1# Loading E2B with LiteRT-LM (TensorFlow Lite Runtime)
2import litert_lm
3
4interpreter = litert_lm.Interpreter(
5    model_path="gemma-4-e2b-int8.tflite",
6    num_threads=4  # Use all Raspberry Pi 5 cores
7)
8
9# First inference warm-up
10interpreter.invoke(prompt="Hello, Gemma!")
11# Subsequent calls: ~8-12 tokens/sec on Pi 5

1// Modern Android (API 34+) with AICore
2class GemmaInferenceService : Service() {
3    private lateinit var generativeModel: GenerativeModel
4    
5    override fun onCreate() {
6        super.onCreate()
7        
8        // System-defined configuration for edge inference
9        val config = InferenceConfiguration.Builder()
10            .setTemperature(0.7f)
11            .setMaxOutputTokens(1024)
12            .setTopK(40)
13            .build()
14            
15        generativeModel = GenerativeModel(
16            modelName = "gemma-4-e2b",
17            config = config,
18            context = applicationContext
19        )
20    }
21    
22    fun analyzeImage(bitmap: Bitmap, userQuery: String): Flow<String> {
23        return generativeModel.generateContentStream(
24            content {
25                image(bitmap)
26                text(userQuery)
27            }
28        ).map { it.text ?: "" }
29    }
30}

1import MLX
2import MLXLLM
3
4// Convert Gemma 4 E2B to Core ML or run via MLX
5let modelConfiguration = ModelConfiguration(
6    id: "google/gemma-4-e2b",
7    overrideTokenizer: "PreTrainedTokenizer"
8)
9
10let modelContainer = try await LLMModelFactory.shared.loadContainer(
11    configuration: modelConfiguration
12)
13
14let result = await modelContainer.perform { context in
15    let input = try await context.processor.prepare(
16        input: .init(
17            messages: [
18                ["role": "user", "content": "Summarize this document"]
19            ]
20        )
21    )
22    return try context.model.generate(input, maxTokens: 512)
23}
24
25// iPhone 15 Pro: 18 tokens/sec (A17 Pro Neural Engine)
26// iPhone 14: 12 tokens/sec (A16)

1# 1. Install optimized Python stack
2sudo apt install python3-pip libopenblas-dev libomp-dev
3pip install litert_lm numpy
4
5# 2. Download quantized model
6wget https://huggingface.co/google/gemma-4-e2b/resolve/main/gemma-4-e2b-q8_0.gguf
7
8# 3. FastAPI server for local network inference
9from fastapi import FastAPI
10from pydantic import BaseModel
11import litert_lm
12
13app = FastAPI()
14interpreter = litert_lm.Interpreter("gemma-4-e2b-q8_0.gguf")
15
16class InferenceRequest(BaseModel):
17    prompt: str
18    max_tokens: int = 256
19
20@app.post("/generate")
21async def generate(request: InferenceRequest):
22    result = interpreter.invoke(
23        prompt=request.prompt,
24        max_tokens=request.max_tokens
25    )
26    return {"text": result, "tokens_per_sec": 8.5}
27
28# uvicorn main:app --host 0.0.0.0 --port 8000

1# Overclock for stable 10 tokens/sec
2sudo nano /boot/firmware/config.txt
3# Add:
4arm_freq=2800
5over_voltage=8
6
7# Enable Zswap for better memory compression
8sudo nano /etc/default/grub
9# Add: zswap.enabled=1 zswap.compressor=zstd

1# JetPack 6.0 + TensorRT optimization
2import tensorrt as trt
3import pycuda.driver as cuda
4
5# Convert E4B to TensorRT engine
6builder = trt.Builder(logger)
7network = builder.create_network(
8    1 << int(trt.NetworkDefinitionCreationFlag.EXPLICIT_BATCH)
9)
10
11# Gemma 4's grouped query attention optimizes perfectly
12# for TensorRT's kernel fusion
13config = builder.create_builder_config()
14config.max_workspace_size = 4 * 1024 * 1024 * 1024  # 4GB
15config.set_flag(trt.BuilderFlag.FP16)
16
17# Jetson Orin Nano: 15-20 tokens/sec for E4B
18# Power consumption: ~15W under full load

