From f174fb29228a04955fb951b32b0bab79e33ec2b8 Mon Sep 17 00:00:00 2001
From: C43H66N12O12S2 <36072735+C43H66N12O12S2@users.noreply.github.com>
Date: Fri, 7 Oct 2022 05:21:49 +0300
Subject: add xformers attention

---
 modules/sd_hijack_optimizations.py | 39 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 38 insertions(+), 1 deletion(-)

(limited to 'modules/sd_hijack_optimizations.py')

diff --git a/modules/sd_hijack_optimizations.py b/modules/sd_hijack_optimizations.py
index ea4cfdfc..da1b76e1 100644
--- a/modules/sd_hijack_optimizations.py
+++ b/modules/sd_hijack_optimizations.py
@@ -1,7 +1,9 @@
 import math
 import torch
 from torch import einsum
-
+import xformers.ops
+import functorch
+xformers._is_functorch_available=True
 from ldm.util import default
 from einops import rearrange
 
@@ -92,6 +94,41 @@ def split_cross_attention_forward(self, x, context=None, mask=None):
 
     return self.to_out(r2)
 
+def _maybe_init(self, x):
+    """
+    Initialize the attention operator, if required We expect the head dimension to be exposed here, meaning that x
+    : B, Head, Length
+    """
+    if self.attention_op is not None:
+        return
+    _, M, K = x.shape
+    try:
+        self.attention_op = xformers.ops.AttentionOpDispatch(
+            dtype=x.dtype,
+            device=x.device,
+            k=K,
+            attn_bias_type=type(None),
+            has_dropout=False,
+            kv_len=M,
+            q_len=M,
+        ).op
+    except NotImplementedError as err:
+        raise NotImplementedError(f"Please install xformers with the flash attention / cutlass components.\n{err}")
+
+def xformers_attention_forward(self, x, context=None, mask=None):
+    h = self.heads
+    q_in = self.to_q(x)
+    context = default(context, x)
+    k_in = self.to_k(context)
+    v_in = self.to_v(context)
+    q, k, v = map(lambda t: rearrange(t, 'b n (h d) -> (b h) n d', h=h), (q_in, k_in, v_in))
+    del q_in, k_in, v_in
+    self._maybe_init(q)
+    out = xformers.ops.memory_efficient_attention(q, k, v, attn_bias=None, op=self.attention_op)
+
+    out = rearrange(out, '(b h) n d -> b n (h d)', h=h)
+    return self.to_out(out)
+
 def cross_attention_attnblock_forward(self, x):
         h_ = x
         h_ = self.norm(h_)
-- 
cgit v1.2.3


From c9cc65b201679ea43c763b0d85e749d40bbc5433 Mon Sep 17 00:00:00 2001
From: C43H66N12O12S2 <36072735+C43H66N12O12S2@users.noreply.github.com>
Date: Sat, 8 Oct 2022 04:09:18 +0300
Subject: switch to the proper way of calling xformers

---
 modules/sd_hijack_optimizations.py | 28 +++-------------------------
 1 file changed, 3 insertions(+), 25 deletions(-)

(limited to 'modules/sd_hijack_optimizations.py')

diff --git a/modules/sd_hijack_optimizations.py b/modules/sd_hijack_optimizations.py
index da1b76e1..7fb4a45e 100644
--- a/modules/sd_hijack_optimizations.py
+++ b/modules/sd_hijack_optimizations.py
@@ -94,39 +94,17 @@ def split_cross_attention_forward(self, x, context=None, mask=None):
 
     return self.to_out(r2)
 
