是否存在“内存不足"的阈值?错误? [英] Is there a Threshold for "Out of Memory" error?

问题描述

当我使用类似的代码时，

When I use some code like,

 x = randi(100,[1000 1000000]);

我收到Out of Memory错误.

但是，只要有，

x = randi(100,[1000 500000]);

我没有收到任何错误，但是我的笔记本电脑几乎停止工作了！

I don't get any error but my laptop almost stops working!

，有时候我要花一个force shutdown.

我真的很喜欢Out of Memory错误！

第1季度和第2季度:该错误是否存在阈值 ，我可以调整?

Q1+Q2: Is there a threshold for that error, which I could adjust?

Q3:或其他任何建议(可能会限制MATLAB可以访问的内存)?

Q3: Or any other suggestions (maybe limit the memory that MATLAB can have access)?

谢谢

推荐答案

A1:是的，内存就是宝藏

虽然内存是一个限制，但是您观察到的 几乎停止工作" 与与CPU绑定的处理有关，该处理与任务相关联以计算所有500,000,000的值元素并存储它们.如您在 A3 中看到的那样，此尝试需要4GB的RAM存储空间来仅处理 x .

A1: Yes, the Memory is the Treshold

While the Memory is a limit, your observation of "almost stops working" is related to the CPU-bound processing associated with a task to calculate value for all 500,000,000 elements and get 'em stored. As you can see in A3 this attempt takes 4GB RAM storage to handle just the x.

如果您的问题需要更大的对象，请获取更多的空间来存储它，如果您的CPU受限的观察很重要，请从分布式处理(无论是Cloud还是Grid)中获取计算，以减轻本地主机的负担.

A3:是的.使用whos

检查消耗的MATLAB内存

If your problem requires larger objects, get more space to store it, if your CPU-bound observation matters, go get the computation from distributed processing ( be it a Cloud or a Grid ) to off-load your localhost.

mCloud:1> x = randi( 100, [1000 500000] );
mCloud:2> whos
Variables in the current scope:

   Attr Name        Size                     Bytes  Class
   ==== ====        ====                     =====  =====
        ans         1x70                       757  cell
        x        1000x500000            4000000000  double

Total is 500000070 elements using 4000000757 bytes

mCloud:3>  

这篇关于是否存在“内存不足"的阈值?错误?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！