Definition 4 (Definition: Fundamental Group) Let \(X\) be a topological space and \(x_0 \in X\) a basepoint. A loop based at \(x_0\) is a continuous map \(\gamma: [0,1] \to X\) with \(\gamma(0) = \gamma(1) = x_0\). Two loops \(\gamma, \delta\) are homotopic relative to \(x_0\) (written \(\gamma \simeq \delta\)) if there exists a continuous map \(H: [0,1] \times [0,1] \to X\) such that \[H(s,0) = \gamma(s), \quad H(s,1) = \delta(s), \quad H(0,t) = H(1,t) = x_0\] for all \(s,t \in [0,1]\). This is an equivalence relation; denote the equivalence class of \(\gamma\) by \([\gamma]\).
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Let’s reuse the example of the electrical gate controller module. Assume there’s another module that for reporting purposes computes how much electrical power was used to open the gate. It takes the opening ratio, converts it to voltage and then uses some configured engine parameters to compute the power. In such a design, we would violate the High Cohesion pattern, because the knowledge about engine design and usage would be dispersed in two modules. If a developer had adjusted the voltage conversion logic, would he/she remember to adjust the second module as well? If not, a bug would be introduced.
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That said, getting a high performance core is only one piece of the puzzle. Gaming workloads are very important in the consumer space, and benefit more from a strong memory subsystem than high core throughput. A DSU variant with L3 capacity options greater than 32 MB could help in that area. X86-64’s strong software ecosystem is another challenge to tackle. And finally, Arm still relies on its partners to carry out its vision. I look forward to seeing Arm take on all of these challenges, while also iterating on their core line to keep pace as AMD and Intel improve their cores. Hopefully, extra competition will make better, more affordable CPUs for all of us.
There are some well established patterns that can be used to design applications in a modular way. These concepts can be used to enforce the characteristics described above, so don’t be surprised they’re highly related.。关于这个话题，同城约会提供了深入分析