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vulkan: delete dead code (#16732)

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ggml_vk_create_buffer_temp is not used anywhere, and it is the only
caller for ggml_vk_pool_malloc.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano
2025-10-25 10:59:54 +02:00
committed by GitHub
parent 8423d01931
commit f90b4a8efe
1 changed files with 0 additions and 78 deletions
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78
ggml/src/ggml-vulkan/ggml-vulkan.cpp
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@@ -96,8 +96,6 @@ static bool is_pow2(uint32_t x) { return x > 1 && (x & (x-1)) == 0; }
#define GGML_VK_MAX_NODES 8192 #define GGML_VK_MAX_NODES 8192
#define MAX_VK_BUFFERS 256
#define VK_CHECK(err, msg) \ #define VK_CHECK(err, msg) \
do { \ do { \
vk::Result err_ = (err); \ vk::Result err_ = (err); \
@@ -1311,7 +1309,6 @@ struct ggml_vk_garbage_collector {
std::vector<vk_semaphore> tl_semaphores; std::vector<vk_semaphore> tl_semaphores;
std::vector<vk_semaphore> semaphores; std::vector<vk_semaphore> semaphores;
std::vector<vk::Event> events; std::vector<vk::Event> events;
std::vector<vk_buffer> temp_buffers;
std::vector<vk_context> contexts; std::vector<vk_context> contexts;
}; };
@@ -1482,8 +1479,6 @@ struct ggml_backend_vk_context {
// and set to true after the buffer contents are consumed. // and set to true after the buffer contents are consumed.
bool prealloc_x_need_sync, prealloc_y_need_sync, prealloc_split_k_need_sync; bool prealloc_x_need_sync, prealloc_y_need_sync, prealloc_split_k_need_sync;
vk_buffer buffer_pool[MAX_VK_BUFFERS];
vk_context_ref compute_ctx; vk_context_ref compute_ctx;
vk_context_ref transfer_ctx; vk_context_ref transfer_ctx;
@@ -5149,71 +5144,6 @@ static vk_pipeline ggml_vk_get_dequantize_mul_mat_vec_id(ggml_backend_vk_context
return ctx->device->pipeline_dequant_mul_mat_vec_id_f32[a_type]; return ctx->device->pipeline_dequant_mul_mat_vec_id_f32[a_type];
} }
static vk_buffer ggml_vk_pool_malloc(ggml_backend_vk_context * ctx, size_t size) {
VK_LOG_DEBUG("ggml_vk_pool_malloc(" << size << ")");
VK_LOG_MEMORY("ggml_vk_pool_malloc");
int best_i = -1;
size_t best_size = std::numeric_limits<size_t>::max(); //smallest unused buffer that fits our needs
int worst_i = -1;
size_t worst_size = 0; //largest unused buffer seen so far
for (int i = 0; i < MAX_VK_BUFFERS; ++i) {
vk_buffer &b = ctx->buffer_pool[i];
if (b != nullptr && b->size >= size && b->size < best_size) {
best_i = i;
best_size = b->size;
}
if (b != nullptr && b->size > worst_size) {
worst_i = i;
worst_size = b->size;
}
}
if(best_i != -1) {
//found the smallest buffer that fits our needs
vk_buffer b = ctx->buffer_pool[best_i];
ctx->buffer_pool[best_i].reset();
return b;
}
if(worst_i != -1) {
//no buffer that fits our needs, resize largest one to save memory
vk_buffer& b = ctx->buffer_pool[worst_i];
ggml_vk_destroy_buffer(b);
}
return ggml_vk_create_buffer_device(ctx->device, size);
}
static void ggml_vk_pool_free(ggml_backend_vk_context * ctx, vk_buffer& buffer) {
VK_LOG_DEBUG("ggml_vk_pool_free(" << buffer->size << ")");
for (int i = 0; i < MAX_VK_BUFFERS; ++i) {
vk_buffer& b = ctx->buffer_pool[i];
if (b == nullptr) {
b = buffer;
return;
}
}
std::cerr << "ggml_vulkan: WARNING: vk buffer pool full, increase MAX_VK_BUFFERS" << std::endl;
ggml_vk_destroy_buffer(buffer);
}
// Returns an available temporary buffer that may only be used temporarily, it will be reused
static vk_buffer ggml_vk_create_buffer_temp(ggml_backend_vk_context * ctx, size_t size) {
// Try to find existing temp buffer with enough capacity
for (auto& buffer : ctx->gc.temp_buffers) {
if (buffer->size >= size) {
return buffer;
}
}
VK_LOG_MEMORY("ggml_vk_create_buffer_temp(" << size << ")");
// Otherwise create new buffer
vk_buffer buf = ggml_vk_pool_malloc(ctx, size);
ctx->gc.temp_buffers.push_back(buf);
return buf;
}
static void * ggml_vk_host_malloc(vk_device& device, size_t size) { static void * ggml_vk_host_malloc(vk_device& device, size_t size) {
VK_LOG_MEMORY("ggml_vk_host_malloc(" << size << ")"); VK_LOG_MEMORY("ggml_vk_host_malloc(" << size << ")");
vk_buffer buf = ggml_vk_create_buffer(device, size, vk_buffer buf = ggml_vk_create_buffer(device, size,
@@ -11794,10 +11724,6 @@ static bool ggml_vk_compute_forward(ggml_backend_vk_context * ctx, ggml_cgraph *
// Clean up after graph processing is done // Clean up after graph processing is done
static void ggml_vk_graph_cleanup(ggml_backend_vk_context * ctx) { static void ggml_vk_graph_cleanup(ggml_backend_vk_context * ctx) {
VK_LOG_DEBUG("ggml_vk_graph_cleanup()"); VK_LOG_DEBUG("ggml_vk_graph_cleanup()");
for (auto& buffer : ctx->gc.temp_buffers) {
ggml_vk_pool_free(ctx, buffer);
}
ctx->gc.temp_buffers.clear();
ctx->prealloc_y_last_pipeline_used = {}; ctx->prealloc_y_last_pipeline_used = {};
ctx->unsynced_nodes_written.clear(); ctx->unsynced_nodes_written.clear();
@@ -11840,10 +11766,6 @@ static void ggml_vk_cleanup(ggml_backend_vk_context * ctx) {
ggml_vk_destroy_buffer(ctx->prealloc_split_k); ggml_vk_destroy_buffer(ctx->prealloc_split_k);
ctx->prealloc_y_last_pipeline_used = nullptr; ctx->prealloc_y_last_pipeline_used = nullptr;
for (auto& buffer : ctx->buffer_pool) {
ggml_vk_destroy_buffer(buffer);
}
ctx->prealloc_size_x = 0; ctx->prealloc_size_x = 0;
ctx->prealloc_size_y = 0; ctx->prealloc_size_y = 0;
ctx->prealloc_size_split_k = 0; ctx->prealloc_size_split_k = 0;