c111b3a9b0
Phase 01 (LLM Tuning): - Gemma4 26B: 74.65 t/s (fast) - Qwen 35B: 61.62 t/s (balanced) - Gemma4 31B: 16.0 t/s (deep-coder) - Qwen 27B: 16.7 t/s (deep-logic) - Qwen 122B: 8.95 t/s (ultra, GPU 1 only) Phase 02 (API Engine): - FastAPI reverse proxy on port 8000 - /engine/switch hot-swap with 503 protection - config/engine_models.json as single source of truth - Replaced 4 individual .bat files with unified engine File cleanup: - scripts/ 85 files -> 9 + _archive/ - Root .bat files -> _archive/
340 lines
9.4 KiB
Python
340 lines
9.4 KiB
Python
"""
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Gemma4 26B-A4B Comprehensive Auto-Tuner | 256K Context | RTX 3060 12GB
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Phase 1: -ngl sweep (GPU layers)
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Phase 2: -t / -tb sweep (CPU threads)
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Phase 3: -ub / -b sweep (batch sizes)
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Phase 4: --cache-type-k/v sweep (KV cache precision)
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Phase 5: --no-mmap, --poll, --prio sweep (misc)
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Each phase fixes the best from previous phases.
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"""
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import subprocess
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import time
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import json
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import urllib.request
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import sys
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import os
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import itertools
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try:
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sys.stdout.reconfigure(encoding='utf-8')
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except AttributeError:
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pass
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BASE_URL = "http://127.0.0.1:8000"
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LLAMA_SERVER = r"llama_bin_run\llama-server.exe"
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MODEL = r"models\gemma-4-26B-A4B-it-Q4_K_M.gguf"
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CONTEXT = 262144
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BENCHMARK_RUNS = 3
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BENCHMARK_TOKENS = 200
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# ─── Baseline (from previous tuning at -c 4096) ───
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BEST = {
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"ngl": 22,
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"t": 8,
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"tb": 8,
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"ub": 512,
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"b": 2048,
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"ctk": "q4_0",
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"ctv": "q4_0",
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"fa": "on",
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"mlock": True,
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"mmap": True,
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"prio": 2,
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"poll": 50,
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}
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ALL_RESULTS = []
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def kill_server():
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subprocess.run(["taskkill", "/F", "/IM", "llama-server.exe"],
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capture_output=True)
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time.sleep(4)
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def build_cmd(cfg):
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cmd = [LLAMA_SERVER, "--model", MODEL,
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"-ngl", str(cfg["ngl"]),
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"-c", str(CONTEXT),
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"-np", "1",
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"-fa", cfg["fa"],
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"--cache-type-k", cfg["ctk"],
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"--cache-type-v", cfg["ctv"],
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"-ub", str(cfg["ub"]),
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"-b", str(cfg["b"]),
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"-t", str(cfg["t"]),
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"-tb", str(cfg["tb"]),
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"--prio", str(cfg["prio"]),
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"--poll", str(cfg["poll"]),
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"--port", "8000",
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"--host", "0.0.0.0"]
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if cfg["mlock"]:
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cmd.append("--mlock")
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if not cfg["mmap"]:
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cmd.append("--no-mmap")
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return cmd
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def start_server(cfg):
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cmd = build_cmd(cfg)
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proc = subprocess.Popen(
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cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
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cwd=os.getcwd(), text=True, encoding='utf-8', errors='replace'
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)
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return proc
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def wait_for_server(timeout=180):
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start = time.time()
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while time.time() - start < timeout:
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try:
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req = urllib.request.Request(f"{BASE_URL}/health")
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with urllib.request.urlopen(req, timeout=3) as resp:
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data = json.loads(resp.read())
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if data.get("status") == "ok":
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return True
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except:
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pass
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time.sleep(2)
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return False
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def run_benchmark(max_tokens=BENCHMARK_TOKENS):
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payload = json.dumps({
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"model": "local-model",
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"messages": [{"role": "user", "content": "Count from 1 to 50, writing each number on a new line."}],
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"max_tokens": max_tokens,
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"temperature": 0.0
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}).encode("utf-8")
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req = urllib.request.Request(
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f"{BASE_URL}/v1/chat/completions",
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data=payload,
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headers={"Content-Type": "application/json"}
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)
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start = time.time()
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with urllib.request.urlopen(req, timeout=300) as resp:
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result = json.loads(resp.read())
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elapsed = time.time() - start
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usage = result.get("usage", {})
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ct = usage.get("completion_tokens", 0)
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return ct / elapsed if elapsed > 0 else 0
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def get_vram():
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try:
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r = subprocess.run(
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["nvidia-smi", "--query-gpu=memory.used,memory.total",
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"--format=csv,noheader,nounits"],
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capture_output=True, text=True, timeout=5
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)
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parts = r.stdout.strip().split(",")
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return int(parts[0].strip()), int(parts[1].strip())
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except:
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return 0, 0
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def test_config(cfg, label=""):
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kill_server()
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desc = label or str(cfg)
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print(f" [{desc}] Starting server...")
