Super line distance

The technique(the Technology of the Hyper-Threading) is a new technique that the Intel releases in 2002.The Intel leads off on the XERON processor to get an application.In order to using that technique, the Intel will be the promoter that the head integrated a double logic processor the physical processor(in fact was on a processor to integrate two logic processor unit) of the unit in the world and it is said that this technique can raise 30% processor functions.
The so-called and super line distance technique is to make use of special hardware instruction and imitate two pit inside the logics of multi-threading processor inner part two physical chips, make the single processor be able to"enjoy use of" the calculating processor technique of the proceed together of the line distance class thus.Multi-threading technique can in supporting operate system and software of multi-threading, the valid to build up processor is in handling many mission, multi-threading of processing ability.
The super line distance technique can make the operate system perhaps apply several line distances of software, is circulate in a super line distance processor in the meantime up, two logic processors of its inner part share a set of processor performance unit and proceed together completion to add, multiply by, load etc. operation.Do so can make processor of the processing ability raise 30%, because of in same times in, applying procedure can well use each operation unit of chip.
For single line distance chip to say, although can also handle thousands instruction every second, at certain moment, it can carry on a processing to an instruction(single line distance), the result by all means makes the processor internal other processing the unit be idle.But"super line distance" technique can then make the processor synchronously and abreast handle more instructions and data(several line distances) at certain moment.Can say so, super line distance is 1 kind can "transfer" the CPU internal temporarily idle processing resources well of technique.
Is the super line distance to how work
In the process of handling several line distances, multi-threading processor each logic processor of the inner part can alone do to respond to to the interruption and be the first logic processor to follow a software line distance, the second logic processor also starts carrying on follow and handling to another a software line distance.
Moreover, in order not to the CPU processing resources conflict, be responsible for that logic processor which handles the second line distance, what it use is only to circulate the first line distance drive temporarily idle processing unit.For example:When a logic processor floats some operation(the float of usage processor order an operation unit) in the performance, another logic processor can carry out an addition operation.(usage processor of integral operation unit)So do, the utilization doubtless and consumedly raised processor inner part a processing unit with correspond of the data, instruction swallow the ability of vomit.
Carry out the five greatest prior conditions of super line distance
(1)Need CPU support
Formally support super line distance technical CPU's have Pentium43.06 GHzs, 2.40 Cs, 2.60 Cs, 2.80 Cs, 3.0 GHzs, 3.2 GHzs and Prescott processor currently, there is also the Xeon of parts of model numbers.
(2)Need main plank chip a set support
The main model number which formally supports a super line distance technical main plank chip a set includes an Intel 875 Ps, E7205, 850 Es, 865 PEs/G/P, 845 PEs/GE/GV, 845 Gs(B-stepping), 845 Es.875 Ps, E7205, 865 PEs/G/P, the 845 PEs/GE/GV chip set all can normally support a super line distance technical usage, but earlier 845 Es and the 850 E chip set as long as get stripe BIOS can work°out the problem of support.The SIS has SiS645 DXs(B version)s, SiS648(B version), SIS655, SIS658, SIS648 FX.The VIA has P4 X400 Aseses, P4 X600, the P4 X800.
(3)Need main plank BIOS support
The main plank manufacturer has to support a super line distance to just go in the BIOS.
(4)Need operate system support
Only the Windows XP professional version and follow-up edition support this function in the operate system of Microsoft currently, but the realization has been already canceled to the plan that the super line distance support on the Windows2000.
(5)Need to apply software support
Generally speaking, as long as can support many softwares of processors all can support a super line distance a technique, but actually such software combine not much, and incline toward the professional software of the sketch, video frequency processing...etc., the game software rarely has support.The applied software has Office 2000, the Office XP etc..Another edition with later the 2.4. xes of Linux kernel also supports a super line distance a technique.