From: ccbinn <redacted>
Date: Sun, 25 Jan 2026 18:07:19 +0000 (+0800)
Subject: metal : fix recommendedMaxWorkingSetSize availability on legacy iOS/macOS (#19088)
X-Git-Tag: upstream/0.0.8067~232
X-Git-Url: https://git.djapps.eu/?a=commitdiff_plain;h=0440bfd1605333726ea0fb7a836942660bf2f9a6;p=pkg%2Fggml%2Fsources%2Fllama.cpp

metal : fix recommendedMaxWorkingSetSize availability on legacy iOS/macOS (#19088)

Co-authored-by: chenbin11 <redacted>
---

diff --git a/ggml/src/ggml-metal/ggml-metal-device.m b/ggml/src/ggml-metal/ggml-metal-device.m
index eb4e2c209..7f9c384c3 100644
--- a/ggml/src/ggml-metal/ggml-metal-device.m
+++ b/ggml/src/ggml-metal/ggml-metal-device.m
@@ -785,8 +785,12 @@ ggml_metal_device_t ggml_metal_device_init(void) {
             dev->props.op_offload_min_batch_size  = getenv("GGML_OP_OFFLOAD_MIN_BATCH") ? atoi(getenv("GGML_OP_OFFLOAD_MIN_BATCH")) : 32;
 
             dev->props.max_buffer_size            = dev->mtl_device.maxBufferLength;
-            dev->props.max_working_set_size       = dev->mtl_device.recommendedMaxWorkingSetSize;
             dev->props.max_theadgroup_memory_size = dev->mtl_device.maxThreadgroupMemoryLength;
+            if (@available(macOS 10.12, iOS 16.0, *)) {
+                dev->props.max_working_set_size   = dev->mtl_device.recommendedMaxWorkingSetSize;
+            } else {
+                dev->props.max_working_set_size   = dev->mtl_device.maxBufferLength;
+            }
 
             strncpy(dev->props.name, [[dev->mtl_device name] UTF8String], sizeof(dev->props.name) - 1);