From d40e44ade479f7bba30d5317381cbc58c861775b Mon Sep 17 00:00:00 2001
From: Deciare <1689220+deciare@users.noreply.github.com>
Date: Tue, 18 Apr 2023 23:18:58 -0400
Subject: Option to use CPU for random number generation.

Makes a given manual seed generate the same images across different
platforms, independently of the GPU architecture in use.

Fixes #9613.
---
 modules/devices.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'modules/devices.py')

diff --git a/modules/devices.py b/modules/devices.py
index 52c3e7cd..3bc86a6a 100644
--- a/modules/devices.py
+++ b/modules/devices.py
@@ -92,14 +92,18 @@ def cond_cast_float(input):
 
 
 def randn(seed, shape):
+    from modules.shared import opts
+
     torch.manual_seed(seed)
-    if device.type == 'mps':
+    if opts.use_cpu_randn or device.type == 'mps':
         return torch.randn(shape, device=cpu).to(device)
     return torch.randn(shape, device=device)
 
 
 def randn_without_seed(shape):
-    if device.type == 'mps':
+    from modules.shared import opts
+
+    if opts.use_cpu_randn or device.type == 'mps':
         return torch.randn(shape, device=cpu).to(device)
     return torch.randn(shape, device=device)
 
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