Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

feat(jax): zbl #4301

Merged
merged 6 commits into from
Nov 4, 2024
Merged

feat(jax): zbl #4301

merged 6 commits into from
Nov 4, 2024

Conversation

njzjz
Copy link
Member

@njzjz njzjz commented Nov 1, 2024

Summary by CodeRabbit

Release Notes

  • New Features

    • Introduced new classes: DPZBLLinearEnergyAtomicModel and PairTabAtomicModel, enhancing atomic model functionalities.
    • Added get_zbl_model function for constructing DPZBLModel from input data.
    • Improved error handling in vector normalization with safe_for_vector_norm and safe_for_sqrt.
  • Bug Fixes

    • Enhanced distance calculations in format_nlist to prevent NaN errors.
  • Documentation

    • Updated comments and docstrings for clarity on recent changes.
  • Tests

    • Enhanced test support for JAX backend in test_zbl_ener.py.

njzjz added 2 commits November 1, 2024 17:23
Signed-off-by: Jinzhe Zeng <[email protected]>
Signed-off-by: Jinzhe Zeng <[email protected]>
@njzjz njzjz marked this pull request as ready for review November 1, 2024 21:49
@github-actions github-actions bot added the Python label Nov 1, 2024
Comment on lines +281 to +282
# if xp.any(uu < 0):
# raise Exception("coord go beyond table lower boundary")

Check notice

Code scanning / CodeQL

Commented-out code Note

This comment appears to contain commented-out code.
deepmd/dpmodel/utils/nlist.py Outdated Show resolved Hide resolved
Copy link
Contributor

coderabbitai bot commented Nov 1, 2024

Warning

Rate limit exceeded

@njzjz has exceeded the limit for the number of commits or files that can be reviewed per hour. Please wait 16 minutes and 38 seconds before requesting another review.

⌛ How to resolve this issue?

After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

We recommend that you space out your commits to avoid hitting the rate limit.

🚦 How do rate limits work?

CodeRabbit enforces hourly rate limits for each developer per organization.

Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.

Please see our FAQ for further information.

📥 Commits

Reviewing files that changed from the base of the PR and between 84803b8 and 0d7c740.

📝 Walkthrough
📝 Walkthrough
📝 Walkthrough

Walkthrough

This pull request introduces significant updates across various files in the deepmd library, primarily focusing on enhancing compatibility with array-like structures through the array_api_compat module. Key changes include modifications to atomic models (LinearEnergyAtomicModel, PairTabAtomicModel) to utilize array API functions for operations, updates to distance calculations in neighbor list functions, and the introduction of new classes and methods for improved model handling. Additionally, a new file for safe gradient functions is added to enhance robustness in mathematical operations.

Changes

File Change Summary
deepmd/dpmodel/atomic_model/linear_atomic_model.py Updated LinearEnergyAtomicModel and DPZBLLinearEnergyAtomicModel classes to use array_api_compat for array operations.
deepmd/dpmodel/atomic_model/pairtab_atomic_model.py Enhanced PairTabAtomicModel to integrate array_api_compat, updating methods for array operations.
deepmd/dpmodel/descriptor/dpa1.py Modified NeighborGatedAttentionLayer to use safe_for_vector_norm for vector normalization.
deepmd/dpmodel/model/make_model.py Changed distance calculations in CM class to use squared differences instead of Euclidean norm.
deepmd/dpmodel/utils/nlist.py Updated build_multiple_neighbor_list and extend_coord_with_ghosts functions to use array_api_compat for array operations.
deepmd/dpmodel/utils/safe_gradient.py Added functions safe_for_sqrt and safe_for_vector_norm for safe mathematical operations.
deepmd/jax/atomic_model/linear_atomic_model.py Introduced DPZBLLinearEnergyAtomicModel class with custom __setattr__ method.
deepmd/jax/atomic_model/pairtab_atomic_model.py Added PairTabAtomicModel class with overridden __setattr__ method.
deepmd/jax/model/__init__.py Imported DPZBLLinearEnergyAtomicModel and updated __all__ list.
deepmd/jax/model/dp_zbl_model.py Introduced DPZBLModel class with custom attribute handling and new forward_common_atomic method.
deepmd/jax/model/model.py Added get_zbl_model function for constructing DPZBLModel.
source/tests/consistent/model/test_zbl_ener.py Enhanced tests for JAX backend compatibility with new imports and properties.

Possibly related PRs

Suggested labels

Docs

Suggested reviewers

  • wanghan-iapcm
  • iProzd

Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. If you find it useful, would you consider giving us a shout-out on your favorite social media?

