[問題] 關於平行計算 反而更慢 請問如何加速呢?
最近用到平行程式 想請教兩個問題
第一個問題是
我用 AsyncTask 開五個 加上 原本的main thread 下去跑,
(總共六個thread跑)跑出來的時間竟然比沒有用Async Task 還慢.....
PS:真得有平行在跑 有看system.out
請問有人有遇到同樣的問題嗎? 搞不懂為甚麼開thread 會 跑得比較慢?
請問該如何加快呢?
第二個問題是
請問有前輩可以分享一下用平行計算的經驗嗎?
感激
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