优化 Jacobian 确定性复用并补充性能剖析与平台依赖文档
在单次 Jacobian 构建内按完整输入精确复用储气物性、PH 反算、密度和管路求根结果,保持原有求值副作用、差分政策与失败回退。八路模型求解 CPU 中位数减少 19.27%,循环和不循环的完整原始采样均与恢复基线一致。 增加独立的跨平台时间剖析工具,记录互斥阶段耗时、Newton/LU 统计、矩阵复用与内核复用,保存 UD00 两种工况的调查报告和机器可读汇总。 补充 Windows/Linux 运行、测试、原生编译和剖析所需依赖文档及索引,不修改依赖清单、版本锁或安装环境。 验证:8 项新增专项回归通过;2270 次完整 Jacobian 核对零差异;16 次剖析配对及预热运行保持完整数值一致。既有固定样本哈希失败和 Linux 实机验收限制见报告。
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@@ -125,7 +125,15 @@ double native_pipe_flow_context(NativePropertyCache *cache,const NativeMedium *m
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if(4*lam/den<=1000) return sign*lam;
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}
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double base=area*p*cm/sqrt(T),K=pow(4*base/den,2)*d/length;
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return sign*native_pipe_resistance(K,rr,den/4,NULL)*den/4;
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double resistance;
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if(cache && cache->jacobian) {
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double key[]={K,rr,den/4};
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if(!native_jacobian_scalar_get(cache->jacobian,NATIVE_JACOBIAN_PIPE,0,key,3,&resistance)) {
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resistance=native_pipe_resistance(K,rr,den/4,NULL);
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native_jacobian_scalar_put(cache->jacobian,NATIVE_JACOBIAN_PIPE,0,key,3,resistance);
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}
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} else resistance=native_pipe_resistance(K,rr,den/4,NULL);
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return sign*resistance*den/4;
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}
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double native_pipe_flow_cached(NativePipeCache *cache, const NativeMedium *m,
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double p1, double p2, double T, double d,
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