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memormou

memormou

V2EX 第 364751 号会员,加入于 2018-11-21 16:25:55 +08:00
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2018-12-17 12:14:30 +08:00
回复了 evanlyu 创建的主题 程序员 求教复杂规则简单计算的技术选型。
你这种场景,如果按照常规的逻辑来写,同一时间只计算一个人的,即使开了多线程(算你 24 线程)也没吊用,因为这不是解决计算密集型程序的正确打开方式,CPU 给你的 SSE、AVX 等指令集用不上,逻辑判断频繁插入在数值计算里打乱流水线,完全就是低能写法。要真想解决,你得专门写一个模块来搞计算,即一次性把整块的计算需求打包输入,设计好对编译器友好的数据结构,整块计算,整块提取结果,再用上多线程,这样才能快。
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