Apple was the dominant purchaser of PowerPC chips from IBM and Freescale Semiconductor and even though they abandoned the platform, further development of AltiVec is continued in several Power Architecture designs from Freescale and IBM.

Apple was the primary customer for AltiVec until Apple switched to Intel-made, x86-based CPUs in 2006.

Motorola was the first to supply AltiVec enabled processors starting with their G4 line.

AltiVec was also used in some embedded systems for high-performance digital signal processing.

The PowerPC 970 ( G5 ) was the first IBM-manufactured CPU to implement VMX / AltiVec, for which IBM reused the old 7400 design they still had from the design they did with Motorola in Somerset.

The AltiVec unit was improved with the 7450 ; instead of executing one vector permute instruction and one vector ALU ( simple int, complex int, float ) instruction per cycle like 7400 / 7410, the 7450 and its Motorola / Freescale-followers can execute two arbitrary vector instructions simultaneously ( permute, simple int, complex int, float ).

Unlike SSE2, AltiVec supports a special RGB " pixel " data type, but it does not operate on 64-bit double precision floats, and there is no way to move data directly between scalar and vector registers.

AltiVec is a floating point and integer SIMD instruction set designed and owned by Apple, IBM and Freescale Semiconductor, formerly the Semiconductor Products Sector of Motorola, ( the AIM alliance ), and implemented on versions of the PowerPC including Motorola's G4, IBM's G5 and POWER6 processors, and P. A.

AltiVec is a trademark owned solely by Freescale, so the system is also referred to as Velocity Engine by Apple and VMX by IBM and P. A.

While AltiVec refers to an instruction set, the implementations in CPUs produced by IBM and Motorola are separate in terms of logic design.

AltiVec is also unique in its support for a flexible vector permute instruction, in which each byte of a resulting vector value can be taken from any byte of either of two other vectors, parametrized by yet another vector.

The last desktop microprocessor from IBM, the PowerPC 970 ( dubbed the " G5 " by Apple ) also implemented AltiVec with hardware similar to that of the PowerPC 7400.

Ultimately, the G4 architecture design contained a 128-bit vector processing unit labelled AltiVec by Motorola while Apple marketing referred to it as the " Velocity Engine ".

AltiVec offered a rich system and can be programmed using increasingly sophisticated compilers from Motorola, IBM and GNU, therefore assembly language programming is rarely needed.

Semi, although IBM has recently begun using AltiVec as well.

To date, no IBM core has included an AltiVec logic design licensed from Motorola or vice-versa.

Recent versions of the GNU Compiler Collection ( GCC ), IBM VisualAge compiler and other compilers provide intrinsics to access AltiVec instructions directly from C and C ++ programs.

This sparked the introduction of the much more powerful AltiVec system in the Motorola PowerPC's and IBM's POWER systems.

and AltiVec.

SIMD instructions can be found, to one degree or another, on most CPUs, including the IBM's AltiVec and SPE for PowerPC, HP's PA-RISC Multimedia Acceleration eXtensions ( MAX ), Intel's MMX and iwMMXt, SSE, SSE2, SSE3 SSSE3 and SSE4. x, AMD's 3DNow !, ARC's ARC Video subsystem, SPARC's VIS and VIS2, Sun's MAJC, ARM's NEON technology, MIPS ' MDMX ( MaDMaX ) and MIPS-3D.

Apple's APIs and development tools ( XCode ) were rewritten to use SSE2 and SSE3 instead of AltiVec.

AltiVec is a standard part of the new Power ISA v. 2. 03 specification.

Both AltiVec and SSE feature 128-bit vector registers that can represent sixteen 8-bit signed or unsigned chars, eight 16-bit signed or unsigned shorts, four 32-bit ints or four 32-bit floating point variables.

However, AltiVec provides a much more complete set of " horizontal " operations that work across all the elements of a vector ; the allowable combinations of data type and operations are much more complete.

Thirty-two 128-bit vector registers are provided, compared to eight for SSE and SSE2 ( extended to 16 in x86-64 ), and most AltiVec instructions take three register operands compared to only two register / register or register / memory operands on IA-32.

Often it is recognized that all the details of the pattern may not be essential to the outcome but, because the pattern was empirically determined and not developed through theoretical understanding, one is never quite certain which behavior elements are effective, and the whole pattern becomes ritualized.

Being somewhat delicate in health, at the age of sixteen he was sent to Southern Europe, for which he at once developed a passion, so that he spent nearly all of the following ten years abroad, at first in Italy, then in Greece, Egypt, Asia Minor, and Palestine.

The portrait that had developed, fragmentarily but consistently, was the portrait of a man to whom serious thinking is alien enough that the making of a decision inhibits, when it does not forestall, any ability to review the decision in the light of new evidence.

A prototype which fulfills the requirements was developed and thoroughly tested.

While there are now allegations of the withholding of `` favorable evidence developed at the hearing '' and a denial of a `` full and fair hearing '', no such claim was made by petitioner at any stage of the administrative process.

He was an ardent champion of the Brown & Sharpe Apprentice Program and personal counselor to countless able men who first developed their industrial talents with the company.

A project for the Air Force has been completed in which the NAIR infrared detecting device was developed for area monitoring of noxious or dangerous gases.

Except for a rich friendship with the painter, Chauncey Ryder who gave him the only professional instruction he ever had -- and this was limited to a few lessons, though the two artists often went on painting trips together -- Roy developed his art by himself.

Together they also developed a new form of voltaic cell in which the wooden trough was replaced by one of copper, thereby producing stronger currents.

Of interest is a recent announcement by Du Pont's Polychemicals Dept. of a new methyl methacrylate monomer designated as Monocite H 100, which was developed specifically for production of cast acrylic sheets for the sign and lighting industry.

In September, 1958, the patient developed generalized weakness and fatigue which was concurrent with exacerbation of his anemia ; ;

The same system, with minor modifications, was developed in Ruanda-Urundi under Belgian administration.

An objective scale was developed for rating school neighborhoods from these data.

Final ratings were made on the basis of a point system which was developed after studying the distributions of actual behaviors recorded and assigning weight values to each type of behavior that was deviant from the discovered norms.

Recently, for example, a paranoid woman's large-scale philosophizing, in the session, about the intrusive curiosity which has become, in her opinion, a deplorable characteristic of mid-twentieth-century human culture, developed itself, before the end of the session, into a suspicion that I was surreptitiously peeking at her partially exposed breast, as indeed I was.

Much which was in embryo in 1000 had become reasonably well developed by 800.

Greek civilization was swirling toward its great revolution, in which the developed qualities of the Hellenic outlook were suddenly to break forth.

Hardy's two productive decades were separated by forty years, yet between them he developed only in that he became more steadily himself -- it was a narrowing, not an expanding process.

What Parker and his contemporaries -- Gillespie, Davis, Monk, Roach ( Tristano is an anomaly ), etc. -- did was to absorb the musical ornamentation of the older jazz into the basic structure, of which it then became an integral part, and with which it then developed.

the verse of Beowulf or of The Iliad and The Odyssey was not easy to create but was not impossible for poets who had developed their talents perforce in earning a livelihood.

The major contributor was a shopping center with houses being added to the system as the subdivision developed.

special equipment required for registering respiration and for recording the contraction of smooth muscles under various conditions was developed by the Instruments Section ( Victor Jackman, W. C. Barnes, J. F. Reiss ) ; ;