View the number of Apple systems (and set 32 or 64-bit systems)

The Mac OS X 10.6 snow leopard System of Apple Computer supports both 32-bit and 64-bit modes. There are too many words about the benefits of enabling 64-bit, which will be introduced in the second half of this article. Next, let's first check whether your Apple Computer has 64-bit enabled and how to set the Mac OS X system to run in 32-bit or 64-Bit mode.

Click the apple logo in the upper-left corner of the Mac screen, select "about local computer", and click "more information..." in the displayed square window ..." In the "software" column, you can see whether your Mac OS X system of your Apple Computer has enabled 64-bit operations.

Next, let's talk about how to set up whether your Apple Computer runs a 64-bit or 32-bit Mac OS X system.

Open the terminal (click the magnifier in the upper-right corner of the Mac screen to search for the two words). If you want to enable the 64-Bit mode for Mac, enter the following command, press enter, and then enter the password.

Sudo NVRAM boot-ARGs = "arch = x86_64"

Enter this command to run in 32-Bit mode.

Sudo NVRAM boot-ARGs = "arch = x86_32"

Note that in Mac OS X systems (the same for Linux and UNIX systems), there is no small star in entering the password in the terminal. Do not think that the keyboard is broken or the program is dead.

Restart Mac.

The above is a permanent method. If only one 64-bit is used occasionally, press and hold the keys 6 and 4 at startup.

The benefits of enabling 64-bit Mac OS x on Mac OS X:

Memory is no longer limited

64-bit operation means that the space limit for running the program is no longer 4 gb ram ....... The 32 times of 2 and the 64-power of 2 are counted by yourself.

Grand Central Dispatch improves CPU usage

Grand Central Dispatch, hereinafter referred to as GDC, allows the operating system to monitor the threads of GCD-aware programs. In the past, Mac OS X was used to allow the program itself to manage multiple threads, while GCD was used to allow the operating system to manage threads and dynamically allocate processor resources to threads, this greatly improves the CPU usage efficiency.

Opencl and GPU Acceleration

GCD improves the CPU processing of multi-threaded programs, while opencl accelerates GPU. In short, opencl allows powerful GPUs to participate in some non-graphic operations. Among the three benefits of the 64-Bit mode, opencl relies most on hardware.

Finally, enabling 64-bit will not cause stability and other problems. my MacBook Pro has been running in 64-Bit mode for a year, and there is no problem at all.