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hyperthreading

   Also found in: Acronyms, Wikipedia 0.06 sec.

(1) A high-performance computing architecture that simulates some degree of overlap in executing two or more independent sets of instructions. See Hyper-Threading.

(2) (Hyper-Threading) A feature of certain Pentium 4 chips that makes one physical CPU appear as two logical CPUs. It uses additional registers to overlap two instruction streams in order to achieve an approximate 30% gain in performance. Multithreaded applications take advantage of the Hyper-Threaded hardware as they would on any dual-processor system; however, the performance gain cannot equal that of true dual-processor CPUs.



Hyper-Threading Vs. Standard Modes
Applications must be multithreaded in order to take advantage of Hyper-Threading whether in single-core or dual-core machines.


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IDC believes that higher desktop processor ASPs enabled by HyperThreading technology and the new 800MHz front-side bus as well as mobile PC processor unit shipments and the higher ASPs of those units helped to compensate for modestly lower desktop PC processor unit shipments.
Concurrent's RedHawk Linux and SUSE(R) Linux Enterprise Real Time operating systems offer support for 32-bit and 64-bit processor architectures (Intel Xeon and AMD Opteron), guaranteed interrupt response time of less than 30 microseconds, high-resolution timer support for enhanced scheduling, user-level control of hyperthreading, and processor shielding, all within a single programming environment API.
SUSE Linux Enterprise Real Time offers support for 32-bit and 64-bit processor architectures (Intel Xeon and AMD Opteron), guaranteed interrupt response time of less than 30 microseconds, high-resolution timer support for enhanced scheduling, user-level control of hyperthreading, and processor shielding, all within a single programming environment API.
 
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