c++ - Benefit of 64 bit over 32 bit with QT and opengl -

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However, searching for a while, I can not get a clear answer to what the benefits are for compiling 64 bit programs over 32 beats. I

How to compile for 32 or 64 bit, and there are some questions about 64 bit versions of OpenGL, but they do not know the base question,

What I am getting is that it is difficult to use the Minigu compiler for 64 bit Since Qt does not seem to be official release. Currently I use MinjiW 32bit to create a 3D OpenLL program which focuses heavily on the speed with the upper part of the larger sets (using VBO to handle it). I think I will turn into Visual Studio for the release of windows and maybe use 64-bit unofficial release for other platforms.

Since I am not getting an OS yet, the compiled 32 bit version does not work, but the targeted deployment of my application will be mainly on the high end computer in the research environment, I release 64 bit versions I'm fine.

If the code is the same, then there is a specific advantage to switcher the compiler using Qt 5 and 32 to 64 bit for an application to use OpenGL?

You will need to make sure that your dependency library is compiled for 64-bit, But then the benefits are mainly like more RAM (4 + GIG in a single processing) and possibly faster data access times (due to a larger word size). Second, depending on your data access pattern, and how much the prediction cache can help, it is difficult to know whether it will help a lot. For the most random access pattern, it does not help in a mediocre way, and it is usually too high with do data by you.

For OpenGL, this will not really make much difference.


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