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Update GNN reference implementation: add DGL backend (#1903)
* Update GNN reference implementation: add DGL backend * [Automated Commit] Format Codebase * Update README.md
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
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| from typing import Optional, List, Union, Any | ||
| from dgl_utilities.feature_fetching import IGBHeteroGraphStructure, Features, IGBH | ||
| from dgl_utilities.components import build_graph, get_loader, RGAT | ||
| from dgl_utilities.pyg_sampler import PyGSampler | ||
| import os | ||
| import torch | ||
| import logging | ||
| import backend | ||
| from typing import Literal | ||
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| logging.basicConfig(level=logging.INFO) | ||
| log = logging.getLogger("backend-dgl") | ||
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| class BackendDGL(backend.Backend): | ||
| def __init__( | ||
| self, | ||
| model_type="rgat", | ||
| type: Literal["fp16", "fp32"] = "fp16", | ||
| device: Literal["cpu", "gpu"] = "gpu", | ||
| ckpt_path: str = None, | ||
| igbh: IGBH = None, | ||
| batch_size: int = 1, | ||
| layout: Literal["CSC", "CSR", "COO"] = "COO", | ||
| edge_dir: str = "in", | ||
| ): | ||
| super(BackendDGL, self).__init__() | ||
| # Set device and type | ||
| if device == "gpu": | ||
| self.device = torch.device("cuda") | ||
| else: | ||
| self.device = torch.device("cpu") | ||
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| if type == "fp32": | ||
| self.type = torch.float32 | ||
| else: | ||
| self.type = torch.float16 | ||
| # Create Node and neighbor loader | ||
| self.fan_out = [5, 10, 15] | ||
| self.igbh_graph_structure = igbh.igbh_dataset | ||
| self.feature_store = Features( | ||
| self.igbh_graph_structure.dir, | ||
| self.igbh_graph_structure.dataset_size, | ||
| self.igbh_graph_structure.in_memory, | ||
| use_fp16=self.igbh_graph_structure.use_fp16, | ||
| ) | ||
| self.feature_store.build_features(use_journal_conference=True) | ||
| self.graph = build_graph( | ||
| self.igbh_graph_structure, | ||
| "dgl", | ||
| features=self.feature_store) | ||
| self.neighbor_loader = PyGSampler([5, 10, 15]) | ||
| # Load model Architechture | ||
| self.model = RGAT( | ||
| backend="dgl", | ||
| device=device, | ||
| graph=self.graph, | ||
| in_feats=1024, | ||
| h_feats=512, | ||
| num_classes=2983, | ||
| num_layers=len(self.fan_out), | ||
| n_heads=4 | ||
| ).to(self.type).to(self.device) | ||
| self.model.eval() | ||
| # Load model checkpoint | ||
| ckpt = None | ||
| if ckpt_path is not None: | ||
| try: | ||
| ckpt = torch.load(ckpt_path, map_location=self.device) | ||
| except FileNotFoundError as e: | ||
| print(f"Checkpoint file not found: {e}") | ||
| return -1 | ||
| if ckpt is not None: | ||
| self.model.load_state_dict(ckpt["model_state_dict"]) | ||
|
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| def version(self): | ||
| return torch.__version__ | ||
|
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| def name(self): | ||
| return "pytorch-SUT" | ||
|
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| def image_format(self): | ||
| return "NCHW" | ||
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| def load(self): | ||
| return self | ||
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| def predict(self, inputs: torch.Tensor): | ||
| with torch.no_grad(): | ||
| input_size = inputs.shape[0] | ||
| # Get batch | ||
| batch = self.neighbor_loader.sample(self.graph, {"paper": inputs}) | ||
| batch_preds, batch_labels = self.model( | ||
| batch, self.device, self.feature_store) | ||
| return batch_preds |
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