Read Back Mapped File Wasting too Much Memory

2 次查看（过去 30 天）

Ka Mirul 2017-3-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/327446-read-back-mapped-file-wasting-too-much-memory

评论： Jan 2017-3-1

Dear Matlab users, I have a problem when read back mapped file. I use memmapfile to directly map a portion of TIFF file into my m-file. And it works for 1200 files and store it as character. This is the example :

nfile = 12000
rawdata = {1.nfile}
for i = 1 : nfile
rawdata{i} = memmapfile ('i-th.tiff') ; % just for example
end

However when i call back and try to use the data inside rawdata, the process taking too much used memory during read out mapped file:

for i = 1 : nfile
read_out = rawdata{i}.data ;
imwrite(read_out) ;
end

I have search for related problem and find nothing. Is anyone in this forum have same problem and have the solution? Thank you for your help.

Best Regards

Mirul

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Jan 2017-3-1

How much is "too much"? How do you determine the amount of used memory? What do you expect when you map 1200 files to memory? How large are the TIFFs?

请先登录，再进行评论。

请先登录，再回答此问题。