From fe33807d28ba6c0f68dc308de770399bcef7d919 Mon Sep 17 00:00:00 2001
From: Christopher Rackauckas <accounts@chrisrackauckas.com>
Date: Sun, 28 Jul 2024 16:02:38 -0400
Subject: [PATCH] Don't default to MKL on EPYC

---
 Project.toml       | 1 +
 src/LinearSolve.jl | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Project.toml b/Project.toml
index 6fcabb6a..66af337d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -7,6 +7,7 @@ version = "2.30.2"
 ArrayInterface = "4fba245c-0d91-5ea0-9b3e-6abc04ee57a9"
 ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"
 ConcreteStructs = "2569d6c7-a4a2-43d3-a901-331e8e4be471"
+CpuId = "adafc99b-e345-5852-983c-f28acb93d879"
 DocStringExtensions = "ffbed154-4ef7-542d-bbb7-c09d3a79fcae"
 EnumX = "4e289a0a-7415-4d19-859d-a7e5c4648b56"
 FastLapackInterface = "29a986be-02c6-4525-aec4-84b980013641"
diff --git a/src/LinearSolve.jl b/src/LinearSolve.jl
index 894c6e0d..053eb8c1 100644
--- a/src/LinearSolve.jl
+++ b/src/LinearSolve.jl
@@ -44,7 +44,7 @@ import PrecompileTools
 
 const CRC = ChainRulesCore
 
-if Preferences.@load_preference("LoadMKL_JLL", true)
+if Preferences.@load_preference("LoadMKL_JLL", !occursin("EPYC", cpubrand()))
     using MKL_jll
     const usemkl = MKL_jll.is_available()
 else