❤️ Share
🪧 Tips

Chat

There are 3 ways to chat with CodeRabbit:

  • Review comments: Directly reply to a review comment made by CodeRabbit. Example:
    • I pushed a fix in commit <commit_id>, please review it.
    • Generate unit testing code for this file.
    • Open a follow-up GitHub issue for this discussion.
  • Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query. Examples:
    • @coderabbitai generate unit testing code for this file.
    • @coderabbitai modularize this function.
  • PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
    • @coderabbitai gather interesting stats about this repository and render them as a table. Additionally, render a pie chart showing the language distribution in the codebase.
    • @coderabbitai read src/utils.ts and generate unit testing code.
    • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.
    • @coderabbitai help me debug CodeRabbit configuration file.

Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments.

CodeRabbit Commands (Invoked using PR comments)

  • @coderabbitai pause to pause the reviews on a PR.
  • @coderabbitai resume to resume the paused reviews.
  • @coderabbitai review to trigger an incremental review. This is useful when automatic reviews are disabled for the repository.
  • @coderabbitai full review to do a full review from scratch and review all the files again.
  • @coderabbitai summary to regenerate the summary of the PR.
  • @coderabbitai resolve resolve all the CodeRabbit review comments.
  • @coderabbitai configuration to show the current CodeRabbit configuration for the repository.
  • @coderabbitai help to get help.

Other keywords and placeholders

  • Add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.
  • Add @coderabbitai summary to generate the high-level summary at a specific location in the PR description.
  • Add @coderabbitai anywhere in the PR title to generate the title automatically.

CodeRabbit Configuration File (.coderabbit.yaml)

  • You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
  • Please see the configuration documentation for more information.
  • If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json

Documentation and Community

  • Visit our Documentation for detailed information on how to use CodeRabbit.
  • Join our Discord Community to get help, request features, and share feedback.
  • Follow us on X/Twitter for updates and announcements.

Copy link
Contributor

@coderabbitai coderabbitai bot left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Actionable comments posted: 12

🧹 Outside diff range and nitpick comments (6)
deepmd/jax/model/model.py (2)

60-96: Add docstring and improve input validation

The function lacks documentation and proper input validation for required parameters.

Consider adding a docstring and input validation:

 def get_zbl_model(data: dict) -> DPZBLModel:
+    """Create a DPZBLModel combining deep potential and pair table models.
+
+    Parameters
+    ----------
+    data : dict
+        Configuration dictionary containing:
+        - descriptor: dict with model descriptor settings
+        - fitting_net: dict with fitting network settings
+        - use_srtab: str, path to the pair table file
+        - sw_rmin: float, minimum radius for switching function
+        - sw_rmax: float, maximum radius for switching function
+        - type_map: list[str], atom type mapping
+        - atom_exclude_types: list, optional
+        - pair_exclude_types: list, optional
+
+    Returns
+    -------
+    DPZBLModel
+        Combined model instance
+
+    Raises
+    ------
+    ValueError
+        If required parameters are missing or fitting type is unknown
+    """
+    required_keys = {'descriptor', 'fitting_net', 'use_srtab', 'sw_rmin', 'sw_rmax', 'type_map'}
+    missing_keys = required_keys - data.keys()
+    if missing_keys:
+        raise ValueError(f"Missing required parameters: {missing_keys}")

75-83: Consider caching the pair table model

The PairTabAtomicModel is initialized with a file path and likely loads data from disk. Consider:

  1. Implementing caching mechanism for the loaded pair table data
  2. Adding memory usage warnings for large pair tables
  3. Documenting performance implications in the model's docstring
deepmd/dpmodel/model/make_model.py (1)

478-485: LGTM! Improved robustness of distance calculations.

The changes to use squared distances instead of norm is a good optimization that:

  • Prevents NaN errors from JAX during norm calculation
  • Improves performance by avoiding unnecessary square root operations
  • Maintains mathematical correctness by comparing squared distances

Consider adding a unit test that specifically verifies this behavior with JAX to ensure the changes prevent the NaN errors as intended.

deepmd/dpmodel/atomic_model/pairtab_atomic_model.py (2)

336-336: Use standard integer type in type annotations

Annotating nspline with np.int64 might cause issues with type checkers expecting standard Python types. Consider using int for type annotations to enhance code clarity and compatibility.

