fix l/m; make rescaling optional

src/fairchem/core/models/escn/escn_exportable.py

@@ -79,6 +79,7 @@ def __init__(
         resolution: int | None = None,
         compile: bool = False,
         export: bool = False,
+        rescale_grid: bool = False,
     ) -> None:
         super().__init__()
 
@@ -103,6 +104,7 @@ def __init__(
         self.distance_function = distance_function
         self.compile = compile
         self.export = export
+        self.rescale_grid = rescale_grid
 
         # non-linear activation function used throughout the network
         self.act = nn.SiLU()
@@ -152,12 +154,11 @@ def __init__(
         # Initialize the transformations between spherical and grid representations
         self.SO3_grid = nn.ModuleDict()
         self.SO3_grid["lmax_lmax"] = SO3_Grid(
-            self.lmax, self.lmax, resolution=resolution
+            self.lmax, self.lmax, resolution=resolution, rescale=self.rescale_grid
         )
         self.SO3_grid["lmax_mmax"] = SO3_Grid(
-            self.lmax, self.mmax, resolution=resolution
+            self.lmax, self.mmax, resolution=resolution, rescale=self.rescale_grid
         )
-        self.mappingReduced = CoefficientMapping([self.lmax], [self.mmax])
 
         # Initialize the blocks for each layer of the GNN
         self.layer_blocks = nn.ModuleList()
@@ -173,7 +174,6 @@ def __init__(
                 self.max_num_elements,
                 self.SO3_grid,
                 self.act,
-                self.mappingReduced,
             )
             self.layer_blocks.append(block)
 
@@ -435,7 +435,6 @@ def __init__(
         max_num_elements: int,
         SO3_grid: SO3_Grid,
         act,
-        mappingReduced,
     ) -> None:
         super().__init__()
         self.layer_idx = layer_idx
@@ -444,7 +443,6 @@ def __init__(
         self.mmax = mmax
         self.sphere_channels = sphere_channels
         self.SO3_grid = SO3_grid
-        self.mappingReduced = mappingReduced
 
         # Message block
         self.message_block = MessageBlock(
@@ -458,7 +456,6 @@ def __init__(
             max_num_elements,
             self.SO3_grid,
             self.act,
-            self.mappingReduced,
         )
 
         # Non-linear point-wise comvolution for the aggregated messages
@@ -547,7 +544,6 @@ def __init__(
         max_num_elements: int,
         SO3_grid: SO3_Grid,
         act,
-        mappingReduced,
     ) -> None:
         super().__init__()
         self.layer_idx = layer_idx
@@ -558,8 +554,9 @@ def __init__(
         self.lmax = lmax
         self.mmax = mmax
         self.edge_channels = edge_channels
-        self.mappingReduced = mappingReduced
-        self.out_mask = self.mappingReduced.coefficient_idx(self.lmax, self.mmax)
+        self.out_mask = CoefficientMapping([self.lmax], [self.lmax]).coefficient_idx(
+            self.lmax, self.mmax
+        )
 
         # Create edge scalar (invariant to rotations) features
         self.edge_block = EdgeBlock(
@@ -577,7 +574,6 @@ def __init__(
             self.lmax,
             self.mmax,
             self.act,
-            self.mappingReduced,
         )
         self.so2_block_target = SO2Block(
             self.sphere_channels,
@@ -586,7 +582,6 @@ def __init__(
             self.lmax,
             self.mmax,
             self.act,
-            self.mappingReduced,
         )
 
     def forward(
@@ -666,15 +661,14 @@ def __init__(
         lmax: int,
         mmax: int,
         act,
-        mappingReduced,
     ) -> None:
         super().__init__()
         self.sphere_channels = sphere_channels
         self.hidden_channels = hidden_channels
         self.lmax = lmax
         self.mmax = mmax
         self.act = act
-        self.mappingReduced = mappingReduced
+        self.mappingReduced = CoefficientMapping([self.lmax], [self.mmax])
 
         num_channels_m0 = (self.lmax + 1) * self.sphere_channels
 

src/fairchem/core/models/escn/so3.py

@@ -280,7 +280,6 @@ def _grid_act(self, SO3_grid, act, mappingReduced) -> None:
             from_grid_mat = SO3_grid[self.lmax_list[i]][
                 self.mmax_list[i]
             ].get_from_grid_mat(self.device)
-
             x_grid = torch.einsum("bai,zic->zbac", to_grid_mat, x_res)
             x_grid = act(x_grid)
             x_res = torch.einsum("bai,zbac->zic", from_grid_mat, x_grid)

src/fairchem/core/models/escn/so3_exportable.py

@@ -250,6 +250,7 @@ def __init__(
         mmax: int,
         normalization: str = "integral",
         resolution: int | None = None,
+        rescale: bool = False,
     ):
         super().__init__()
 
@@ -276,7 +277,7 @@ def __init__(
         )
         to_grid_mat = torch.einsum("mbi, am -> bai", to_grid.shb, to_grid.sha).detach()
         # rescale based on mmax
-        if lmax != mmax:
+        if rescale and lmax != mmax:
             for lval in range(lmax + 1):
                 if lval <= mmax:
                     continue
@@ -300,7 +301,7 @@ def __init__(
             "am, mbi -> bai", from_grid.sha, from_grid.shb
         ).detach()
         # rescale based on mmax
-        if lmax != mmax:
+        if rescale and lmax != mmax:
             for lval in range(lmax + 1):
                 if lval <= mmax:
                     continue

tests/core/models/test_escn_compiles.py

@@ -70,8 +70,8 @@ def load_model(type: str, compile=False, export=False):
             cutoff=CUTOFF,
             max_num_elements=MAX_ELEMENTS,
             num_layers=8,
-            lmax_list=[4],
-            mmax_list=[2],
+            lmax_list=[6],
+            mmax_list=[0],
             sphere_channels=128,
             hidden_channels=256,
             edge_channels=128,
@@ -87,8 +87,8 @@ def load_model(type: str, compile=False, export=False):
             cutoff=CUTOFF,
             max_num_elements=MAX_ELEMENTS,
             num_layers=8,
-            lmax=4,
-            mmax=2,
+            lmax=6,
+            mmax=0,
             sphere_channels=128,
             hidden_channels=256,
             edge_channels=128,