Initial commit: E4B-MarkBase model integration with passing tests

- E4B-MarkBase model (42 layers, 4.4GB) loaded successfully - All Phase 1-6 tests passed (model loading, forward pass, vision/audio towers, token generation, performance) - All stress tests passed (5/5 in 127.6s) - Concurrent inference - Memory stress (67.5 tok/s, 0 NaN) - Continuous generation - Batch processing - Long-running stability - Swift Metal inference engine with multimodal support
2026-06-23 18:12:35 +08:00
commit ac75faa0cc
301 changed files with 63426 additions and 0 deletions
@@ -0,0 +1,92 @@
+import Foundation
+
+// ─────────────────────────────────────────────────────────────
+// Load Balancer for Cross-Device Communication
+// ─────────────────────────────────────────────────────────────
+
+/// Load balancing strategies
+public enum LoadBalancingStrategy: Sendable {
+    case roundRobin
+    case leastLoaded
+    case random
+    case geographic
+}
+
+/// Load balancer
+public final class LoadBalancer: @unchecked Sendable {
+    private var nodes: [DeviceNode] = []
+    private var currentIndex: Int = 0
+    private let strategy: LoadBalancingStrategy
+    private let lock = NSLock()
+    
+    public init(strategy: LoadBalancingStrategy = .roundRobin) {
+        self.strategy = strategy
+    }
+    
+    /// Add a node
+    public func addNode(_ node: DeviceNode) {
+        lock.lock()
+        defer { lock.unlock() }
+        nodes.append(node)
+    }
+    
+    /// Remove a node
+    public func removeNode(id: String) {
+        lock.lock()
+        defer { lock.unlock() }
+        nodes.removeAll { $0.id == id }
+    }
+    
+    /// Get next node based on strategy
+    public func getNextNode() -> DeviceNode? {
+        lock.lock()
+        defer { lock.unlock() }
+        
+        let healthyNodes = nodes.filter { $0.status == .healthy }
+        guard !healthyNodes.isEmpty else { return nil }
+        
+        switch strategy {
+        case .roundRobin:
+            let node = healthyNodes[currentIndex % healthyNodes.count]
+            currentIndex += 1
+            return node
+            
+        case .leastLoaded:
+            return healthyNodes.min { $0.load < $1.load }
+            
+        case .random:
+            return healthyNodes.randomElement()
+            
+        case .geographic:
+            // Simplified: return node with lowest latency
+            return healthyNodes.first
+        }
+    }
+    
+    /// Update node status
+    public func updateNodeStatus(id: String, status: DeviceStatus, load: Double? = nil) {
+        lock.lock()
+        defer { lock.unlock() }
+        
+        if let index = nodes.firstIndex(where: { $0.id == id }) {
+            var node = nodes[index]
+            node.status = status
+            if let load = load {
+                node.load = load
+            }
+            nodes[index] = node
+        }
+    }
+    
+    /// Get all nodes
+    public func getNodes() -> [DeviceNode] {
+        lock.lock()
+        defer { lock.unlock() }
+        return nodes
+    }
+    
+    /// Get healthy nodes count
+    public var healthyNodesCount: Int {
+        nodes.filter { $0.status == .healthy }.count
+    }
+}