Apply this diff to update the type annotation:

-def _extract_spline_coefficient(
-    i_type: np.ndarray,
-    j_type: np.ndarray,
-    idx: np.ndarray,
-    tab_data: np.ndarray,
-    nspline: np.int64,
+) -> np.ndarray:
+def _extract_spline_coefficient(
+    i_type: np.ndarray,
+    j_type: np.ndarray,
+    idx: np.ndarray,
+    tab_data: np.ndarray,
+    nspline: int,
+) -> np.ndarray:

372-372: Ensure consistent type casting with array namespace

Casting to built-in int may lead to inconsistencies across different array backends. For consistency and to prevent potential issues, consider casting to xp.int64.

Apply this diff to update the casting:

-clipped_indices = xp.clip(expanded_idx, 0, nspline - 1).astype(int)
+clipped_indices = xp.clip(expanded_idx, 0, nspline - 1).astype(xp.int64)
deepmd/dpmodel/atomic_model/linear_atomic_model.py (1)

73-82: Simplify 'mapping_list' initialization

Consider initializing mapping_list directly as an instance variable to improve code clarity:

- mapping_list = []
  common_type_map = set(type_map)
  self.type_map = type_map
  for tpmp in sub_model_type_maps:
      if not common_type_map.issubset(set(tpmp)):
          err_msg.append(
              f"type_map {tpmp} is not a subset of type_map {type_map}"
          )
      mapping_list.append(self.remap_atype(tpmp, self.type_map))
- self.mapping_list = mapping_list
+ self.mapping_list = []
+ for tpmp in sub_model_type_maps:
+     if not common_type_map.issubset(set(tpmp)):
+         err_msg.append(
+             f"type_map {tpmp} is not a subset of type_map {type_map}"
+         )
+     self.mapping_list.append(self.remap_atype(tpmp, self.type_map))
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 8355947 and 1b3ea6b.

📒 Files selected for processing (12)
  • deepmd/dpmodel/atomic_model/linear_atomic_model.py (7 hunks)
  • deepmd/dpmodel/atomic_model/pairtab_atomic_model.py (8 hunks)
  • deepmd/dpmodel/descriptor/dpa1.py (2 hunks)
  • deepmd/dpmodel/model/make_model.py (1 hunks)
  • deepmd/dpmodel/utils/nlist.py (1 hunks)
  • deepmd/dpmodel/utils/safe_gradient.py (1 hunks)
  • deepmd/jax/atomic_model/linear_atomic_model.py (1 hunks)
  • deepmd/jax/atomic_model/pairtab_atomic_model.py (1 hunks)
  • deepmd/jax/model/__init__.py (1 hunks)
  • deepmd/jax/model/dp_zbl_model.py (1 hunks)
  • deepmd/jax/model/model.py (3 hunks)
  • source/tests/consistent/model/test_zbl_ener.py (5 hunks)
🧰 Additional context used
🪛 GitHub Check: CodeQL
deepmd/dpmodel/atomic_model/pairtab_atomic_model.py

[notice] 281-282: Commented-out code
This comment appears to contain commented-out code.

🪛 Ruff
deepmd/dpmodel/utils/nlist.py

228-228: Local variable nall is assigned to but never used

Remove assignment to unused variable nall

(F841)

deepmd/dpmodel/utils/safe_gradient.py

22-25: Use ternary operator mask_squeezed = mask if keepdims else xp.squeeze(mask, axis=axis) instead of if-else-block

Replace if-else-block with mask_squeezed = mask if keepdims else xp.squeeze(mask, axis=axis)

(SIM108)

🔇 Additional comments (22)
deepmd/jax/model/__init__.py (1)

2-4: LGTM! Clean module organization.

The changes properly expose the new DPZBLLinearEnergyAtomicModel while maintaining good Python packaging practices. The import structure is clean and the __all__ list is correctly updated to include the new model.

Also applies to: 9-12

deepmd/jax/atomic_model/pairtab_atomic_model.py (3)

1-16: LGTM: Well-organized imports with proper licensing.

The file has appropriate LGPL-3.0-or-later licensing and well-structured imports grouped by source.


19-20: LGTM: Proper Flax module definition.

The class correctly extends PairTabAtomicModelDP and is properly decorated with @flax_module for Flax compatibility.


1-27: Verify the implementation of mentioned methods.

