IT界討論區(58) 唔講上一份人工

http://altitudelabs.com/case-studies/apple-daily

This one?

呢啲？
graphics.stanford.edu/~seander/bithacks.html

一開始未有相關工作經驗前 你會整d咩project 拎去見工？

香港主要寫都係Java
點都要學下點tune 好個performance佢

咁我始終都係之前有接觸過依類型工作，點都係叫有工作經驗既

可能佢淨係配咗500mb RAM畀JVM，唔夠RAM就會開始拖CPU

java開發慢 成日聽

本身都諗住係低人工啲，當學野
準備緊搵ou讀

又要整攞你命三千CMS

唔開心，等死，分享一隻垃圾股計法

癲佬

送錢俾你都話癲佬，你話𠵱個咩世界

總之乜撚嘢都係我錯，成條命都係 Exceptions

就揸五皮貨俾你睇
跌到 10 蚊都唔放

連登 IT 狗一齊上岸
唔洗再做二世祖隻撚狗

今日到 3333 發癲
愈有錢愈有得玩

盈警好，可以再買

4折賣個橙俾你
你話個橙有啲爛，只值一折，咁冇得講

Low level tuning 除bit twiddling還有好多野玩播, 例如

- compiler tuning (flag tuning, profile guided optimization, JIT, compiler modification)
- kernel tuning (parameter setting)
- vectorization (MMX, SSE, AVX, ARM Neon, IBM VSX)
- intrinsic/assembly programming (e.g. CPU specific instructions)
- algorithmic tuning (e.g. computing CRC using finite field multiplication in GF(2))
- memory tuning (cache optimization, data layout, prefetching, NUMA/SMP optimization)
- threading
- locking (contention avoidance, lockless programming, concurrent algorithms)
- I/O tuning (async I/O, user space I/O)
- h/w accelerators, e.g. FPGA programming.

利申：上面堆野唔係全部玩過，玩過一部份。

想自己玩呢啲要點入門？開個GitHub Project自己搞個冇特點嘅Langauge？🤔

想玩SIMD同gpu computing,點入們