# Fleet Spec: Controlled GNN Architecture Comparison # # Direct comparison of 5 GNN architectures (GCN, SAGE, GAT, GIN, GraphConv) # with controlled hyperparameters for Ruby code complexity prediction. # # Launch: # ratiocinator fleet run experiments/gnn_architecture_comparison.yaml # # Each arm varies ONLY the conv_type. All other hyperparameters are identical. name: gnn-architecture-comparison description: "5-way GNN architecture comparison on Ruby AST complexity prediction" hardware: gpu: "RTX 4090" num_gpus: 1 min_cpu_ram_gb: 32 min_inet_down: 1000.0 min_cuda_version: 12.0 max_dph: 0.40 disk_gb: 50.0 image: pytorch/pytorch:2.7.0-cuda12.8-cudnn9-runtime repo: url: https://github.com/timlawrenz/jubilant-palm-tree.git branch: experiment/ratiocinator-gnn-study clone_depth: 1 data: source: none deps: pre_install: - "apt-get update -qq && apt-get install -y -qq git-lfs > /dev/null 2>&1 || true" - "cd /workspace/experiment && git lfs install && git lfs pull" - "pip install torch-geometric torch-scatter torch-sparse -f https://data.pyg.org/whl/torch-2.7.0+cu128.html" - "pip install pandas tqdm sentence-transformers nltk scikit-learn numpy" requirements: requirements.txt exclude_from_requirements: - torch - torchvision - torch_geometric verify: "python -c \"import torch_geometric; print(f'PyG {torch_geometric.__version__}')\"" arms: # ── Architecture comparison (same hyperparams, different conv) ── - name: sage-baseline description: "GraphSAGE baseline (original architecture)" command: "bash scripts/run_complexity_arm.sh" env: CONV_TYPE: "SAGE" HIDDEN_DIM: "64" NUM_LAYERS: "3" DROPOUT: "0.1" LEARNING_RATE: "0.001" EPOCHS: "50" - name: gcn description: "Graph Convolutional Network" command: "bash scripts/run_complexity_arm.sh" env: CONV_TYPE: "GCN" HIDDEN_DIM: "64" NUM_LAYERS: "3" DROPOUT: "0.1" LEARNING_RATE: "0.001" EPOCHS: "50" - name: gat description: "Graph Attention Network" command: "bash scripts/run_complexity_arm.sh" env: CONV_TYPE: "GAT" HIDDEN_DIM: "64" NUM_LAYERS: "3" DROPOUT: "0.1" LEARNING_RATE: "0.001" EPOCHS: "50" - name: gin description: "Graph Isomorphism Network" command: "bash scripts/run_complexity_arm.sh" env: CONV_TYPE: "GIN" HIDDEN_DIM: "64" NUM_LAYERS: "3" DROPOUT: "0.1" LEARNING_RATE: "0.001" EPOCHS: "50" - name: graphconv description: "GraphConv (Morris et al.)" command: "bash scripts/run_complexity_arm.sh" env: CONV_TYPE: "GraphConv" HIDDEN_DIM: "64" NUM_LAYERS: "3" DROPOUT: "0.1" LEARNING_RATE: "0.001" EPOCHS: "50" # ── Hyperparameter variants on best-expected architectures ── - name: sage-wide description: "SAGE with 128 hidden dim" command: "bash scripts/run_complexity_arm.sh" env: CONV_TYPE: "SAGE" HIDDEN_DIM: "128" NUM_LAYERS: "3" DROPOUT: "0.1" LEARNING_RATE: "0.001" EPOCHS: "50" - name: gat-wide description: "GAT with 128 hidden dim" command: "bash scripts/run_complexity_arm.sh" env: CONV_TYPE: "GAT" HIDDEN_DIM: "128" NUM_LAYERS: "3" DROPOUT: "0.1" LEARNING_RATE: "0.001" EPOCHS: "50" - name: sage-deep description: "SAGE with 5 layers" command: "bash scripts/run_complexity_arm.sh" env: CONV_TYPE: "SAGE" HIDDEN_DIM: "64" NUM_LAYERS: "5" DROPOUT: "0.1" LEARNING_RATE: "0.001" EPOCHS: "50" metrics: protocol: json_line json_prefix: "METRICS:" budget: max_dollars: 10.00 train_timeout_s: 1200 download_timeout_s: 600