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@jan-janssen jan-janssen commented Feb 1, 2025

Summary by CodeRabbit

  • Refactor
    • Reorganized executor configuration to perform validations and assignments only when the corresponding backend is selected.
    • Updated public API methods with revised parameter sets, streamlining resource configuration and error handling for various backend types.

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📥 Commits

Reviewing files that changed from the base of the PR and between f422ddd and bfc66d8.

📒 Files selected for processing (1)
  • executorlib/interactive/create.py (5 hunks)

Walkthrough

The pull request refactors the executor creation logic in executorlib/interactive/create.py. It moves checks and resource assignments (such as for flux_executor, cache_directory, and hostname_localhost) inside backend-specific conditional blocks for flux, slurm, and local. The change updates method signatures for create_executor, create_flux_allocation_executor, create_slurm_allocation_executor, and create_local_executor by removing the cores_per_worker parameter and integrating resource configurations into the resource dictionary. Error handling for unsupported backends remains unchanged.

Changes

File Change Summary
executorlib/interactive/create.py - Moved checks (check_init_function, check_pmi) and assignments (cores_per_worker, cache_directory, hostname_localhost) inside flux, slurm, and local backend blocks.
- Updated method signatures for create_executor, create_flux_allocation_executor, create_slurm_allocation_executor, and create_local_executor by removing cores_per_worker and integrating cache_directory and hostname_localhost into resource_dict.
- Retained GPU and command-line checks in create_local_executor.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant ExecutorFactory as create_executor

    Client->>ExecutorFactory: call create_executor(backend, ...)
    alt Backend is "flux", "slurm" or "local"
        ExecutorFactory->>ExecutorFactory: Execute backend-specific checks<br/>& assign cache_directory, hostname_localhost, and other resources
        ExecutorFactory-->>Client: Return appropriate executor instance
    else Unsupported backend
        ExecutorFactory-->>Client: Raise ValueError
    end
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Checks and logic now nest within,
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Actionable comments posted: 2

🔭 Outside diff range comments (1)
executorlib/interactive/create.py (1)

Line range hint 102-102: Fix type error: Remove unexpected keyword argument.

The create_flux_allocation_executor function is called with cores_per_worker but this parameter is not defined in its signature, causing a type error.

Remove the cores_per_worker argument from the function call:

        return create_flux_allocation_executor(
            max_workers=max_workers,
            max_cores=max_cores,
-           cores_per_worker=cores_per_worker,
            resource_dict=resource_dict,
            flux_executor=flux_executor,
            flux_executor_pmi_mode=flux_executor_pmi_mode,
            flux_executor_nesting=flux_executor_nesting,
            flux_log_files=flux_log_files,
            block_allocation=block_allocation,
            init_function=init_function,
        )
🧹 Nitpick comments (1)
executorlib/interactive/create.py (1)

164-165: Add safety checks when updating resource dictionary.

The code directly overwrites cache_directory and hostname_localhost in resource_dict without checking if they already exist.

Add safety checks to prevent unintended overwrites:

-    resource_dict["cache_directory"] = cache_directory
-    resource_dict["hostname_localhost"] = hostname_localhost
+    if cache_directory is not None:
+        resource_dict["cache_directory"] = cache_directory
+    if hostname_localhost is not None:
+        resource_dict["hostname_localhost"] = hostname_localhost
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📥 Commits

Reviewing files that changed from the base of the PR and between 565bb32 and f422ddd.

📒 Files selected for processing (1)
  • executorlib/interactive/create.py (5 hunks)
🧰 Additional context used
🪛 Ruff (0.8.2)
executorlib/interactive/create.py

152-152: Do not use mutable data structures for argument defaults

Replace with None; initialize within function

(B006)


209-209: Do not use mutable data structures for argument defaults

Replace with None; initialize within function

(B006)


249-249: Do not use mutable data structures for argument defaults

Replace with None; initialize within function

(B006)

🪛 GitHub Actions: MyPy
executorlib/interactive/create.py

[error] 102-102: Unexpected keyword argument 'cores_per_worker' for 'create_flux_allocation_executor'.

