[EXPER] Use improved thrust execution-policy checker

.pre-commit-config.yaml

@@ -7,7 +7,7 @@ ci:
   autoupdate_branch: ""
   autoupdate_commit_msg: "[pre-commit.ci] pre-commit autoupdate"
   autoupdate_schedule: quarterly
-  skip: ["mypy", "verify-alpha-spec"]
+  skip: ["mypy", "verify-alpha-spec", "verify-thrust-exec-policy"]
   submodules: false
 
 repos:
@@ -98,12 +98,6 @@ repos:
         entry: 'pytest\.xfail'
         language: pygrep
         types: [python]
-      - id: use-exec-policy-nosync
-        name: use-exec-policy-nosync
-        description: 'Enforce that rmm::exec_policy_nosync is used instead of rmm::exec_policy (see developer guide)'
-        entry: 'rmm::exec_policy\('
-        language: pygrep
-        types_or: [c, c++, cuda]
       - id: no-unseeded-default-rng
         name: no-unseeded-default-rng
         description: 'Enforce that no non-seeded default_rng is used and default_rng is used instead of np.random.seed'
@@ -144,6 +138,14 @@ repos:
         language: system
         pass_filenames: false
         verbose: true
+      - id: verify-thrust-exec-policy
+        name: verify-thrust-exec-policy
+        description: 'Enforce that rmm::exec_policy_nosync is used when possible (see developer guide)'
+        entry: ./ci/checks/verify_thrust_exec_policy.sh
+        types_or: [c, c++, cuda]
+        language: python
+        pass_filenames: false
+        verbose: true
   - repo: https://github.com/codespell-project/codespell
     rev: v2.4.1
     hooks:

ci/checks/verify_thrust_exec_policy.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+# SPDX-FileCopyrightText: Copyright (c) 2026, NVIDIA CORPORATION.
+# SPDX-License-Identifier: Apache-2.0
+###############################
+# libcudf verify thrust execution policy check
+###############################
+
+python cpp/scripts/verify_thrust_exec_policy.py

cpp/doxygen/developer_guide/DEVELOPER_GUIDE.md

@@ -99,7 +99,7 @@ All headers in cudf should use `#pragma once` for include guards.
 
 Only use `.cu` and `.cuh` if necessary. A good indicator is the inclusion of `__device__` and other
 symbols that are only recognized by `nvcc`. Another indicator is Thrust algorithm APIs with a device
-execution policy (always `rmm::exec_policy_nosync` in libcudf).
+execution policy (always use `rmm::exec_policy_nosync` in libcudf when the return value is not required).
 
 ## Code and Documentation Style and Formatting