vulkan: only use M-sized matmul on Apple GPUs (#5412)

* vulkan: refactor guess_matmul_pipeline for vendor

Refactor ggml_vk_guess_matmul_pipeline to simplify adding per-vendor
conditionals.

Signed-off-by: Sergio Lopez <slp@redhat.com>

* vulkan: only use M-sized matmul on Apple GPUs

L-sized and S-sized matmuls are broken on Apple GPUs, force using
M-size with this vendor.

Signed-off-by: Sergio Lopez <slp@redhat.com>

---------

Signed-off-by: Sergio Lopez <slp@redhat.com>

ggml-vulkan.cpp

@@ -27,6 +27,7 @@
 #define CEIL_DIV(M, N) (((M) + (N)-1) / (N))
 
 #define VK_VENDOR_ID_AMD 0x1002
+#define VK_VENDOR_ID_APPLE 0x106b
 #define VK_VENDOR_ID_INTEL 0x8086
 #define VK_VENDOR_ID_NVIDIA 0x10de
 
@@ -2034,18 +2035,100 @@ static uint32_t ggml_vk_guess_matmul_pipeline_align(ggml_backend_vk_context * ct
     return ctx->pipeline_matmul_f32_aligned_l.align;
 }
 
+static vk_pipeline* ggml_vk_guess_matmul_pipeline_amd(ggml_backend_vk_context * ctx, bool bit16_x, bool bit16_y, int m, int n, bool aligned) {
+    if (bit16_x && bit16_y) {
+        if (m <= 32 || n <= 32) {
+#ifdef GGML_VULKAN_DEBUG
+    std::cerr << " S" << std::endl;
+#endif
+            return aligned ? &ctx->pipeline_matmul_f16_aligned_s : &ctx->pipeline_matmul_f16_s;
+        }
+#ifdef GGML_VULKAN_DEBUG
+    std::cerr << " M" << std::endl;
+#endif
+        return aligned ? &ctx->pipeline_matmul_f16_aligned_m : &ctx->pipeline_matmul_f16_m;
+    }
+    if (bit16_x && !bit16_y) {
+        if (m <= 32 || n <= 32) {
+#ifdef GGML_VULKAN_DEBUG
+    std::cerr << " S" << std::endl;
+#endif
+            return aligned ? &ctx->pipeline_matmul_f16_f32_aligned_s : &ctx->pipeline_matmul_f16_f32_s;
+        }
+#ifdef GGML_VULKAN_DEBUG
+    std::cerr << " M" << std::endl;
+#endif
+        return aligned ? &ctx->pipeline_matmul_f16_f32_aligned_m : &ctx->pipeline_matmul_f16_f32_m;
+    }
+    if (!bit16_x && bit16_y) {
+        GGML_ASSERT(false);
+    }
+
+    if (m <= 32 || n <= 32) {
+#ifdef GGML_VULKAN_DEBUG
+    std::cerr << " S" << std::endl;
+#endif
+        return aligned ? &ctx->pipeline_matmul_f32_aligned_s : &ctx->pipeline_matmul_f32_s;
+    }
+#ifdef GGML_VULKAN_DEBUG
+    std::cerr << " M" << std::endl;
+#endif
+    return aligned ? &ctx->pipeline_matmul_f32_aligned_m : &ctx->pipeline_matmul_f32_m;
+}
+
+static vk_pipeline* ggml_vk_guess_matmul_pipeline_apple(ggml_backend_vk_context * ctx, bool bit16_x, bool bit16_y, bool aligned) {
+#ifdef GGML_VULKAN_DEBUG
+    std::cerr << " M" << std::endl;
+#endif
+    if (bit16_x && bit16_y) {
+        return aligned ? &ctx->pipeline_matmul_f16_aligned_m : &ctx->pipeline_matmul_f16_m;
+    }
+    if (bit16_x && !bit16_y) {
+        return aligned ? &ctx->pipeline_matmul_f16_f32_aligned_m : &ctx->pipeline_matmul_f16_f32_m;
+    }
+    if (!bit16_x && bit16_y) {
+        GGML_ASSERT(false);
+    }
+    return aligned ? &ctx->pipeline_matmul_f32_aligned_m : &ctx->pipeline_matmul_f32_m;
+}
+
+static vk_pipeline* ggml_vk_guess_matmul_pipeline_intel(ggml_backend_vk_context * ctx, bool bit16_x, bool bit16_y, bool aligned) {
