MarkBase Admin
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CI / build-and-test (push) Has been cancelled
- 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
47 lines
1.5 KiB
Swift
47 lines
1.5 KiB
Swift
import Foundation
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import MarkBase
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print("\n=== 测试 NaN Bug ===\n")
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let modelPath = "./models/E4B-MarkBase"
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print("加载模型...")
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let engine = try MarkBaseEngine(autoCompile: true)
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let model = try E4BModel(modelDir: modelPath, engine: engine, maxContextLength: 512)
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let tokenizer = try TokenizerFactory.load(modelDir: modelPath)
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print("✓ 模型加载完成\n")
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// 测试 prompt encoding
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let prompt = "Hello"
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print("Prompt: '\(prompt)'")
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let promptTokens = tokenizer.encode(text: prompt)
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print("Tokens: \(promptTokens)")
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print("Token details:")
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for (i, tokenId) in promptTokens.enumerated() {
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let raw = tokenizer.rawToken(for: tokenId) ?? "nil"
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print(" [\(i)] ID=\(tokenId) → '\(raw)'")
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}
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print("\n=== 测试 Forward Pass ===\n")
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// 测试第一个 token 的 forward pass
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var lastLogits: [Float] = []
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for (position, tokenId) in promptTokens.enumerated() {
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print("Forward pass: tokenId=\(tokenId), position=\(position)")
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lastLogits = try model.forward(tokenId: tokenId, position: position)
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// 检查 NaN
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let hasNaN = lastLogits.contains { $0.isNaN }
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let nanCount = lastLogits.filter { $0.isNaN }.count
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let maxVal = lastLogits.max() ?? 0
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let minVal = lastLogits.min() ?? 0
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print(" Logits: count=\(lastLogits.count), hasNaN=\(hasNaN), nanCount=\(nanCount)")
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print(" Stats: max=\(maxVal), min=\(minVal)")
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if nanCount < 10 {
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print(" Sample (first 20): \(lastLogits.prefix(20))")
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}
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print()
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}
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print("=== 测试完成 ===")
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