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proc = start_server(cfg)
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if not wait_for_server():
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print(f" [{desc}] FAILED to start")
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proc.kill()
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return None
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vram_used, vram_total = get_vram()
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print(f" [{desc}] VRAM: {vram_used}/{vram_total} MiB | ", end="", flush=True)
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# Warmup
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try:
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run_benchmark(max_tokens=20)
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except:
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pass
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# Benchmark
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speeds = []
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for i in range(BENCHMARK_RUNS):
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try:
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tps = run_benchmark()
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speeds.append(tps)
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except Exception as e:
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print(f"ERR({e}) ", end="", flush=True)
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proc.kill()
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if not speeds:
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print("ALL FAILED")
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return None
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avg = sum(speeds) / len(speeds)
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best = max(speeds)
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print(f"AVG: {avg:.2f} t/s | BEST: {best:.2f} t/s")
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result = {**cfg, "avg_tps": avg, "best_tps": best,
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"vram_used": vram_used, "vram_total": vram_total, "label": label}
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ALL_RESULTS.append(result)
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return result
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def phase_sweep(phase_name, param_name, values, base_cfg):
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print(f"\n{'='*70}")
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print(f" PHASE: {phase_name}")
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print(f" Sweeping: {param_name} = {values}")
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print(f"{'='*70}")
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best_result = None
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for val in values:
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cfg = {**base_cfg}
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if isinstance(param_name, list):
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for p, v in zip(param_name, val):
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cfg[p] = v
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label = " | ".join(f"{p}={v}" for p, v in zip(param_name, val))
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else:
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cfg[param_name] = val
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label = f"{param_name}={val}"
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r = test_config(cfg, label)
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if r and (best_result is None or r["avg_tps"] > best_result["avg_tps"]):
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best_result = r
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if best_result:
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print(f"\n ★ Phase winner: {best_result['label']} → {best_result['avg_tps']:.2f} t/s")
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return best_result
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def main():
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print("=" * 70)
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print(" Gemma4 26B-A4B COMPREHENSIVE Auto-Tuner")
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print(" 256K Context | RTX 3060 12GB")
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print("=" * 70)
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print()
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cfg = dict(BEST)
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# ─── Phase 1: -ngl (already done, quick verify top 3) ───
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r = phase_sweep("GPU Layers (-ngl)", "ngl", [22, 21, 20], cfg)
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if r:
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cfg["ngl"] = r["ngl"]
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# ─── Phase 2: CPU threads (-t, -tb) ───
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thread_combos = [
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(2, 2), (4, 4), (4, 8), (6, 6), (6, 8),
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(8, 8), (8, 12), (10, 10), (12, 12), (16, 16)
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]
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r = phase_sweep("CPU Threads (-t, -tb)", ["t", "tb"], thread_combos, cfg)
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if r:
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cfg["t"] = r["t"]
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cfg["tb"] = r["tb"]
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# ─── Phase 3: Batch sizes (-ub, -b) ───
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batch_combos = [
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(128, 512), (256, 1024), (256, 2048),
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(512, 1024), (512, 2048), (512, 4096),
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(1024, 2048), (1024, 4096)
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]
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r = phase_sweep("Batch Sizes (-ub, -b)", ["ub", "b"], batch_combos, cfg)
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if r:
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cfg["ub"] = r["ub"]
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cfg["b"] = r["b"]
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# ─── Phase 4: KV cache precision ───
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kv_combos = [