+#ifdef GGML_VULKAN_DEBUG
+    std::cerr << " S" << std::endl;
+#endif
+    if (bit16_x && bit16_y) {
+        return aligned ? &ctx->pipeline_matmul_f16_aligned_s : &ctx->pipeline_matmul_f16_s;
+    }
+    if (bit16_x && !bit16_y) {
+        return aligned ? &ctx->pipeline_matmul_f16_f32_aligned_s : &ctx->pipeline_matmul_f16_f32_s;
+    }
+    if (!bit16_x && bit16_y) {
+        GGML_ASSERT(false);
+    }
+    return aligned ? &ctx->pipeline_matmul_f32_aligned_s : &ctx->pipeline_matmul_f32_s;
+}
+
 static vk_pipeline* ggml_vk_guess_matmul_pipeline(ggml_backend_vk_context * ctx, bool bit16_x, bool bit16_y, int m, int n, bool aligned) {
 #ifdef GGML_VULKAN_DEBUG
     std::cerr << "ggml_vk_guess_matmul_pipeline(" << bit16_x << ", " << bit16_y << ", " << m << ", " << n << ", " << aligned << ")";
 #endif
+    switch (ctx->device.lock()->vendor_id) {
+    case VK_VENDOR_ID_AMD:
+        return ggml_vk_guess_matmul_pipeline_amd(ctx, bit16_x, bit16_y, m, n, aligned);
+    case VK_VENDOR_ID_APPLE:
+        return ggml_vk_guess_matmul_pipeline_apple(ctx, bit16_x, bit16_y, aligned);
+    case VK_VENDOR_ID_INTEL:
+        return ggml_vk_guess_matmul_pipeline_intel(ctx, bit16_x, bit16_y, aligned);
+    }
+
     if (bit16_x && bit16_y) {
-        if (ctx->device.lock()->vendor_id == VK_VENDOR_ID_INTEL || m <= 32 || n <= 32) {
+        if (m <= 32 || n <= 32) {
 #ifdef GGML_VULKAN_DEBUG
     std::cerr << " S" << std::endl;
 #endif
             return aligned ? &ctx->pipeline_matmul_f16_aligned_s : &ctx->pipeline_matmul_f16_s;
         }
-        if (ctx->device.lock()->subgroup_size == 64 || m <= 64 || n <= 64) {
+        if (m <= 64 || n <= 64) {
 #ifdef GGML_VULKAN_DEBUG
     std::cerr << " M" << std::endl;
 #endif
@@ -2057,13 +2140,13 @@ static vk_pipeline* ggml_vk_guess_matmul_pipeline(ggml_backend_vk_context * ctx,
         return aligned ? &ctx->pipeline_matmul_f16_aligned_l : &ctx->pipeline_matmul_f16_l;
     }
     if (bit16_x && !bit16_y) {
-        if (ctx->device.lock()->vendor_id == VK_VENDOR_ID_INTEL || m <= 32 || n <= 32) {
+        if (m <= 32 || n <= 32) {
 #ifdef GGML_VULKAN_DEBUG
     std::cerr << " S" << std::endl;
 #endif
             return aligned ? &ctx->pipeline_matmul_f16_f32_aligned_s : &ctx->pipeline_matmul_f16_f32_s;
         }
-        if (ctx->device.lock()->subgroup_size == 64 || m <= 64 || n <= 64) {
+        if (m <= 64 || n <= 64) {
 #ifdef GGML_VULKAN_DEBUG
     std::cerr << " M" << std::endl;
 #endif
@@ -2078,13 +2161,13 @@ static vk_pipeline* ggml_vk_guess_matmul_pipeline(ggml_backend_vk_context * ctx,
         GGML_ASSERT(false);
     }
 
-    if (ctx->device.lock()->vendor_id == VK_VENDOR_ID_INTEL || m <= 32 || n <= 32) {
+    if (m <= 32 || n <= 32) {
 #ifdef GGML_VULKAN_DEBUG
     std::cerr << " S" << std::endl;
 #endif
         return aligned ? &ctx->pipeline_matmul_f32_aligned_s : &ctx->pipeline_matmul_f32_s;
     }
-    if (ctx->device.lock()->subgroup_size == 64 || m <= 64 || n <= 64) {
+    if (m <= 64 || n <= 64) {
 #ifdef GGML_VULKAN_DEBUG
     std::cerr << " M" << std::endl;
 #endif