feat: add lammps interface based on jax_and_zbl

.gitignore

@@ -0,0 +1,24 @@
+# --- .gitignore 内容开始 ---
+
+# 1. 忽略 LAMMPS 日志和轨迹文件
+log.lammps
+*.log
+*.lammpstrj
+
+# 2. 忽略数据结构文件
+*.data
+POSCAR
+CH4.txt
+*pt
+*.pt
+*.pkl
+# 3. 忽略大模型权重文件 (通常不建议传大文件到 git，除非你需要)
+
+# 4. 忽略 Python 编译缓存和打包文件
+__pycache__/
+*.egg-info/
+build/
+dist/
+*.zip
+lammps/
+# --- .gitignore 内容结束 ---

README.md

@@ -6,17 +6,14 @@
 
 We present **AlphaNet**, a local frame-based equivariant model designed to tackle the challenges of achieving both accurate and efficient simulations for atomistic systems.  **AlphaNet** enhances computational efficiency and accuracy by leveraging the local geometric structures of atomic environments through the construction of equivariant local frames and learnable frame transitions. And inspired by Quantum Mechanics, AlphaNet **introduces efficient multi-body message passing by using contraction of matrix product states** rather than common 2-body message passing.  Notably, AlphaNet offers one of the best trade-offs between computational efficiency and accuracy among existing models. Moreover, AlphaNet exhibits scalability across a broad spectrum of system and dataset sizes, affirming its versatility.
 markdown
-## Update Log (v0.1.2)
+## Update Log (v0.1.2-beta)
 
 ### Major Changes
 
-1. **Added new 2 pretrained models**
-   - Provide a pretrained model for materials: **AlphaNet-MATPES-r2scan** and our first pretrained model for catlysis: **AlphaNet-AQCAT25**, see them in the [pretrained](./pretrained) folder.
-   - Users can **convert the checkpoint trained in torch to our JAX model**
-
-2. **Fixed some bugs**
-   - Support non-periodic boundary conditions in our ase calculator.
-   - Fixed errors in float64
+1. **Add lammps mliap interface**
+2. **Slight change of model arch**
+3. **Add finetune option**
+
 