⏰ Context from checks skipped due to timeout of 90000ms (4)
  • GitHub Check: build (ubuntu-latest, 3.13, .ci_support/environment-mpich.yml)
  • GitHub Check: build (ubuntu-latest, 3.13)
  • GitHub Check: build (ubuntu-latest, 3.13, .ci_support/environment-openmpi.yml)
  • GitHub Check: build (windows-latest, 3.13)
🔇 Additional comments (2)
executorlib/interactive/create.py (2)

214-217: LGTM: Clean implementation of resource handling in SLURM executor.

The implementation correctly handles initialization of resource parameters.


254-262: LGTM: Appropriate validation in local executor.

The implementation includes necessary checks for GPU resources and command line arguments, which are essential for local execution.

max_workers: Optional[int] = None,
max_cores: Optional[int] = None,
cores_per_worker: int = 1,
cache_directory: Optional[str] = None,
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🛠️ Refactor suggestion

Fix mutable default arguments in function signatures.

Using mutable default arguments (resource_dict = {}) can lead to unexpected behavior if the dictionary is modified between function calls, as the same dictionary instance is shared across all calls.

Replace the mutable defaults with None and initialize within the functions:

def create_flux_allocation_executor(
    max_workers: Optional[int] = None,
    max_cores: Optional[int] = None,
    cache_directory: Optional[str] = None,
-   resource_dict: dict = {},
+   resource_dict: Optional[dict] = None,
    flux_executor=None,
    ...
):
+   if resource_dict is None:
+       resource_dict = {}

def create_slurm_allocation_executor(
    max_workers: Optional[int] = None,
    max_cores: Optional[int] = None,
    cache_directory: Optional[str] = None,
-   resource_dict: dict = {},
+   resource_dict: Optional[dict] = None,
    ...
):
+   if resource_dict is None:
+       resource_dict = {}

def create_local_executor(
    max_workers: Optional[int] = None,
    max_cores: Optional[int] = None,
    cache_directory: Optional[str] = None,
-   resource_dict: dict = {},
+   resource_dict: Optional[dict] = None,
    ...
):
+   if resource_dict is None:
+       resource_dict = {}

Also applies to: 208-208, 248-248

Comment on lines 93 to 95
cores_per_worker = resource_dict.get("cores", 1)
resource_dict["cache_directory"] = cache_directory
resource_dict["hostname_localhost"] = hostname_localhost
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🛠️ Refactor suggestion

Standardize resource dictionary initialization across backends.

The handling of cache_directory and hostname_localhost is inconsistent. In the flux backend, they're added to resource_dict, but in slurm and local backends, they're passed as separate parameters.

Standardize by moving these parameters into resource_dict for all backends:

    elif backend == "slurm_allocation":
        check_pmi(backend=backend, pmi=flux_executor_pmi_mode)
        check_executor(executor=flux_executor)
        check_nested_flux_executor(nested_flux_executor=flux_executor_nesting)
        check_flux_log_files(flux_log_files=flux_log_files)
+       resource_dict["cache_directory"] = cache_directory
+       resource_dict["hostname_localhost"] = hostname_localhost
        return create_slurm_allocation_executor(
            max_workers=max_workers,
            max_cores=max_cores,
-           cache_directory=cache_directory,
            resource_dict=resource_dict,
-           hostname_localhost=hostname_localhost,
            block_allocation=block_allocation,
            init_function=init_function,
        )

Apply similar changes to the local backend block.

Also applies to: 122-124, 136-138

@jan-janssen jan-janssen merged commit 2a5c109 into main Feb 1, 2025
28 checks passed
@jan-janssen jan-janssen deleted the create branch February 1, 2025 13:41
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