-def _maybe_init(self, x):
-    """
-    Initialize the attention operator, if required We expect the head dimension to be exposed here, meaning that x
-    : B, Head, Length
-    """
-    if self.attention_op is not None:
-        return
-    _, M, K = x.shape
-    try:
-        self.attention_op = xformers.ops.AttentionOpDispatch(
-            dtype=x.dtype,
-            device=x.device,
-            k=K,
-            attn_bias_type=type(None),
-            has_dropout=False,
-            kv_len=M,
-            q_len=M,
-        ).op
-    except NotImplementedError as err:
-        raise NotImplementedError(f"Please install xformers with the flash attention / cutlass components.\n{err}")
-
 def xformers_attention_forward(self, x, context=None, mask=None):
     h = self.heads
     q_in = self.to_q(x)
     context = default(context, x)
     k_in = self.to_k(context)
     v_in = self.to_v(context)
-    q, k, v = map(lambda t: rearrange(t, 'b n (h d) -> (b h) n d', h=h), (q_in, k_in, v_in))
+    q, k, v = map(lambda t: rearrange(t, 'b n (h d) -> b n h d', h=h), (q_in, k_in, v_in))
     del q_in, k_in, v_in
-    self._maybe_init(q)
-    out = xformers.ops.memory_efficient_attention(q, k, v, attn_bias=None, op=self.attention_op)
+    out = xformers.ops.memory_efficient_attention(q, k, v, attn_bias=None)
 
-    out = rearrange(out, '(b h) n d -> b n (h d)', h=h)
+    out = rearrange(out, 'b n h d -> b n (h d)', h=h)
     return self.to_out(out)
 
 def cross_attention_attnblock_forward(self, x):
-- 
cgit v1.2.3


From f2055cb1d4ce45d7aaacc49d8ab5bec7791a8f47 Mon Sep 17 00:00:00 2001
From: brkirch <brkirch@users.noreply.github.com>
Date: Sat, 8 Oct 2022 01:47:02 -0400
Subject: Add hypernetwork support to split cross attention v1

* Add hypernetwork support to split_cross_attention_forward_v1
* Fix device check in esrgan_model.py to use devices.device_esrgan instead of shared.device
---
 modules/sd_hijack_optimizations.py | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

(limited to 'modules/sd_hijack_optimizations.py')

diff --git a/modules/sd_hijack_optimizations.py b/modules/sd_hijack_optimizations.py
index d9cca485..3351c740 100644
--- a/modules/sd_hijack_optimizations.py
+++ b/modules/sd_hijack_optimizations.py
@@ -12,13 +12,22 @@ from modules import shared
 def split_cross_attention_forward_v1(self, x, context=None, mask=None):
     h = self.heads
 
-    q = self.to_q(x)
+    q_in = self.to_q(x)
     context = default(context, x)
-    k = self.to_k(context)
-    v = self.to_v(context)
+
+    hypernetwork = shared.selected_hypernetwork()
+    hypernetwork_layers = (hypernetwork.layers if hypernetwork is not None else {}).get(context.shape[2], None)
+
+    if hypernetwork_layers is not None:
+        k_in = self.to_k(hypernetwork_layers[0](context))
+        v_in = self.to_v(hypernetwork_layers[1](context))
+    else:
+        k_in = self.to_k(context)
+        v_in = self.to_v(context)
     del context, x
 
-    q, k, v = map(lambda t: rearrange(t, 'b n (h d) -> (b h) n d', h=h), (q, k, v))
+    q, k, v = map(lambda t: rearrange(t, 'b n (h d) -> (b h) n d', h=h), (q_in, k_in, v_in))
+    del q_in, k_in, v_in
 
     r1 = torch.zeros(q.shape[0], q.shape[1], v.shape[2], device=q.device)
     for i in range(0, q.shape[0], 2):
@@ -31,6 +40,7 @@ def split_cross_attention_forward_v1(self, x, context=None, mask=None):
 
         r1[i:end] = einsum('b i j, b j d -> b i d', s2, v[i:end])
         del s2
+    del q, k, v
 
     r2 = rearrange(r1, '(b h) n d -> b n (h d)', h=h)
     del r1
-- 
cgit v1.2.3


From 5d54f35c583bd5a3b0ee271a862827f1ca81ef09 Mon Sep 17 00:00:00 2001
From: C43H66N12O12S2 <36072735+C43H66N12O12S2@users.noreply.github.com>
Date: Sat, 8 Oct 2022 11:55:02 +0300
Subject: add xformers attnblock and hypernetwork support

