Isolate TwoPuncture from ABE OMP settings

makefile_and_run.py

@@ -55,14 +55,22 @@ NUMACTL_CPU_BIND = get_last_n_cores_per_socket(n=32)
 BUILD_JOBS = 64
 
 
-def build_runtime_env():
-    """Inject OpenMP runtime settings from the Python input file."""
+def build_abe_runtime_env():
+    """Inject OpenMP runtime settings only for the main ABE evolution run."""
     runtime_env = os.environ.copy()
     omp_threads = max(1, int(getattr(input_data, "OMP_Threads", 1)))
     runtime_env["OMP_NUM_THREADS"] = str(omp_threads)
     return runtime_env
 
 
+def build_twopuncture_runtime_env():
+    """Let TwoPunctureABE use the runtime default instead of the ABE OMP override."""
+    runtime_env = os.environ.copy()
+    runtime_env.pop("OMP_NUM_THREADS", None)
+    runtime_env.pop("OMP_THREAD_LIMIT", None)
+    return runtime_env
+
+
 ##################################################################
 
 
@@ -172,7 +180,7 @@ def run_ABE():
         stdout=subprocess.PIPE,
         stderr=subprocess.STDOUT,
         text=True,
-        env=build_runtime_env(),
+        env=build_abe_runtime_env(),
     )
 
     ## Write ABE run output to file while printing to stdout
@@ -219,7 +227,7 @@ def run_TwoPunctureABE():
         stdout=subprocess.PIPE,
         stderr=subprocess.STDOUT,
         text=True,
-        env=build_runtime_env(),
+        env=build_twopuncture_runtime_env(),
     )
 
     ## Write TwoPunctureABE run output to file while printing to stdout