 
 ## Installation Guide
@@ -84,7 +81,11 @@ alpha-train example.json # use --help to see more functions, like multi-gpu trai
 ```bash 
 alpha-conv -i in.ckpt -o out.ckpt # use --help to see more functions
 ```
-3. Evaluate a model and draw diagonal plot:
+2. Finetune a converted ckpt:
+```bash 
+alpha-train example.json --finetune /path/to/your.ckpt
+```
+4. Evaluate a model and draw diagonal plot:
 ```bash 
 alpha-eval -c example.json -m /path/to/ckpt # use --help to see more functions
 ```
@@ -142,67 +143,17 @@ print(atoms.get_potential_energy())
 
 ```
 
-### Using AlphaNet in JAX
-1. Installation
-   ```bash
-   pip install -U --pre jax jaxlib "jax-cuda12-plugin[with-cuda]" jax-cuda12-pjrt -i https://us-python.pkg.dev/ml-oss-artifacts-published/jax/simple/
-   ```
-   This is just for reference. JAX installation may be tricky, please get more information in [JAX](https://docs.jax.dev/en/latest/installation.html) and its github issues.
-
-   Currently I suggest **version>=0.4 <=0.4.10 or >=0.4.30 <=0.5 or ==0.6.2**  
-
-   Install flax and haiku
-   ```bash
-   pip install matscipy
-   pip install flax
-   pip install -U dm-haiku
-   ```
-
-2. Converted checkpoints:
-
-   See pretrained directory
-
-3. Convert a self-trained ckpt
-
-   First from torch to flax:
-   ```bash
-   python scripts/conv_pt2flax.py #need to modify the path in it.
-   ```
-   Then from flax to haiku:
-
-   ```bash
-   python scripts/flax2haiku.py #need to modify the path in it.
-   ```
-
-4. Performance:
-
-   The output (energy forces stress) difference from torch model would below 0.001. I ran speed tests on a 4090 GPU, system size from 4 to 300, and get a **2.5x to 3x** speed up.
-
-   Please note jax model need to be compiled first, so the first run could take a few seconds or minutes, but would be pretty fast after that.
-
-## Dataset Download
-
-[The Defected Bilayer Graphene Dataset](https://zenodo.org/records/10374206)
-
-[The Formate Decomposition on Cu Dataset](https://archive.materialscloud.org/record/2022.45)
-
-[The Zeolite Dataset](https://doi.org/10.6084/m9.figshare.27800211)
-
-[The OC dataset](https://opencatalystproject.org/)
-
-[The MPtrj dataset](https://matbench-discovery.materialsproject.org/data)
-
 ## Pretrained Models
 
-Current pretrained models:
+Current pretrained models (due to the arch changes, previous pretrained models would need update, which will be done asap):
 
 For materials:
-- [AlphaNet-MPtrj-v1](pretrained/MPtrj): A model trained on the MpTrj dataset.
-- [AlphaNet-oma-v1](pretrained/OMA): A model trained on the OMAT24 dataset, and finetuned on sALEX+MPtrj.
-- [AlphaNet-MATPES-r2scan](pretrained/MATPES): A model trained on the MATPES-r2scan dataset.
 
-For surfaces adsorbtion and reactions:
-- [AlphaNet-AQCAT25](pretrained/AQCAT25): A model trained on the AQCAT25 dataset.
+- [AlphaNet-oma-v1.5](pretrained/OMA): A model trained on the OMAT24 dataset, and finetuned on sALEX+MPtrj.
+
+## Use AlphaNet in LAMMPS
+
+See [mliap_lammps](mliap_lammps.md)
 
 ## License
 
@@ -222,3 +173,6 @@ We thank all contributors and the community for their support. Please open an is
 
 
 
+
+
+

alphanet/cli.py

@@ -57,7 +57,8 @@ def display_config_table(main_config, runtime_config):
 @click.option("--num_devices", type=int, default=1, help="GPUs per node")
 @click.option("--resume", is_flag=True, help="Resume training from checkpoint")
 @click.option("--ckpt_path", type=click.Path(), default=None, help="Path to checkpoint file")
-def main(config, num_nodes, num_devices, resume, ckpt_path):
+@click.option("--finetune", type=click.Path(exists=True), default=None, help="Path to pretrained checkpoint for finetuning (resets optimizer)")
+def main(config, num_nodes, num_devices, resume, ckpt_path, finetune):
 
     with open(config, "r") as f:
         mconfig = json.load(f)
@@ -67,7 +68,8 @@ def main(config, num_nodes, num_devices, resume, ckpt_path):
         "num_nodes": num_nodes,
         "num_devices": num_devices,
         "resume": resume,
-        "ckpt_path": ckpt_path
+        "ckpt_path": ckpt_path,
+        "finetune_path": finetune
     }
 
     display_header()

alphanet/config.py

@@ -2,7 +2,7 @@
 
 import subprocess
 import json
-import torch
+#import torch
 from typing import Literal, Dict, Optional
 from pydantic_settings import BaseSettings
 
@@ -22,6 +22,7 @@ class TrainConfig(BaseSettings):
     batch_size: int = 32
     vt_batch_size: int = 32
     lr: float = 0.0005
+    optimizer: str = "radam"
     lr_decay_factor: float = 0.5
