Ia-32 support, Computer Engineering

In order to support IA-32, the Itanium can switch into 32-bit mode with special jump escape instructions. The IA-32 instructions have been mapped to the Itanium's functional units. Though, the Itanium is built primarily for speed of its EPIC-style instructions, and because it has no out-of-order implementation capabilities, IA-32 code implements at a severe performance penalty compared to either the IA-64 mode or the Pentium line of processors. For example, the Itanium functional units do not automatically make integer flags as a side effect of ordinary ALU computation, and do not intrinsically support multiple outstanding unaligned memory loads. There are also IA- 32 software emulators which are freely available for Linux and Windows, and these emulators typically outperform the hardware-based emulation by around 50%. The Linux emulator is available from some Linux vendors such as Novell and from Intel itself and the Windows emulator is available from Microsoft. Given the superior performance of the software emulator and despite the fact that IA-32 hardware accounts for less than 1% of the transistors of an Itanium 2, Intel plan to eliminate the circuitry from the next- generation Itanium 2 chip codenamed "Montecito".

Posted Date: 3/5/2013 5:45:11 AM | Location : United States







Related Discussions:- Ia-32 support, Assignment Help, Ask Question on Ia-32 support, Get Answer, Expert's Help, Ia-32 support Discussions

Write discussion on Ia-32 support
Your posts are moderated
Related Questions
Q. Explain Point-to-point Message Passing? In point to point message passing, one process transmits/receives message from/to another process. There are four communication modes

What is model?  A universe together with an assignment of relations to relation symbol is known as a model.  A model M is a tuple (U, P1, P2..Pk), where U is the universe and P

You were offered bonus marks for separating the user interface code from the main logic of your program. This design choice makes it very easy to replace the user interface without


Add 20 and (-15) using 2's complement ? Ans. Addition of 20 and (-15) by using 2's complement as (20) 10 = 1 0 1 0 0                                                  (16

Take the following recurrence relation consider only for n = 2k for integers k ≥ 1: T(2) = 9, and for n ≥ 4, T(n) = n + T(n /2). Three students were working together in a stu

Explain about subsystem and object of object oriented modeling A subsystem is a grouping of elements of that constitutes a specification of behaviour offered by other contained

What is a heap? A complete binary tree, every of whose elements contains a value that is  greater than or equal to the value of every of its children is known a Heap

State the Tips of timescale directive Include a `timescale directive at the top of each module, even if there are no delays i n the module, since some simulators may require th

Problem : a) What do you meant by a Multimedia Authoring System? b) Compare the verbose syntax to the dot syntax in Lingo. c) Explain each of the following terms: i) L