diff --git a/meshmode/discretization/__init__.py b/meshmode/discretization/__init__.py
index 54752dd6dbad136d3435ecebad937ca203099ecd..3477d20b08958e61a5f31398af511ef5201629ac 100644
--- a/meshmode/discretization/__init__.py
+++ b/meshmode/discretization/__init__.py
@@ -23,7 +23,7 @@ THE SOFTWARE.
 """
 
 import numpy as np
-from pytools import memoize_method, memoize_method_nested
+from pytools import memoize_method, memoize_in
 import loopy as lp
 import pyopencl as cl
 import pyopencl.array  # noqa
@@ -196,9 +196,8 @@ class Discretization(object):
     def zeros(self, queue, dtype=None, extra_dims=None):
         return self.empty(queue, dtype, extra_dims).fill(0)
 
-    def num_reference_derivative(
-            self, queue, ref_axes, vec):
-        @memoize_method_nested
+    def num_reference_derivative(self, queue, ref_axes, vec):
+        @memoize_in(self, "reference_derivative_knl")
         def knl():
             knl = lp.make_kernel(
                 """{[k,i,j]:
@@ -226,7 +225,7 @@ class Discretization(object):
         return result
 
     def quad_weights(self, queue):
-        @memoize_method_nested
+        @memoize_in(self, "quad_weights_knl")
         def knl():
             knl = lp.make_kernel(
                 "{[k,i]: 0<=k<nelements and 0<=i<ndiscr_nodes}",
@@ -243,7 +242,7 @@ class Discretization(object):
 
     @memoize_method
     def nodes(self):
-        @memoize_method_nested
+        @memoize_in(self, "nodes_knl")
         def knl():
             knl = lp.make_kernel(
                 """{[d,k,i,j]:
diff --git a/meshmode/discretization/connection.py b/meshmode/discretization/connection.py
index f27a0e2fa28e7f388f5655e1dae60949f9729d1c..4eea25275542eaa5f165d3dd68a5d754ec4eaecf 100644
--- a/meshmode/discretization/connection.py
+++ b/meshmode/discretization/connection.py
@@ -30,7 +30,7 @@ import numpy as np
 import modepy as mp
 import pyopencl as cl
 import pyopencl.array  # noqa
-from pytools import memoize_method, memoize_method_nested, Record
+from pytools import memoize_method, memoize_in, Record
 
 import logging
 logger = logging.getLogger(__name__)
@@ -138,7 +138,7 @@ class DiscretizationConnection(object):
                 ibatch.result_unit_nodes, from_grp.unit_nodes)
 
     def full_resample_matrix(self, queue):
-        @memoize_method_nested
+        @memoize_in(self, "oversample_mat_knl")
         def knl():
             import loopy as lp
             knl = lp.make_kernel(
@@ -185,7 +185,7 @@ class DiscretizationConnection(object):
         return result
 
     def __call__(self, queue, vec):
-        @memoize_method_nested
+        @memoize_in(self, "oversample_knl")
         def knl():
             import loopy as lp
             knl = lp.make_kernel(