如何解决MATLAB中的内存不足错误? [英] How can I resolve out of memory error in MATLAB?

问题描述

我想计算2个大小为(10304,1034)的协方差矩阵，而matlab创建第一个协方差矩阵，但是当它运行第二个命令时，会发生此错误:

I want to calculate 2 covariance matrices with size (10304,1034) and matlab creates the first one but when it runs the second command, this error occurs:

>> j=ones(10000,10000);
>> jj=ones(10000,10000);
??? Out of memory. Type HELP MEMORY for your options.

我的笔记本电脑的RAM为2GB，但仍有1GB可用空间.我正在使用Windows 7和32位MATLAB 2009b.

My laptop's RAM is 2GB, but it still has 1 GB free. I am using Windows 7 and 32-bit MATLAB 2009b.

如何解决此错误?

推荐答案

一个10k x 10k的双精度数组使用1e8 * 8字节，相当于800MB. MATLAB需要这些800MB是连续的.您的1GB可用内存极有可能是零散的，因此MATLAB无法将新阵列装入RAM.

A 10k-by-10k array of doubles uses 1e8*8 bytes, which corresponds to 800MB. MATLAB needs these 800MB to be contiguous. Most likely, your 1GB free memory is a little fragmented, so MATLAB cannot fit the new array into RAM.

使用命令内存查找MATLAB在给定时刻可以处理的最大变量大小.

Use the command MEMORY to find out the maximum variable size that MATLAB can handle at a given moment.

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