Merge pull request #222 from beiwang2003/main

FP16 fixes 

openfold/model/heads.py

@@ -137,7 +137,7 @@ class DistogramHead(nn.Module):
 
         self.linear = Linear(self.c_z, self.no_bins, init="final")
 
-    def forward(self, z):  # [*, N, N, C_z]
+    def _forward(self, z):  # [*, N, N, C_z]
         """
         Args:
             z:
@@ -150,6 +150,14 @@ class DistogramHead(nn.Module):
         logits = logits + logits.transpose(-2, -3)
         return logits
     
+    def forward(self, z):
+        
+        float16_enabled = (torch.get_autocast_gpu_dtype() == torch.float16)
+        if float16_enabled and torch.is_autocast_enabled():
+            with torch.cuda.amp.autocast(enabled=False):
+                return self._forward(z.float())
+        else:
+            return self._forward(z)
         
 class TMScoreHead(nn.Module):
     """

openfold/model/outer_product_mean.py

@@ -93,7 +93,7 @@ class OuterProductMean(nn.Module):
 
         return outer
 
-    def forward(self, 
+    def _forward(self, 
         m: torch.Tensor, 
         mask: Optional[torch.Tensor] = None,
         chunk_size: Optional[int] = None,
@@ -143,3 +143,18 @@ class OuterProductMean(nn.Module):
             outer = outer / norm
 
         return outer
+
+    def forward(self,
+                m: torch.Tensor,
+                mask: Optional[torch.Tensor] = None,
+                chunk_size: Optional[int] = None,
+                inplace_safe: bool = False,
+    ) -> torch.Tensor:
+
+        float16_enabled = (torch.get_autocast_gpu_dtype() == torch.float16)
+        if float16_enabled and torch.is_autocast_enabled():
+            with torch.cuda.amp.autocast(enabled=False):
+                return self._forward(m.float(), mask, chunk_size, inplace_safe)
+        else:
+            return self._forward(m, mask, chunk_size, inplace_safe)
+        

openfold/model/primitives.py

@@ -479,6 +479,9 @@ class Attention(nn.Module):
         q, k, v = self._prep_qkv(q_x, kv_x)
 
         # [*, Q, H, C_hidden]
+        float16_enabled = (torch.get_autocast_gpu_dtype() == torch.float16)
+        if float16_enabled:
+            use_memory_efficient_kernel = False
         if(use_memory_efficient_kernel):
             if(len(biases) > 2):
                 raise ValueError(

openfold/model/structure_module.py

@@ -312,6 +312,14 @@ class InvariantPointAttention(nn.Module):
             z[0] = z[0].cpu()
 
         # [*, H, N_res, N_res]
+        float16_enabled = (torch.get_autocast_gpu_dtype() == torch.float16)
+        if float16_enabled and torch.is_autocast_enabled():
+            with torch.cuda.amp.autocast(enabled=False):
+                a = torch.matmul(
+                    permute_final_dims(q.float(), (1, 0, 2)),  # [*, H, N_res, C_hidden]
+                    permute_final_dims(k.float(), (1, 2, 0)),  # [*, H, C_hidden, N_res]
+                )
+        else:
             a = torch.matmul(
                 permute_final_dims(q, (1, 0, 2)),  # [*, H, N_res, C_hidden]
                 permute_final_dims(k, (1, 2, 0)),  # [*, H, C_hidden, N_res]

openfold/model/triangular_multiplicative_update.py

@@ -391,6 +391,11 @@ class TriangleMultiplicativeUpdate(nn.Module):
         b = mask
         b = b * self.sigmoid(self.linear_b_g(z))
         b = b * self.linear_b_p(z)
+        float16_enabled = (torch.get_autocast_gpu_dtype() == torch.float16)
+        if float16_enabled and torch.is_autocast_enabled():
+            with torch.cuda.amp.autocast(enabled=False):
+                x = self._combine_projections(a.float(), b.float())
+        else:
             x = self._combine_projections(a, b)
         del a, b
         x = self.layer_norm_out(x)