What is ia64

IA is the Intel Itanium Architecture. This processor is a dynamic processor. In VLIW, the compiler resolves the dependencies between instructions and schedules them appropriately.

The processor merely executes them. With a dynamic processor, the compiler just schedules the instructions without worrying about dependencies. The processor takes care of dependencies, reorders them and executes them appropriately.

VLIW code is dependent on each chip's internal architecture. The compiler needs to know that information. The advantage of them is that it can extract much more parallelism than dynamic processors can give. The code is independent on each chip's internal architecture for dynamic processors. It just needs to follow the instruction set. So code compiled on one machine can run on other machines very easily. The disadvantage though is that limited parallelism can be exploited from dynamic processors.

And the internal logic and design is very complex and intricate than VLIW. VLIW processors are used by servers and enterprises because of the parallelism they can produce. IA is for computers running Intel Itanium 64 bit processors.

They do not support running 32 bit applications like x64 processors do. A special version of Windows is needed to run on these processors, thus the two different installers. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? The x64 architecture is designed to extend the current x86 instruction set in a straightforward and straightforward way.

This approach is very similar to the original bit expansion to bit scenarios. The advantage is that the user can choose x86 platform or x64 platform with high compatibility. The IA64 is a native bit compute processor and is incompatible with the x86 directive. If you want to execute the x86 directive requires hardware virtualization support, and inefficient. The advantage is that the IA64 architecture system will have bit memory addressing capabilities to support a larger memory addressing space.

And because of the architectural changes, performance is higher and stronger than the x64 bit compatibility mode. Also, these IA64 schema processors are not able to use the x64 operating system. The x64 processor is free to choose x86 or x64 operating systems. Speed is not the only consideration in comparison between bit systems and bit systems. Or because of changes in numbers, it is simply assumed that bit CPU performance is twice times the size of a bit CPU. The actual bit applications at this stage are not many, and even so, many are simply because their bit versions cannot run on bit operating systems.

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Status Not open for further replies. Previous Next. Jul 28, 88 0 18, 0. What is IA64? What's x?? Why would they want to switch? Are there speed improvements?

Sorry I sound clueless, but everyone has to learn from someone! Jul 3, 0 18, 0. This architecture is very powerful, designed for very high end servers. This architecture is essentially an extension of the current 32 bit X86 CPU architecture used in , , pentiums, and compatible CPUs. A key difference between the two architectures is that IA64 contaions no legacy designs from the X86 architecture and will not be compatible with current programs you might use in Windows.

X will run these programs just fine as it has full X86 compatibility. Difference Between IA64 and x Difference Between Similar Terms and Objects. MLA 8 , lanceben. Name required. Email required. Please note: comment moderation is enabled and may delay your comment. There is no need to resubmit your comment. Notify me of followup comments via e-mail. Written by : Ben Joan.