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device_compute_delay: compatible with the shared memory in Metal
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Lizonghang
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e74967c488
commit
3c8dbd11fc
1 changed files with 64 additions and 37 deletions
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@ -31,6 +31,7 @@
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#include <cuda_runtime.h>
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#endif
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#include <algorithm>
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#include <cmath>
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#include <chrono>
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#include <fstream>
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@ -1061,7 +1062,8 @@ void device_get_props(struct llama_model * model, int device, struct ggml_backen
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static float device_compute_delay(struct device_info & dev_info, int n_layers, const struct llama_context_params cparams) {
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struct model_flops n_flops = dev_info.model_flops;
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struct cpu_props cpu = dev_info.cpu_props;
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const int n_gpu_layers = cparams.n_gpu_layers;
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int n_gpu_layers = std::min(static_cast<int>(cparams.n_gpu_layers), n_layers);
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double gpu_latency_per_layer = 0.0f;
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double cpu_latency_per_layer = 0.0f;
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@ -1116,7 +1118,7 @@ static float device_compute_delay(struct device_info & dev_info, int n_layers, c
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// estimate the memory access delay, except for the input embedding because it has been considered in n_flops.inp_embd_ms
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static float device_memory_access_delay(struct device_info & dev_info, const struct llama_context_params cparams, int n_layers) {
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struct model_params n_params = dev_info.model_params;
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int n_gpu_layers = cparams.n_gpu_layers;
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int n_gpu_layers = std::min(static_cast<int>(cparams.n_gpu_layers), n_layers);
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int64_t layer_bytes =
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n_params.layer_f32 * 4 +
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@ -1156,7 +1158,37 @@ static float device_memory_access_delay(struct device_info & dev_info, const str
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static float device_disk_access_delay(struct device_info & dev_info, struct llama_model * model, const struct llama_context_params cparams) {
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auto n_params = dev_info.model_params;
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int n_layers = llama_model_n_layers(model);
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int n_gpu_layers = cparams.n_gpu_layers;
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int n_gpu_layers = std::min(static_cast<int>(cparams.n_gpu_layers), n_layers);
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int n_vocab = llama_n_vocab(model);
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int64_t cpu_total_bytes = (
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n_params.input_f32 * 4 +
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n_params.input_f16 * 2 +
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n_params.input_q4k / 2 +
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n_params.input_q6k * 3 / 8 +
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n_params.input_q80) / n_vocab; // lookup table, retrieve only n_embd elements
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int64_t layer_bytes =
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n_params.layer_f32 * 4 +
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n_params.layer_f16 * 2 +
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n_params.layer_q4k / 2 +
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n_params.layer_q6k * 3 / 8 +
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n_params.layer_q80;
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#if defined(GGML_USE_METAL) || defined(GGML_USE_CUDA)
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cpu_total_bytes += layer_bytes * (n_layers - n_gpu_layers);
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int64_t gpu_total_bytes = layer_bytes * n_gpu_layers;
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#else
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(void)n_gpu_layers;
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cpu_total_bytes += layer_bytes * n_layers;
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#endif
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cpu_total_bytes += (
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n_params.output_f32 * 4 +
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n_params.output_f16 * 2 +
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n_params.output_q4k / 2 +
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n_params.output_q6k * 3 / 8 +
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n_params.output_q80);
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uint64_t cpu_kv_size;
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uint64_t gpu_kv_size;
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@ -1171,43 +1203,38 @@ static float device_disk_access_delay(struct device_info & dev_info, struct llam
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llama_model_compute_buf_size(&cpu_compute_buf, &gpu_compute_buf, model, cparams, false);
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#endif
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double cpu_kv_size_gb = static_cast<double>(cpu_kv_size) / 1e9; // convert to GB
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double cpu_compute_buf_gb = static_cast<double>(cpu_compute_buf) / 1e9; // convert to GB
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double cpu_kv_size_gib = static_cast<double>(cpu_kv_size) / 1024.0 / 1024.0 / 1024.0; // convert to GiB
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double gpu_kv_size_gib = static_cast<double>(gpu_kv_size) / 1024.0 / 1024.0 / 1024.0; // convert to GiB
