100)
+        plt.xlabel('Diff')
+        plt.ylabel('Frequency')
+        plt.xlim(-200, 200)
+        plt.title(f'cell delay pred err distr ({corner_names[corner]}) of libcell {libcell}')
+        plt.savefig(os.path.join(save_dir, f'{libcell}.{corner_names[corner]}.dist.png'))
+        plt.clf()
+
+
+
+if __name__ == '__main__':
+    data = load_cell_delay_data()
+
+    model_path = './weights/e-109-loss-1622.447.pt'
+    model = load_model(model_path)
+
+    test(data, model)
+