https://dapengfeng.github.io用图形理解数学，用实验认识物理，用数据探索代码的性能。冯大鹏的个人知识实验室。enhttps://dapengfeng.github.io/blog/spike_notes.htmlhttps://dapengfeng.github.io/blog/spike_notes.htmlWed, 23 Sep 2026 04:00:00 GMTFive interactive experiments connect LIF, UltraLIF, BPTT, STDP and EventProp. From dynamics to learning rules, bring the equations to life.mathhttps://dapengfeng.github.io/blog/rust-vs-cpp-blog.htmlhttps://dapengfeng.github.io/blog/rust-vs-cpp-blog.htmlWed, 23 Sep 2026 04:00:00 GMTMemory safety, zero-cost abstractions and engineering trade-offs. Explore systems languages through comparisons and code experiments.systemshttps://dapengfeng.github.io/blog/cuda-rust-two-tracks-blog.htmlhttps://dapengfeng.github.io/blog/cuda-rust-two-tracks-blog.htmlWed, 23 Sep 2026 04:00:00 GMTOne vector operation, two programming models: interactive indexing, Rust write ownership, C++ boundary checks, and a GPU measurement plan.systemshttps://dapengfeng.github.io/blog/benchmark-with-evidence.htmlhttps://dapengfeng.github.io/blog/benchmark-with-evidence.htmlWed, 23 Sep 2026 04:00:00 GMTWarm up, repeat, and verify. Run a small experiment in your browser and examine the conditions behind the numbers.benchmarkhttps://dapengfeng.github.io/blog/waves-and-phase.htmlhttps://dapengfeng.github.io/blog/waves-and-phase.htmlWed, 23 Sep 2026 04:00:00 GMTChange the phase and frequency to see two waves reinforce or cancel. Connect trigonometry with physical intuition.physicshttps://dapengfeng.github.io/blog/band-storage-gaxpy.htmlhttps://dapengfeng.github.io/blog/band-storage-gaxpy.htmlMon, 19 Jul 2021 04:00:00 GMTMove entries between a dense matrix and its band storage, then verify a C++ GAXPY implementation.systemshttps://dapengfeng.github.io/blog/symmetric-storage-gaxpy.htmlhttps://dapengfeng.github.io/blog/symmetric-storage-gaxpy.htmlMon, 19 Jul 2021 04:00:00 GMTTrace mirrored entries into one packed array and verify both output updates with C++.systemshttps://dapengfeng.github.io/blog/fast-matrix-vector-products.htmlhttps://dapengfeng.github.io/blog/fast-matrix-vector-products.htmlSat, 12 Jan 2019 04:00:00 GMTExplore an eight-point spectrum, unpack the FFT butterfly, and verify C++ FFT results against a direct DFT.mathhttps://dapengfeng.github.io/blog/matrix-multiplication.htmlhttps://dapengfeng.github.io/blog/matrix-multiplication.htmlMon, 07 Jan 2019 04:00:00 GMTSee memory strides, compare loop orders and blocking, then compile checked C++ kernels and measure real timings.systemshttps://dapengfeng.github.io/blog/frank-wolfe-algorithm.htmlhttps://dapengfeng.github.io/blog/frank-wolfe-algorithm.htmlFri, 04 Jan 2019 04:00:00 GMTWalk through a constrained optimization path, derive a stopping certificate, and run checked C++ Frank–Wolfe steps.math