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double cpu_compute_buf_gib = static_cast<double>(cpu_compute_buf) / 1024.0 / 1024.0 / 1024.0; // convert to GiB
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double gpu_compute_buf_gib = static_cast<double>(gpu_compute_buf) / 1024.0 / 1024.0 / 1024.0; // convert to GiB
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int64_t cpu_total_bytes =
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n_params.layer_f32 * 4 +
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n_params.layer_f16 * 2 +
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n_params.layer_q4k / 2 +
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n_params.layer_q6k * 3 / 8 +
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n_params.layer_q80;
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#if defined(GGML_USE_METAL) || defined(GGML_USE_CUDA)
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cpu_total_bytes *= (n_layers - n_gpu_layers);
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#else
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(void)n_gpu_layers;
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cpu_total_bytes *= n_layers;
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#if defined(GGML_USE_METAL)
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if (n_gpu_layers > 0) {
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double total_bytes_gib = static_cast<double>(cpu_total_bytes + gpu_total_bytes) / 1024.0 / 1024.0 / 1024.0;
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double total_kv_size_gib = cpu_kv_size_gib + gpu_kv_size_gib;
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double total_compute_buf_gib = cpu_compute_buf_gib + gpu_compute_buf_gib;
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if (total_bytes_gib + total_kv_size_gib + total_compute_buf_gib < dev_info.memory.total_physical) {
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return 0.0f;
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} else {
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LOG_INF("swap occurs, not allowed\n");
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// double need_swap_gib = total_bytes_gib + total_kv_size_gib + total_compute_buf_gib - dev_info.memory.total_physical;
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// float disk_read_bw = dev_info.disk.read_rnd_bw; // GB/s, todo: write and read speed
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// return need_swap_gib / disk_read_bw * 2 * 1000; // convert to ms
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return 1e9;
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}
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}
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#endif
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cpu_total_bytes += (
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n_params.output_f32 * 4 +
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n_params.output_f16 * 2 +
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n_params.output_q4k / 2 +
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n_params.output_q6k * 3 / 8 +
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n_params.output_q80);
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(void)gpu_kv_size_gib;
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(void)gpu_compute_buf_gib;
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float cpu_total_gbytes = (double)cpu_total_bytes / 1e9; // convert to GB
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float cpu_mem_avail = dev_info.memory.available_physical * 1024.0f * 1024.0f * 1024.0f / 1e9; // convert to GB
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cpu_mem_avail -= static_cast<float>(cpu_kv_size_gb);
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cpu_mem_avail -= static_cast<float>(cpu_compute_buf_gb);
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float cpu_total_bytes_gib = (double)cpu_total_bytes / 1024.0 / 1024.0 / 1024.0; // convert to GiB
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float cpu_mem_avail = dev_info.memory.available_physical; // GiB
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cpu_mem_avail -= static_cast<float>(cpu_kv_size_gib);
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cpu_mem_avail -= static_cast<float>(cpu_compute_buf_gib);
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// #ifdef __linux__
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// float disk_read_bw = dev_info.disk.read_seq_bw; // GB/s
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// #else
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// float disk_read_bw = dev_info.disk.read_rnd_bw; // GB/s
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// #endif
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float disk_read_bw = dev_info.disk.read_rnd_bw; // GB/s
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return std::max(0.0, static_cast<double>(cpu_total_gbytes - cpu_mem_avail) / disk_read_bw * 1000); // convert to ms
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float disk_read_bw = dev_info.disk.read_rnd_bw * 1e9 / 1024.0 / 1024.0 / 1024.0; // convert GB/s to GiB/s
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return std::max(0.0, static_cast<double>(cpu_total_bytes_gib - cpu_mem_avail) / disk_read_bw * 1000); // convert to ms
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}
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void device_print_props(struct device_info * dev_info_set, int n, struct llama_model * model, const struct llama_context_params cparams) {
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@ -1570,7 +1597,7 @@ void device_print_props(struct device_info * dev_info_set, int n, struct llama_m
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int n_layers = llama_model_n_layers (model);
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latency += device_compute_delay (dev_info_set[0], n_layers, cparams);
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latency += device_memory_access_delay(dev_info_set[0], cparams, n_layers);
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latency += device_disk_access_delay (dev_info_set[0], model, cparams); // if physical memory is not enough, some tensor weights will be released from memory and reloaded by mmap later
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latency += device_disk_access_delay (dev_info_set[0], model, cparams); // if physical memory is not enough, some mapped data will be released and reloaded later
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LOG_INF("| Token latency (ms) ");
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LOG_INF("| %-10.2f ", latency);
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