Fix platform evaluation on macos CI

.github/workflows/ci.yml

@@ -22,7 +22,12 @@ permissions:
 
 jobs:
   test:
-    runs-on: github-gpu
+    strategy:
+      matrix:
+        include:
+          - machine: github-gpu
+          - machine: macos-latest-xlarge
+    runs-on: ${{ matrix.machine }}
     steps:
       - uses: actions/checkout@v4
 

scripts/debug_mac_gpu.swift

@@ -0,0 +1,11 @@
+import Metal
+guard let device = MTLCreateSystemDefaultDevice() else {
+  print("Error: Could not find Metal device.")
+  exit(1)
+}
+print("Name: \(device.name)")
+print("Is Headless: \(device.isHeadless)")
+print("Supports Raytracing: \(device.supportsRaytracing)")
+print("Supports Dynamic Libraries: \(device.supportsDynamicLibraries)")
+print("Max Buffer (GB): \(String(format: "%.2f", Double(device.maxBufferLength) / 1.0e9))")
+print("Recommended Max VRAM (GB): \(String(format: "%.2f", Double(device.recommendedMaxWorkingSetSize) / 1.0e9))")

solutions/run.sh

@@ -57,12 +57,12 @@ detect_gpu_platform() {
     fi
 
     # Check for Apple Silicon (macOS)
-    if [[ "$OSTYPE" == "darwin"* ]]; then
-        if system_profiler SPDisplaysDataType 2>/dev/null | grep -q "Apple"; then
+    if [[ "$(uname -s)" == "Darwin" ]]; then
+        if [[ "$(uname -m)" == "arm64" ]]; then
             echo "apple"
             return
         fi
-    fi
+    fi    
 
     echo "unknown"
 }
@@ -534,6 +534,19 @@ print_startup_banner() {
     local compute_cap=$(detect_gpu_compute_capability)
     local gpu_name=""
 
+    # TEMPORARY Debugging MacOS CI issue
+    local mac_displays_info=$(system_profiler SPDisplaysDataType)
+    local mac_hardware_info=$(system_profiler SPHardwareDataType)
+    local mac_swift_debug=$(swift ../scripts/debug_mac_gpu.swift)
+    echo -e "Debug info about Mac displays:"
+    echo -e "$mac_displays_info"
+    echo -e "Debug info about Mac hardware:"
+    echo -e "$mac_hardware_info"
+    echo -e "Debug info from Swift:"
+    echo -e "$mac_swift_debug"
+
+    # End
+
     echo -e "${BOLD}GPU Information:${NC}"
     echo -e "  ${BULLET} Platform: ${CYAN}$(echo "$gpu_platform" | tr '[:lower:]' '[:upper:]')${NC}"