The AI summary mentions several methods that are not visible in the provided code:

  • forward_atomic
  • _pair_tabulated_inter
  • _extract_spline_coefficient
✅ Verification successful

Implementation follows expected inheritance pattern

The JAX implementation correctly inherits from PairTabAtomicModelDP which contains all the required methods:

  • forward_atomic
  • _pair_tabulated_inter
  • _extract_spline_coefficient

The JAX class only overrides __setattr__ to handle JAX-specific array conversions while inheriting the core functionality from the parent class, which is the expected pattern for framework-specific implementations.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the existence and implementation of the mentioned methods
# Expected: Find method implementations in the file

echo "Searching for method implementations..."
rg -U "def (forward_atomic|_pair_tabulated_inter|_extract_spline_coefficient)" "deepmd/jax/atomic_model/pairtab_atomic_model.py"

Length of output: 217


Script:

#!/bin/bash
# Let's check the parent class implementation and inheritance chain
echo "Checking parent class implementation..."
rg -U "class PairTabAtomicModelDP" "deepmd/dpmodel/atomic_model/pairtab_atomic_model.py" -A 10

echo -e "\nChecking for method implementations in parent class..."
rg -U "def (forward_atomic|_pair_tabulated_inter|_extract_spline_coefficient)" "deepmd/dpmodel/atomic_model/pairtab_atomic_model.py"

echo -e "\nChecking if methods are implemented in any base classes..."
fd "atomic_model" --type f | xargs rg -U "def (forward_atomic|_pair_tabulated_inter|_extract_spline_coefficient)"

Length of output: 1573

deepmd/dpmodel/utils/safe_gradient.py (3)

1-9: LGTM! Well-documented header with helpful reference.

The file header is properly licensed and documented, with a useful reference to JAX documentation explaining the gradient issues being addressed.


11-15: LGTM! Robust implementation of safe sqrt.

The implementation correctly handles edge cases and follows JAX's recommendations for safe gradients. Consider verifying the behavior with edge cases.

Let's verify the implementation with some test cases:

def test_safe_sqrt():
    # Test cases:
    # 1. x = 0.0 should return 0.0 with zero gradient
    # 2. x < 0 should return 0.0
    # 3. x > 0 should return sqrt(x)
    import jax
    import jax.numpy as jnp
    
    x = jnp.array([4.0, 0.0, -1.0])
    y = safe_for_sqrt(x)
    # Expected: [2.0, 0.0, 0.0]
    
    grad_fn = jax.grad(lambda x: safe_for_sqrt(x).sum())
    grad = grad_fn(x)
    # Expected: [0.25, 0.0, 0.0]

18-32: LGTM! Consider a minor optimization.

The implementation correctly handles vector norm calculation with proper handling of edge cases and parameters.

Consider using a ternary operator for better readability:

-    if keepdims:
-        mask_squeezed = mask
-    else:
-        mask_squeezed = xp.squeeze(mask, axis=axis)
+    mask_squeezed = mask if keepdims else xp.squeeze(mask, axis=axis)

Let's verify the implementation with some test cases:

def test_safe_vector_norm():
    # Test cases:
    # 1. Zero vector should return 0 with zero gradient
    # 2. Non-zero vector should return correct norm
    # 3. Mixed case with axis and keepdims
    import jax
    import jax.numpy as jnp
    
    x = jnp.array([[3.0, 4.0, 0.0], [0.0, 0.0, 0.0]])
    y = safe_for_vector_norm(x, axis=1)
    # Expected: [5.0, 0.0]
    
    grad_fn = jax.grad(lambda x: safe_for_vector_norm(x, axis=1).sum())
    grad = grad_fn(x)
    # Expected: [[0.6, 0.8, 0.0], [0.0, 0.0, 0.0]]
🧰 Tools
🪛 Ruff

22-25: Use ternary operator mask_squeezed = mask if keepdims else xp.squeeze(mask, axis=axis) instead of if-else-block

Replace if-else-block with mask_squeezed = mask if keepdims else xp.squeeze(mask, axis=axis)

(SIM108)

deepmd/jax/atomic_model/linear_atomic_model.py (3)

1-22: LGTM: Well-organized imports with proper licensing.

The imports are properly organized and the LGPL-3.0-or-later license is correctly declared.


25-26: LGTM: Proper class definition with Flax compatibility.

The class is correctly decorated with @flax_module for JAX/Flax compatibility and properly inherits from the base DP implementation.


1-38: Verify consistency with other JAX models.

Let's verify that this implementation follows the same patterns as other JAX models in the codebase.

✅ Verification successful

Let me try with corrected paths and more specific patterns.