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("q4_0", "q4_0"),
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("q8_0", "q8_0"),
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("q4_0", "q8_0"),
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("f16", "f16"),
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]
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r = phase_sweep("KV Cache Type (-ctk, -ctv)", ["ctk", "ctv"], kv_combos, cfg)
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if r:
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cfg["ctk"] = r["ctk"]
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cfg["ctv"] = r["ctv"]
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# ─── Phase 5: Misc (mmap, poll, prio) ───
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misc_combos = [
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(True, 50, 2), # baseline
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(False, 50, 2), # no-mmap
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(True, 0, 2), # no polling
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(True, 100, 2), # max polling
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(True, 50, 3), # realtime priority
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(False, 0, 3), # no-mmap + no-poll + realtime
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]
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r = phase_sweep("Misc (mmap, poll, prio)", ["mmap", "poll", "prio"], misc_combos, cfg)
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if r:
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cfg["mmap"] = r["mmap"]
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cfg["poll"] = r["poll"]
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cfg["prio"] = r["prio"]
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# ─── Final Report ───
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print()
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print("=" * 70)
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print(" FINAL OPTIMAL CONFIGURATION")
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print("=" * 70)
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print(f" ngl: {cfg['ngl']}")
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print(f" threads: -t {cfg['t']} -tb {cfg['tb']}")
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print(f" batch: -ub {cfg['ub']} -b {cfg['b']}")
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print(f" kv cache: -ctk {cfg['ctk']} -ctv {cfg['ctv']}")
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print(f" flash: -fa {cfg['fa']}")
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print(f" mlock: {'yes' if cfg['mlock'] else 'no'}")
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print(f" mmap: {'yes' if cfg['mmap'] else 'no (--no-mmap)'}")
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print(f" prio: {cfg['prio']}")
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print(f" poll: {cfg['poll']}")
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print()
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# Final verification run
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print(" Running final verification (5 runs)...")
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kill_server()
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proc = start_server(cfg)
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wait_for_server()
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try:
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run_benchmark(max_tokens=20)
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except:
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pass
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final_speeds = []
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for i in range(5):
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try:
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tps = run_benchmark()
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final_speeds.append(tps)
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print(f" Run {i+1}: {tps:.2f} t/s")
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except:
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pass
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proc.kill()
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if final_speeds:
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avg = sum(final_speeds) / len(final_speeds)
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best = max(final_speeds)
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print(f"\n ★ FINAL: AVG {avg:.2f} t/s | BEST {best:.2f} t/s")
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print()
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cmd_parts = [
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f"llama-server --model {MODEL}",
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f"-ngl {cfg['ngl']} -c {CONTEXT}",
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f"-t {cfg['t']} -tb {cfg['tb']}",
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f"-ub {cfg['ub']} -b {cfg['b']}",
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f"-fa {cfg['fa']}",
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f"--cache-type-k {cfg['ctk']} --cache-type-v {cfg['ctv']}",
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f"--prio {cfg['prio']} --poll {cfg['poll']}",
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]
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if cfg["mlock"]:
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cmd_parts.append("--mlock")
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if not cfg["mmap"]:
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cmd_parts.append("--no-mmap")
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cmd_parts.append("--port 8000 --host 0.0.0.0")
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print(" Recommended command:")
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print(f" {' '.join(cmd_parts)}")
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print("=" * 70)
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# Dump all results to JSON
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with open("scripts/tune_results_gemma4_256k.json", "w") as f:
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json.dump(ALL_RESULTS, f, indent=2, default=str)
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print(f"\n Full results saved: scripts/tune_results_gemma4_256k.json")
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if __name__ == "__main__":
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main()
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