minor fixes on data db

src/eko/evolution_operator/__init__.py

@@ -472,17 +472,12 @@ def integrate(
 
         # run integration in parallel for each grid point
         # or avoid opening a single pool
+        args = (self.run_op_integration, enumerate(np.log(self.int_disp.xgrid_raw)))
         if self.n_pools == 1:
-            res = map(
-                self.run_op_integration,
-                enumerate(np.log(self.int_disp.xgrid_raw)),
-            )
+            res = map(*args)
         else:
             with Pool(self.n_pools) as pool:
-                res = pool.map(
-                    self.run_op_integration,
-                    enumerate(np.log(self.int_disp.xgrid_raw)),
-                )
+                res = pool.map(*args)
 
         # collect results
         for k, row in enumerate(res):

src/ekomark/data/db.py

@@ -22,4 +22,4 @@ class Operator(Base):  # pylint: disable=too-few-public-methods
     ev_op_max_order = Column(Integer)
     ev_op_iterations = Column(Integer)
     Q2grid = Column(Text)
-    n_integration_cores = Column(Integer)
+    backward_inversion = Column(Text)

src/ekomark/data/operators.py

@@ -2,8 +2,6 @@
 """
 Operator card configurations.
 """
-import os
-
 from banana.data import cartesian_product, sql
 
 from eko import interpolation
@@ -19,7 +17,7 @@
     ev_op_max_order=10,
     ev_op_iterations=10,
     backward_inversion="expanded",
-    n_integration_cores=os.cpu_count(),
+    n_integration_cores=0,
     Q2grid=[100],
 )