---
 modules/sd_hijack_optimizations.py | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

(limited to 'modules/sd_hijack_optimizations.py')

diff --git a/modules/sd_hijack_optimizations.py b/modules/sd_hijack_optimizations.py
index 7fb4a45e..c78d5838 100644
--- a/modules/sd_hijack_optimizations.py
+++ b/modules/sd_hijack_optimizations.py
@@ -98,8 +98,14 @@ def xformers_attention_forward(self, x, context=None, mask=None):
     h = self.heads
     q_in = self.to_q(x)
     context = default(context, x)
-    k_in = self.to_k(context)
-    v_in = self.to_v(context)
+    hypernetwork = shared.selected_hypernetwork()
+    hypernetwork_layers = (hypernetwork.layers if hypernetwork is not None else {}).get(context.shape[2], None)
+    if hypernetwork_layers is not None:
+        k_in = self.to_k(hypernetwork_layers[0](context))
+        v_in = self.to_v(hypernetwork_layers[1](context))
+    else:
+        k_in = self.to_k(context)
+        v_in = self.to_v(context)
     q, k, v = map(lambda t: rearrange(t, 'b n (h d) -> b n h d', h=h), (q_in, k_in, v_in))
     del q_in, k_in, v_in
     out = xformers.ops.memory_efficient_attention(q, k, v, attn_bias=None)
@@ -169,3 +175,13 @@ def cross_attention_attnblock_forward(self, x):
         h3 += x
 
         return h3
+    
+    def xformers_attnblock_forward(self, x):
+        h_ = x
+        h_ = self.norm(h_)
+        q1 = self.q(h_).contiguous()
+        k1 = self.k(h_).contiguous()
+        v = self.v(h_).contiguous()
+        out = xformers.ops.memory_efficient_attention(q1, k1, v)
+        out = self.proj_out(out)
+        return x+out
-- 
cgit v1.2.3


From 76a616fa6b814c681eaf6edc87eb3001b8c2b6be Mon Sep 17 00:00:00 2001
From: C43H66N12O12S2 <36072735+C43H66N12O12S2@users.noreply.github.com>
Date: Sat, 8 Oct 2022 11:55:38 +0300
Subject: Update sd_hijack_optimizations.py

---
 modules/sd_hijack_optimizations.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'modules/sd_hijack_optimizations.py')

diff --git a/modules/sd_hijack_optimizations.py b/modules/sd_hijack_optimizations.py
index c78d5838..ee58c7e4 100644
--- a/modules/sd_hijack_optimizations.py
+++ b/modules/sd_hijack_optimizations.py
@@ -176,7 +176,7 @@ def cross_attention_attnblock_forward(self, x):
 
         return h3
     
-    def xformers_attnblock_forward(self, x):
+def xformers_attnblock_forward(self, x):
         h_ = x
         h_ = self.norm(h_)
         q1 = self.q(h_).contiguous()
-- 
cgit v1.2.3


From 69d0053583757ce2942d62de81e8b89e6be07840 Mon Sep 17 00:00:00 2001
From: C43H66N12O12S2 <36072735+C43H66N12O12S2@users.noreply.github.com>
Date: Sat, 8 Oct 2022 16:21:40 +0300
Subject: update sd_hijack_opt to respect new env variables

---
 modules/sd_hijack_optimizations.py | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