     lr_decay_step_size: int = 150
     weight_decay: float = 0
@@ -86,7 +87,13 @@ class AlphaConfig(BaseSettings):
     has_norm_after_flag: bool = False
     reduce_mode: str = "sum"
     zbl: bool = False
-    device: torch.device = torch.device('cuda') if torch.cuda.is_available() else torch.device("cpu")
+    zbl_w: Optional[list] = [0.187,0.3769,0.189,0.081,0.003,0.037,0.0546,0.0715]
+    zbl_b: Optional[list] = [3.20,1.10,0.102,0.958,1.28,1.14,1.69,5]
+    zbl_gamma: float = 1.001
+    zbl_alpha: float = 0.6032
+    zbl_E2: float = 14.399645478425
+    zbl_A0: float = 0.529177210903
+    device: str = "cuda"
 
 
 

alphanet/create_lammps_model.py

@@ -0,0 +1,91 @@
+import argparse
+import os
+import torch
+from pathlib import Path
+
+# Import the AlphaNet model wrapper and config
+from alphanet.models.model import AlphaNetWrapper
+from alphanet.config import All_Config
+
+# Import the Python-level LAMMPS interface class
+try:
+    from alphanet.infer.lammps_mliap_alphanet import LAMMPS_MLIAP_ALPHANET
+except ImportError:
+    print("Could not import LAMMPS_MLIAP_ALPHANET.")
+    print("Please ensure 'alphanet/infer/lammps_mliap_alphanet.py' exists.")
+    exit(1)
+
+
+def parse_args():
+    parser = argparse.ArgumentParser(
+        description="Convert an AlphaNet model to LAMMPS ML-IAP format (Python Pickle)",
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+    )
+    parser.add_argument(
+        "--config", "-c", required=True, type=str,
+        help="Path to the model configuration JSON file",
+    )
+    parser.add_argument(
+        "--checkpoint", "-m", required=True, type=str,
+        help="Path to the trained model checkpoint (.ckpt)",
+    )
+    parser.add_argument(
+        "--output", "-o", required=True, type=str,
+        help="Output path to save the model (e.g., alphanet_lammps.pt)",
+    )
+    parser.add_argument(
+        "--device", type=str, default="cpu",
+        help="Device to load the model on ('cpu' or 'cuda')",
+    )
+    parser.add_argument(
+        "--dtype", type=str, default="float64",
+        choices=["float32", "float64"],
+        help="Data type for the model",
+    )
+    return parser.parse_args()
+
+def main():
+    args = parse_args()
+
+    device = torch.device(args.device)
+
+    print(f"1. Loading configuration from {args.config}...")
+    config_obj = All_Config().from_json(args.config)
+
+    config_obj.model.dtype = "64" if args.dtype == "float64" else "32"
+
+    print(f"2. Initializing AlphaNetWrapper (precision: {args.dtype}, device: {args.device})...")
+    model_wrapper = AlphaNetWrapper(config_obj.model) 
+
+    print(f"3. Loading weights from {args.checkpoint}...")
+    ckpt = torch.load(args.checkpoint, map_location=device)
+
+    if 'state_dict' in ckpt:
+        state_dict = {k.replace('model.', ''): v for k, v in ckpt['state_dict'].items()}
+        model_wrapper.model.load_state_dict(state_dict, strict=False)
+    else:
+        model_wrapper.load_state_dict(ckpt, strict=False)
+
+    if args.dtype == "float64":
+        model_wrapper.double()
+    else:
+        model_wrapper.float()
+
+    model_wrapper.to(device).eval()
+
+    print("4. Creating LAMMPS ML-IAP Interface Object...")
+    lammps_interface_object = LAMMPS_MLIAP_ALPHANET(model_wrapper)
+
+    if device.type == 'cuda':
+        lammps_interface_object.model.cuda()
+
+    print(f"5. Saving Python object to {args.output}...")
+    # Using standard torch.save for Python pickle compatibility
+    torch.save(lammps_interface_object, args.output)
+
+    print("\n--- Success ---")
+    print(f"Created LAMMPS model file: {args.output}")
+    print("Usage in LAMMPS: pair_style mliap model/python ...")
+
+if __name__ == "__main__":
+    main()

alphanet/infer/calc.py

@@ -29,6 +29,8 @@ def __init__(self, ckpt_path, config, device='cpu', precision='32', **kwargs):
         Calculator.__init__(self, **kwargs)
 
         # --- Model Loading ---
+        if precision == "64":
+           config.dtype = '64'
         if ckpt_path.endswith('ckpt'):
           self.model = AlphaNetWrapper(config).to(torch.device(device))
           # Load state dict, ignoring mismatches if any
@@ -42,7 +44,7 @@ def __init__(self, ckpt_path, config, device='cpu', precision='32', **kwargs):
         self.precision = torch.float32 if precision == "32" else torch.float64
 
         if precision == "64":
-         self.model.double()
+          self.model.double()
 
         self.model.eval() # Set model to evaluation mode
         self.model.to(self.device)