如何为我的程序使用尽可能多的RAM？
[英]How to use as much RAM as possible for my program?
问题描述
I am striving to maximize speed of my program (in order to get results in real-time) and avoid unnecessary loading of data from hard drive. 
我正在努力最大化我的程序速度（以便实时获得结果）并避免从硬盘驱动器中不必要地加载数据。
Program is supposed to process a huge amount of images and I would like to handle in RAM as much processed data as possible. 程序应该处理大量的图像，我想尽可能多地处理RAM中的处理数据。 But I found out that malloc won't allocate more than 2GB even when I'm having 8GB of RAM (Windows 7 64-bit). 但我发现即使我有8GB的RAM（Windows 7 64位）， malloc也不会分配超过2GB的内存。
How can I make my program use as much RAM as possible? 如何让我的程序尽可能多地使用RAM？
1 个解决方案
解决方案1
7 已采纳 2013-08-09 11:31:22
I believe the windows equivalent of mmap(2) is VirtualAlloc 我认为相当于mmap(2)的窗口是VirtualAlloc
This should allow you to use a lot more memory. 这应该允许您使用更多的内存。 Please keep in mind that the OS may still decide to page out your memory. 请记住，操作系统仍可能决定将您的记忆分页。 You can lock it in RAM with VirtualLock . 您可以使用VirtualLock将其锁定在RAM中。 The amount of lockable memory may be limited though. 然而，可锁定存储器的数量可能是有限的。
Also as mentioned in the comments make sure to compile your program as 64-bit. 另外，如评论中所述，请确保将程序编译为64位。
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