Implementation is consistent with JAX model patterns

The implementation follows the established patterns in the JAX codebase:

  • Uses the common base_atomic_model_set_attr helper like other JAX models
  • Consistently wraps JAX arrays with ArrayAPIVariable and to_jax_array similar to PairTabAtomicModel
  • Properly inherits and extends the DP model base class like other JAX atomic models
  • Correctly handles model serialization/deserialization in the same way as other implementations
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check consistency of array API usage across JAX models

# Check array API usage patterns in other JAX models
echo "Checking array API usage patterns..."
rg -l "ArrayAPIVariable|to_jax_array" "deepmd/jax/**/*model*.py"

# Check base class method overrides
echo "Checking __setattr__ implementations..."
ast-grep --pattern 'class $_ {
  $$$
  __setattr__($_, $_) {
    $$$
    ArrayAPIVariable($$$)
    $$$
  }
  $$$
}'

Length of output: 421


Script:

#!/bin/bash
# Check array API usage patterns in JAX models
echo "Checking array API usage patterns..."
rg -l "ArrayAPIVariable|to_jax_array" deepmd/jax/atomic_model/

# Check __setattr__ implementations in JAX models
echo "Checking __setattr__ implementations..."
rg -A 10 "__setattr__" deepmd/jax/atomic_model/

# Check base class implementations
echo "Checking base class patterns..."
rg -A 5 "class.*AtomicModel" deepmd/jax/atomic_model/

Length of output: 4270

deepmd/jax/model/model.py (2)

6-26: LGTM: Imports are well-organized and necessary

The new imports are properly structured and all are utilized in the implementation of the ZBL model functionality.


111-112: Verify condition ordering and model compatibility

The current implementation checks for spin models before ZBL models. Please verify:

  1. If this ordering is intentional
  2. If ZBL and spin models can coexist
  3. If additional validation is needed when both 'spin' and 'use_srtab' are present in the data

Let's check if there are any existing tests or implementations combining spin and ZBL:

✅ Verification successful

Based on the test files and configuration examples found, I can now provide a final response:

Condition ordering is correct, no compatibility issues found

The current implementation is correct because:

  1. The ordering of conditions is intentional - checking for spin models before ZBL models is appropriate as they are independent features.
  2. The test files show that ZBL models are configured independently through the use_srtab parameter and its associated settings (smin_alpha, sw_rmin, sw_rmax).
  3. There's no evidence in the test files of any conflicts or special handling needed when both spin and ZBL features are present, suggesting they operate independently.
  4. The test configurations (particularly in source/tests/universal/common/cases/model/model.py) show ZBL and spin models are tested separately, indicating they are designed to be independent features.
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for any mentions of both spin and ZBL/srtab in tests or implementations
rg -l "spin.*srtab|srtab.*spin" 

Length of output: 33


Script:

#!/bin/bash
# Let's search for the get_model function implementation to understand the context better
ast-grep --pattern 'def get_model($$$)'

# Let's also search for get_zbl_model implementation
ast-grep --pattern 'def get_zbl_model($$$)'

# Search for any configuration or test files containing 'srtab' to understand usage
rg -l "srtab"

# Search for any configuration or test files containing both ZBL references
rg -l "zbl"

# Let's also check for any documentation about model compatibility
fd "README|CONTRIBUTING|docs" --exec cat {}

Length of output: 21462


Script:

#!/bin/bash
# Let's search for the implementation of get_model and get_zbl_model to understand the order and compatibility
ast-grep --pattern 'def get_model($$$)' deepmd/jax/model/model.py

# Let's also check the implementation of get_zbl_model
ast-grep --pattern 'def get_zbl_model($$$)' deepmd/jax/model/model.py

# Search for any test files that might show model compatibility
rg -A 10 "use_srtab" source/tests/

Length of output: 9035

source/tests/consistent/model/test_zbl_ener.py (3)

16-16: LGTM: Import of JAX installation flag.

The import follows the established pattern for backend support flags.


31-35: LGTM: JAX model imports.

The conditional import block follows the established pattern and properly handles the case when JAX is not installed.


95-95: LGTM: JAX model class property.

The property follows the established pattern for backend model class references.

deepmd/dpmodel/descriptor/dpa1.py (2)

30-32: LGTM: Safe gradient import added.

The import of safe_for_vector_norm is correctly placed and follows the project's import style.


Line range hint 949-955: LGTM: Enhanced numerical stability with safe vector normalization.

The use of safe_for_vector_norm improves robustness by safely handling potential division by zero cases during vector normalization. This is a good practice for numerical stability.

