回答此问题可获得 20 贡献值,回答如果被采纳可获得 50 分。
<p>该文件包含2000000行:
每行包含208列,用逗号分隔,如下所示:</p>
<pre>0.0863314058048,0.0208767447842,0.03358010485,0.0,1.0,0.0,0.314285714286,0.336293217457,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0</pre>
<p>程序将这个文件读入一个numpynarray,我预计它将消耗大约<code>(2000000 * 208 * 8B) = 3.2GB</code>内存。
但是,当程序读取这个文件时,我发现程序消耗了大约20GB的内存。在</p>
<p>我很困惑为什么我的程序会消耗这么多内存而无法满足预期?在</p>