From 7cb1e4de484944c717d0aacc269519bda0032138 Mon Sep 17 00:00:00 2001
From: ChrisRackauckas-Claude <accounts@chrisrackauckas.com>
Date: Thu, 19 Mar 2026 08:46:25 -0400
Subject: [PATCH] Fix V100 CUDA compatibility for demeter4 runners

Add LocalPreferences.toml to pin CUDA runtime 12.6 and disable
forward-compat driver. V100 GPUs (compute capability 7.0) require
system driver since CUDA_Driver_jll v13+ drops cc7.0 support.

Ref: ChrisRackauckas/InternalJunk#19
---
 docs/LocalPreferences.toml | 7 +++++++
 docs/Project.toml          | 2 ++
 test/LocalPreferences.toml | 7 +++++++
 test/Project.toml          | 2 ++
 4 files changed, 18 insertions(+)
 create mode 100644 docs/LocalPreferences.toml
 create mode 100644 test/LocalPreferences.toml

diff --git a/docs/LocalPreferences.toml b/docs/LocalPreferences.toml
new file mode 100644
index 0000000..b65c691
--- /dev/null
+++ b/docs/LocalPreferences.toml
@@ -0,0 +1,7 @@
+[CUDA_Runtime_jll]
+version = "12.6"
+
+[CUDA_Driver_jll]
+# Disable forward-compat driver — V100 runners need the system driver
+# since CUDA_Driver_jll v13+ drops compute capability 7.0 support
+compat = "false"
diff --git a/docs/Project.toml b/docs/Project.toml
index 95690e0..46e2e54 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -3,6 +3,8 @@ AlgebraOfGraphics = "cbdf2221-f076-402e-a563-3d30da359d67"
 CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
 CairoMakie = "13f3f980-e62b-5c42-98c6-ff1f3baf88f0"
 CondaPkg = "992eb4ea-22a4-4c89-a5bb-47a3300528ab"
+CUDA_Driver_jll = "4ee394cb-3365-5eb0-8335-949819d2adfc"
+CUDA_Runtime_jll = "76a88914-d11a-5bdc-97e0-2f5a05c973a2"
 DataDeps = "124859b0-ceae-595e-8997-d05f6a7a8dfe"
 DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
diff --git a/test/LocalPreferences.toml b/test/LocalPreferences.toml
new file mode 100644
index 0000000..b65c691
--- /dev/null
+++ b/test/LocalPreferences.toml
@@ -0,0 +1,7 @@
+[CUDA_Runtime_jll]
+version = "12.6"
+
+[CUDA_Driver_jll]
+# Disable forward-compat driver — V100 runners need the system driver
+# since CUDA_Driver_jll v13+ drops compute capability 7.0 support
+compat = "false"
diff --git a/test/Project.toml b/test/Project.toml
index 5f960fa..eae4d3d 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -1,6 +1,8 @@
 [deps]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 ComponentArrays = "b0b7db55-cfe3-40fc-9ded-d10e2dbeff66"
+CUDA_Driver_jll = "4ee394cb-3365-5eb0-8335-949819d2adfc"
+CUDA_Runtime_jll = "76a88914-d11a-5bdc-97e0-2f5a05c973a2"
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 Enzyme = "7da242da-08ed-463a-9acd-ee780be4f1d9"
 ExplicitImports = "7d51a73a-1435-4ff3-83d9-f097790105c7"