Overview of the ia64 architecture karthik swaminathan table of. Intel processors based on the itanium architecture may contain design defects or errors known as errata which may cause the product to. Intel is releasing four new 9700series itanium cpus based on the kittson architecture, and the chips are the last new itanium processors that the company plans to ship. Itanium is a fairly new and rather unusual architecture. Its defining feature is explicitlyparallel instructionset computing epic, which moves the onus for exploiting instructionlevel. Pdf introducing the ia64 architecture researchgate.
The itanium architecture originated at hewlettpackard hp, and was later jointly developed by hp and intel. Support for 64bit processors and hence operating systems is nothing new when running on suns sparc processors suns solaris is a 64bit os. Binaries using the itanium architecture instruction set may program to either. The 9500series processors utilize the intel itanium architecture also known as the ia64 isa, and are used in large mainframelike systems for missioncritical applications where redundancy and. Intels ia64 processor architecture is designed to overcome these limitations. Introductionto microarchitectural optimizationfor itanium.
To give another example, ibms aix takes on the 64bit mantle when it is running on an rs6000. Intels itanium cpus, once a play for 64bit servers and. Intel ia 64 architecture software developers manual, itanium software conventions. Intel ia64 architecture software developers manual, itanium software conventions. The intel itanium processor family uses the general register stack for procedure call management, thus eliminating the frequent memory accesses. Intel turbo boost technology 2, featuring sustained boost, enables the intel itanium processor 9700 series to employ advanced power monitoring and control, which delivers a higher processor boost frequency at all times, for maximum performance on all workloads. Intel ia64 processors may contain design defects or errors known as errata.
Intels ia64 manual provides a complete specification of the ia64 architecture. The result is higher thermal envelope utilization for more overall performance. Intel finally releases 9500series itanium, announces. The intel itanium processor reference manual for software development describes modelspecific architectural features incorporated into the intel itanium processor, the first processor based on the itanium architecture. Intel itanium processor 9700 series product brief download pdf the new intel itanium processor 9700 series builds on prior generations of intel itanium, with scalable performance, reliability, and power efficiency. Intel ia64 processors may contain design defects or errors known as errata which may. Intel marketed the processors for enterprise servers and highperformance computing systems. The ip family came about for respective reasons, but the primary one was that the processor architecture advances of risc were no longer developing at the rate seen in the 1980s or the 1990s. Intel itanium architecture software developers manual, volume 3. Intel itanium processorspecific application binary interface abi.
Intel itanium processor specific application binary. Xd bit an nx bit implementation, hyperthreading, turbo boost, vti2 itanium virtualization technology, intel vtd, ras with advanced machine check architecture, cache safe technology, enhanced demand based switching, two ddr3 memory. The 9500series processors utilise the intel itanium architecture also known as the ia64 isa, and are used in large mainframelike systems for missioncritical applications where redundancy and. Intel itanium processor reference manual for software. However, the itanium is new so os developers will need to familiarise themselves. Yet, customers continued demand greater application performance. A further fact contributing to abandoning risc processors was that between 1995 and 2000 cisc processors overtook the performance leadership from ciscs, as indicated in the next figure.
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