The subsequent division operation also includes a safeguard using xp.maximum(normed, xp.full_like(normed, 1e-12)), which provides additional protection against division by very small numbers.

deepmd/jax/model/dp_zbl_model.py (1)

31-50: 🛠️ Refactor suggestion

Avoid redundant method if base class implementation suffices

If DPZBLModelDP already provides a suitable forward_common_atomic method, overriding it here may be unnecessary. Redundant methods can clutter the codebase and cause maintenance challenges. Unless there is a specific reason to override, consider removing this method to rely on the base class's implementation.

To confirm, please check if the parent class DPZBLModelDP has an appropriate forward_common_atomic method. If it does, and no additional functionality is added here, you can safely remove this method.

deepmd/dpmodel/utils/nlist.py (2)

236-239: Efficient calculation avoids NaN errors in JAX

Great job replacing the distance calculation with squared distances to prevent NaN errors when using JAX. This maintains correctness while improving robustness.


224-225: Verify the usage of xp.concat

Please ensure that xp.concat is the correct function for concatenation in the array API compatible namespace being used. In some array libraries, the correct function might be xp.concatenate.

Run the following script to check if xp has the concat attribute:

✅ Verification successful

Let me search for the definition and usage of concat in the array API namespace.


Let me try a different approach to search for the array API implementation and usage of concatenation functions.


Based on the search results, I can now generate the final response:

Both concat and concatenate are used in the codebase

The codebase uses both xp.concat and xp.concatenate functions interchangeably. This is safe because array libraries typically support both as aliases for the same operation. For example, in NumPy and other array libraries, concat is a commonly provided alias for concatenate.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify if `xp` has the `concat` function.

# Test: Search for `concat` method in the array API namespace. Expect: Definition of `concat`.
rg --files-with-matches 'def concat' $(fd -e py)

Length of output: 26861


Script:

#!/bin/bash
# Search for array API concat definition and usage
rg -A 5 "def concat" deepmd/dpmodel/array_api.py

Length of output: 50


Script:

#!/bin/bash
# Search for both concat and concatenate in array API related files
rg -l "concat|concatenate" deepmd/dpmodel/array_api.py deepmd/backend/jax.py deepmd/backend/pytorch.py deepmd/backend/tensorflow.py

# Also search for the usage context of concat in the nlist.py file
rg -B 2 -A 2 "xp.concat" deepmd/dpmodel/utils/nlist.py

Length of output: 845

deepmd/dpmodel/atomic_model/pairtab_atomic_model.py (2)

Line range hint 200-226: Efficient integration of array API compatibility

The updates to use xp as the array namespace and the adoption of array API functions improve compatibility and flexibility across different array backends. This enhances the maintainability and scalability of the code.


326-326: Robust computation of pairwise distances

Utilizing safe_for_sqrt ensures numerical stability when computing pairwise distances by preventing issues arising from negative inputs due to floating-point inaccuracies. This enhances the reliability of distance calculations.

deepmd/jax/model/dp_zbl_model.py Show resolved Hide resolved
deepmd/jax/model/dp_zbl_model.py Show resolved Hide resolved
deepmd/dpmodel/utils/nlist.py Outdated Show resolved Hide resolved
Signed-off-by: Jinzhe Zeng <[email protected]>
Copy link
Contributor

@coderabbitai coderabbitai bot left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Actionable comments posted: 3

🧹 Outside diff range and nitpick comments (1)
deepmd/dpmodel/utils/safe_gradient.py (1)

22-26: Simplify conditional logic using ternary operator.

The if-else block can be simplified for better readability.

-    if keepdims:
-        mask_squeezed = mask
-    else:
-        mask_squeezed = xp.squeeze(mask, axis=axis)
+    mask_squeezed = mask if keepdims else xp.squeeze(mask, axis=axis)
🧰 Tools
🪛 Ruff

22-25: Use ternary operator mask_squeezed = mask if keepdims else xp.squeeze(mask, axis=axis) instead of if-else-block

Replace if-else-block with mask_squeezed = mask if keepdims else xp.squeeze(mask, axis=axis)

(SIM108)

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 1b3ea6b and 41863c9.

📒 Files selected for processing (1)
  • deepmd/dpmodel/utils/safe_gradient.py (1 hunks)
🧰 Additional context used
🪛 Ruff
deepmd/dpmodel/utils/safe_gradient.py

22-25: Use ternary operator mask_squeezed = mask if keepdims else xp.squeeze(mask, axis=axis) instead of if-else-block

Replace if-else-block with mask_squeezed = mask if keepdims else xp.squeeze(mask, axis=axis)

(SIM108)

🔇 Additional comments (1)
deepmd/dpmodel/utils/safe_gradient.py (1)

1-9: LGTM! Well-documented module with clear licensing.

