issues from switching office 32bit to 64 bitt

However, as with any technology, there's never a free lunch! 32-bit code running in compatibility mode may in fact be slower than a native 64-bit version. Linux also allows 32-bit legacy code to run.

It sounds just perfect, being able to run 32-bit and 64-bit code on the same machine, right? Compatibility ModeĪs mentioned previously, running 32-bit C/C++ binary code is not generally an issue on modern 64-bit machines, thanks to various compatibility solutions for example, Windows has Wow64. This compatibility is really important because it allows existing or legacy 32-bit binaries to run with no compatibility or performance penalties. X86-64 is also fully backward compatible with 16-bit and 32-bit x86 code. In addition, x86-64 provides 64-bit general-purpose registers and a variety of other enhancements, such as a more resilient memory model. This is one of the major benefits of 64-bit, because it allows programs to store large amounts of data in memory. If your development platform supports it, you can play around with a 64-bit system simply by creating a virtual machine.Ī 64-bit processor supports considerably larger amounts of virtual memory and physical memory than is possible on 32-bit architectures. This is a really convenient way to experiment with different architectures: You simply create a virtual machine using VirtualBox or VMware, install an appropriate operating system, configure it, and away you go. Notice that I'm using a virtual machine running Ubuntu. If you have a 32-bit platform, you'll likely see something similar, except for a string such as i686 i386 GNU/Linux. If you see output similar to this, then you have a 64-bit machine that is, the architecture is x86-64. Notice the presence of the x86_64 symbol.

On Linux, just type the following terminal command: $ uname -a It's easy to find out if your system is 64-bit or not. X86-64 (also known as 圆4, x86_64, and AMD64) is the 64-bit version of the instruction set for. Most of the code examples for this article are pretty simple, but a zip file is available for download.

Issues from switching office 32bit to 64 bitt