Added changelog

CHANGELOG.md

@@ -18,3 +18,5 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - XLB is now installable via pip
 - Complete rewrite of the codebase for better modularity and extensibility based on "Operators" design pattern
 - Added NVIDIA's Warp backend for state-of-the-art performance
+- Added abstraction layer for boundary condition efficient encoding/decoding of auxiliary data
+- Added the capability to add profiles to boundary conditions

xlb/operator/stepper/stepper.py

@@ -13,6 +13,11 @@ def __init__(self, operators, boundary_conditions):
         from xlb.operator.boundary_condition.boundary_condition_registry import boundary_condition_registry
 
         self.operators = operators
+
+        for bc in boundary_conditions:
+            if bc.needs_aux_init and not bc.is_initialized_with_aux_data:
+                raise RuntimeError(f"Boundary condition {bc.__class__.__name__} requires auxiliary data initialization but was not initialized")
+
         self.boundary_conditions = boundary_conditions
 
         # Get velocity set, precision policy, and compute backend