The module header provides excellent context about gradient handling with a reference to JAX documentation.

deepmd/dpmodel/utils/safe_gradient.py Show resolved Hide resolved
deepmd/dpmodel/utils/safe_gradient.py Show resolved Hide resolved
deepmd/dpmodel/utils/safe_gradient.py Show resolved Hide resolved
Copy link

codecov bot commented Nov 2, 2024

Codecov Report

Attention: Patch coverage is 97.05882% with 4 lines in your changes missing coverage. Please review.

Project coverage is 84.40%. Comparing base (bfbe2ed) to head (0d7c740).
Report is 1 commits behind head on devel.

Files with missing lines Patch % Lines
deepmd/dpmodel/atomic_model/linear_atomic_model.py 94.44% 1 Missing ⚠️
deepmd/dpmodel/utils/safe_gradient.py 91.66% 1 Missing ⚠️
deepmd/jax/atomic_model/pairtab_atomic_model.py 93.75% 1 Missing ⚠️
deepmd/jax/model/model.py 95.45% 1 Missing ⚠️
Additional details and impacted files
@@            Coverage Diff             @@
##            devel    #4301      +/-   ##
==========================================
+ Coverage   84.38%   84.40%   +0.02%     
==========================================
  Files         563      567       +4     
  Lines       52810    52910     +100     
  Branches     3054     3057       +3     
==========================================
+ Hits        44564    44659      +95     
- Misses       7287     7292       +5     
  Partials      959      959              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

Copy link
Collaborator

@wanghan-iapcm wanghan-iapcm left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

the autodiff should not pass the nlist, see my comment on using the jax.lax.stop_gradient that may fix the issue.

Signed-off-by: Jinzhe Zeng <[email protected]>
Copy link
Contributor

@coderabbitai coderabbitai bot left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 41863c9 and 84803b8.

📒 Files selected for processing (3)
  • deepmd/jax/atomic_model/dp_atomic_model.py (3 hunks)
  • deepmd/jax/atomic_model/linear_atomic_model.py (1 hunks)
  • deepmd/jax/atomic_model/pairtab_atomic_model.py (1 hunks)
🔇 Additional comments (8)
deepmd/jax/atomic_model/dp_atomic_model.py (3)

4-4: LGTM: Import additions are appropriate

The new imports are necessary for JAX integration and type hinting, following the project's conventions.

Also applies to: 17-20


37-53: LGTM: Well-structured method implementation

The method is well-typed and properly forwards to the parent implementation while handling the neighbor list gradient appropriately.


49-49: Verify consistent usage of stop_gradient

The use of stop_gradient on nlist is a significant choice that prevents gradient computation through the neighbor list. Let's verify this pattern is consistent across similar atomic models.

✅ Verification successful

Usage of stop_gradient on nlist is consistent across atomic models

The verification shows that stop_gradient is consistently applied to nlist in all atomic model implementations:

  • deepmd/jax/atomic_model/dp_atomic_model.py
  • deepmd/jax/atomic_model/linear_atomic_model.py
  • deepmd/jax/atomic_model/pairtab_atomic_model.py
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for consistent usage of stop_gradient with nlist across atomic models
# Expected: All atomic models should apply stop_gradient to nlist in forward_common_atomic

# Search for forward_common_atomic methods that use nlist
ast-grep --pattern 'def forward_common_atomic($$$) {
  $$$
  nlist
  $$$
}'

# Search for stop_gradient usage with nlist
rg -A 2 'stop_gradient.*nlist' deepmd/jax/atomic_model/

Length of output: 849

deepmd/jax/atomic_model/pairtab_atomic_model.py (3)

1-22: LGTM! Well-organized imports and proper licensing.

The file structure follows best practices with proper licensing and well-organized imports grouped by functionality.


24-25: LGTM! Proper class definition with Flax integration.

The class correctly inherits from the base DP model and uses the Flax module decorator for JAX compatibility.


34-50: Verify the necessity of stop_gradient for nlist parameter.

The implementation looks correct, but let's verify why only the nlist parameter needs gradient stopping while other parameters don't.

✅ Verification successful

Let me gather more context about the base class and its implementation to understand this pattern better.


Let me search for the base implementation and any documentation about the neighbor list handling.


Let me search for the neighbor list computation to understand why its gradient needs to be stopped.