(limited to 'modules/sd_hijack_optimizations.py')

diff --git a/modules/sd_hijack_optimizations.py b/modules/sd_hijack_optimizations.py
index ee58c7e4..be09ec8f 100644
--- a/modules/sd_hijack_optimizations.py
+++ b/modules/sd_hijack_optimizations.py
@@ -1,9 +1,14 @@
 import math
 import torch
 from torch import einsum
-import xformers.ops
-import functorch
-xformers._is_functorch_available=True
+try:
+    import xformers.ops
+    import functorch
+    xformers._is_functorch_available = True
+    shared.xformers_available = True
+except:
+    print('Cannot find xformers, defaulting to split attention. Try setting --xformers in your webui-user file if you wish to install it.')
+    continue
 from ldm.util import default
 from einops import rearrange
 
-- 
cgit v1.2.3


From 7ff1170a2e11b6f00f587407326db0b9f8f51adf Mon Sep 17 00:00:00 2001
From: AUTOMATIC <16777216c@gmail.com>
Date: Sat, 8 Oct 2022 16:33:39 +0300
Subject: emergency fix for xformers (continue + shared)

---
 modules/sd_hijack_optimizations.py | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

(limited to 'modules/sd_hijack_optimizations.py')

diff --git a/modules/sd_hijack_optimizations.py b/modules/sd_hijack_optimizations.py
index e43e2c7a..05023b6f 100644
--- a/modules/sd_hijack_optimizations.py
+++ b/modules/sd_hijack_optimizations.py
@@ -1,19 +1,19 @@
 import math
 import torch
 from torch import einsum
-try:
-    import xformers.ops
-    import functorch
-    xformers._is_functorch_available = True
-    shared.xformers_available = True
-except:
-    print('Cannot find xformers, defaulting to split attention. Try setting --xformers in your webui-user file if you wish to install it.')
-    continue
+
 from ldm.util import default
 from einops import rearrange
 
 from modules import shared
 
+try:
+    import xformers.ops
+    import functorch
+    xformers._is_functorch_available = True
+    shared.xformers_available = True
+except Exception:
+    print('Cannot find xformers, defaulting to split attention. Try adding --xformers commandline argument to your webui-user file if you wish to install it.')
 
 # see https://github.com/basujindal/stable-diffusion/pull/117 for discussion
 def split_cross_attention_forward_v1(self, x, context=None, mask=None):
-- 
cgit v1.2.3


From dc1117233ef8f9b25ff1ac40b158f20b70ba2fcb Mon Sep 17 00:00:00 2001
From: AUTOMATIC <16777216c@gmail.com>
Date: Sat, 8 Oct 2022 17:02:18 +0300
Subject: simplify xfrmers options: --xformers to enable and that's it

---
 modules/sd_hijack_optimizations.py | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

(limited to 'modules/sd_hijack_optimizations.py')

diff --git a/modules/sd_hijack_optimizations.py b/modules/sd_hijack_optimizations.py
index 05023b6f..d23d733b 100644
--- a/modules/sd_hijack_optimizations.py
+++ b/modules/sd_hijack_optimizations.py
@@ -1,4 +1,7 @@
 import math
+import sys
+import traceback
+
 import torch
 from torch import einsum
 
@@ -7,13 +10,16 @@ from einops import rearrange
 
 from modules import shared
 
-try:
-    import xformers.ops
-    import functorch
-    xformers._is_functorch_available = True
-    shared.xformers_available = True
-except Exception:
-    print('Cannot find xformers, defaulting to split attention. Try adding --xformers commandline argument to your webui-user file if you wish to install it.')
+if shared.cmd_opts.xformers:
+    try:
+        import xformers.ops
+        import functorch
+        xformers._is_functorch_available = True
+        shared.xformers_available = True
+    except Exception:
+        print("Cannot import xformers", file=sys.stderr)
+        print(traceback.format_exc(), file=sys.stderr)
+
 
 # see https://github.com/basujindal/stable-diffusion/pull/117 for discussion
 def split_cross_attention_forward_v1(self, x, context=None, mask=None):
-- 
cgit v1.2.3