在 AI 场景中，Apache Spark 凭借其强大的批处理能力与 Python 生态兼容性，广泛用于大模型训练前的数据清洗、特征工程与推理任务。而 Ray 因其低延迟、高并发特性，被 OpenAI 等头部机构用于分布式训练与强化学习。两者共同构成 Data + AI 的核心计算底座，支持从数据准备到模型推理的全流程高效执行。
To get a better idea where LFortran is spending compilation time, you can
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70E DSTREG - SLCTR TST_SEL_LLVV PTSELA DLY ; fire protection test on selector
You are contagious and can spread chickenpox to other people from two days before the first spots develop until they have all formed scabs, which is usually five days after they first appear.