Let me check the neighbor list related implementations and their base classes.


Based on the evidence gathered from the codebase, I can now provide a final response about the use of stop_gradient on nlist.

The use of stop_gradient on nlist parameter is correct and necessary.

The neighbor list (nlist) is a structural input that defines the spatial relationships between atoms. It's computed based on geometric criteria (like cutoff distances) and doesn't need gradient propagation during backpropagation because:

  1. It's a discrete structure that determines which atoms are considered neighbors
  2. The neighbor list computation is not a differentiable operation
  3. All atomic models (DPAtomicModel, PairTabAtomicModel, LinearAtomicModel) consistently apply this pattern

This is a common practice in molecular modeling where structural inputs that define connectivity or neighbor relationships are treated as static during gradient computation.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for other usages of stop_gradient with nlist to understand the pattern
rg -l "stop_gradient.*nlist" | while read -r file; do
    echo "=== $file ==="
    rg -A 2 -B 2 "stop_gradient.*nlist" "$file"
done

# Search for any comments or documentation explaining this behavior
rg -l -g "*.md" -g "*.rst" "nlist.*gradient" | while read -r file; do
    echo "=== $file ==="
    rg -A 2 -B 2 "nlist.*gradient" "$file"
done

Length of output: 1217


Script:

#!/bin/bash
# Find the base class implementation
ast-grep --pattern 'class $_AtomicModel' 

# Look for any comments or docstrings in the atomic model files
rg -g "*.py" -B 5 "class.*AtomicModel" deepmd/jax/atomic_model/

# Check if there are any tests that might explain this behavior
fd "test.*atomic.*py" | while read -r file; do
    echo "=== $file ==="
    rg -A 2 -B 2 "forward_common_atomic|stop_gradient.*nlist" "$file"
done

Length of output: 11587


Script:

#!/bin/bash
# Look for base class implementation and any documentation about nlist
rg -g "*.py" -B 10 "class DPAtomicModelDP" deepmd/jax/atomic_model/

# Search for any comments or documentation about neighbor list handling
rg -g "*.py" "nlist" -C 5 deepmd/jax/atomic_model/

# Look for any gradient-related operations in the codebase
rg -g "*.py" "gradient|backward" -C 5 deepmd/jax/atomic_model/

Length of output: 6680


Script:

#!/bin/bash
# Search for neighbor list computation
rg -g "*.py" -B 10 "def compute.*nlist" deepmd/jax/

# Look for any documentation about neighbor list in docstrings
rg -g "*.py" -A 10 '""".*neighbor.*"""' deepmd/jax/

# Search for any imports or utilities related to neighbor list
rg -g "*.py" "import.*neighbor|class.*Neighbor" deepmd/jax/

Length of output: 1441


Script:

#!/bin/bash
# Look for the base neighbor list implementations
ast-grep --pattern 'class $_NeighborGatedAttention' 

# Check the content of neighbor_stat.py
cat deepmd/jax/utils/neighbor_stat.py

# Look for any documentation in the descriptor module
rg -g "*.py" -B 10 "class NeighborGatedAttention" deepmd/jax/descriptor/

Length of output: 4309

deepmd/jax/atomic_model/linear_atomic_model.py (2)

32-43: Consider adding error handling for input validation and deserialization failures.

While the __setattr__ method assigns values based on attribute names, adding error handling would enhance robustness. Specifically:

  • Validate input types for attributes like mapping_list, zbl_weight, and models.
  • Handle potential exceptions during deserialization of the models.

45-61: Verify the use of jax.lax.stop_gradient on nlist.

In the forward_common_atomic method, nlist is wrapped with jax.lax.stop_gradient, which stops gradients from flowing through nlist. Please confirm if stopping gradients on nlist is intentional, as it affects backpropagation and may impact model training.

@wanghan-iapcm
Copy link
Collaborator

are you planning to revert the modification on the nlist?

njzjz added 2 commits November 3, 2024 04:45
Signed-off-by: Jinzhe Zeng <[email protected]>
@njzjz
Copy link
Member Author

njzjz commented Nov 3, 2024

are you planning to revert the modification on the nlist?

Reverted.

@njzjz njzjz requested a review from wanghan-iapcm November 3, 2024 10:05
@wanghan-iapcm wanghan-iapcm added this pull request to the merge queue Nov 4, 2024
Merged via the queue into deepmodeling:devel with commit 7aaf284 Nov 4, 2024
60 checks passed
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
Projects
None yet
Development

Successfully merging this pull request may close these issues.

3 participants