1// Transformers.js with WebGPU backend
2import { AutoModelForCausalLM, AutoTokenizer } from '@huggingface/transformers';
3
4const model = await AutoModelForCausalLM.from_pretrained(
5    'google/gemma-4-e2b',
6    { 
7        dtype: 'q4',
8        device: 'webgpu'  // Falls back to WASM if unavailable
9    }
10);
11
12const tokenizer = await AutoTokenizer.from_pretrained('google/gemma-4-e2b');
13
14// Chrome/Edge with WebGPU: 4-6 tokens/sec on integrated graphics
15// Falls back to CPU (WASM) on Safari: 2-3 tokens/sec
16const inputs = await tokenizer('Explain quantum computing in simple terms');
17const outputs = await model.generate(inputs, { max_new_tokens: 256 });

1# Even INT8 weights aren't enough—compress the KV cache too
2from vllm import LLM
3
4llm = LLM(
5    model="google/gemma-4-e4b",
6    quantization="awq",
7    kv_cache_dtype="fp8",  # 50% memory reduction
8    max_model_len=16384    # Don't waste cache on unused capacity
9)

1# Gemma 4 supports configurable attention windows
2# On edge, use 4096 local + 1024 global anchors
3
4config = Gemma4Config(
5    sliding_window=4096,
6    global_attn_every_n_layers=4,
7    max_position_embeddings=32768  # Effective, not absolute
8)

1# Load only layers needed for current batch
2class ProgressiveLoader:
3    def __init__(self, model_path):
4        self.layer_cache = LRUCache(maxsize=8)  # Keep 8 layers in RAM
5        self.disk_layers = self._index_layers(model_path)
6    
7    def forward(self, layer_idx, hidden_states):
8        if layer_idx not in self.layer_cache:
9            self.layer_cache[layer_idx] = self._load_layer(layer_idx)
10        return self.layer_cache[layer_idx](hidden_states)
11
12# Enables 27B models on 16GB devices (slower, but possible)

1# Deployed on ruggedized Android tablet in rural clinics
2# No internet required, patient data never leaves device
3
4SYSTEM_PROMPT = """You are a clinical decision support tool. 
5Suggest possible diagnoses based on symptoms, but ALWAYS 
6recommend consulting a physician for confirmation."""
7
8class OfflineMedicalAssistant:
9    def __init__(self):
10        self.model = load_gemma_4_e4b_int8()
11        
12    def triage(self, symptoms: List[str], image: Optional[Image] = None):
13        prompt = f"Symptoms: {', '.join(symptoms)}\nAssess urgency and suggest next steps."
14        
15        if image:
16            # Native vision: analyze rash, wound, etc.
17            return self.model.generate(vision_input=image, text_input=prompt)
18        
19        return self.model.generate(text_input=prompt)

1# Real-time defect detection on manufacturing line
2# 30 FPS camera feed + Gemma 4 E4B analysis
3
4def quality_control_loop():
5    camera = cv2.VideoCapture(0)
6    model = load_gemma_4_e4b_tensorrt()
7    
8    while True:
9        ret, frame = camera.read()
10        if not ret:
11            break
12            
13        # Native vision: describe defects in natural language
14        result = model.generate(
15            vision_input=frame,
16            text_input="Identify any manufacturing defects. Be specific about type and severity."
17        )
18        
19        if "defect" in result.lower():
20            trigger_alert(result)
21            save_for_review(frame, result)

1# Technician wears Pi 5 in tool belt, queries via Bluetooth earpiece
2# Voice input → Gemma 4 E2B → Audio output
3
4whisper --model tiny --stream | \
5    python gemma_inference.py | \
6    piper-tts --model en_US-lessac-medium
7
8# Complete hands-free troubleshooting assistant
9# ~$100 hardware total