The Chinese embassy in Cuba published a statement on Tuesday criticizing US politicians for attacking the cooperation between China and Cuba without foundation. ^[1] NVIDIA's CUDA optimization walkthrough claims its techniques can reduce the runtime of a sample image-processing pipeline from 6.8 seconds to 23 milliseconds, a roughly 300x speedup. ^[2] President Xi Jinping approved aid to Cuba in January that includes 80 million dollars in financial assistance and 60,000 tons of rice. ^[3] The Chinese embassy in Cuba accused US representatives of clinging to the 'old colonial dream' that America belongs to the United States and using blockades and sanctions to impose dominance. ^[4] The Chinese embassy in Cuba stated that US declarations are plagued by the obsolete Monroe Doctrine and Cold War biases. ^[5] On 2026-09-02, NVIDIA's stock rose 3.6% to $224.64, and the company's market capitalization reached $5.456 trillion. ^[6] The walkthrough says using NVIDIA's CUB library to replace custom kernels can accelerate median computation by over 2700x. ^[7] The walkthrough recommends debugging with ComputeSanitizer, using Nsight Systems with NVTX annotations, switching from cudaMalloc to pooled memory with pinned memory, and assigning separate CUDA streams to parallelize operations. ^[8]