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  2. Branch predictor - Wikipedia

    en.wikipedia.org/wiki/Branch_predictor

    Branch prediction attempts to guess whether a conditional jump will be taken or not. Branch target prediction attempts to guess the target of a taken conditional or unconditional jump before it is computed by decoding and executing the instruction itself. Branch prediction and branch target prediction are often combined into the same circuitry.

  3. Predication (computer architecture) - Wikipedia

    en.wikipedia.org/wiki/Predication_(computer...

    Elimination of unnecessary branch instructions can make the execution of necessary branches, such as those that make up loops, faster by lessening the load on branch prediction mechanisms. Elimination of the cost of a branch misprediction which can be high on deeply pipelined architectures.

  4. Branch (computer science) - Wikipedia

    en.wikipedia.org/wiki/Branch_(computer_science)

    Better branch predictors are developed and validated statistically by running them in simulation on a variety of test programs. Good predictors usually count the outcomes of previous executions of a branch. Faster, more expensive computers can then run faster by investing in better branch prediction electronics.

  5. Speculative execution - Wikipedia

    en.wikipedia.org/wiki/Speculative_execution

    This approach is employed in a variety of areas, including branch prediction in pipelined processors, value prediction for exploiting value locality, prefetching memory and files, and optimistic concurrency control in database systems. [1] [2] [3] Speculative multithreading is a special case of speculative execution.

  6. Branch target predictor - Wikipedia

    en.wikipedia.org/wiki/Branch_target_predictor

    Branch target prediction is not the same as branch prediction, which guesses whether a conditional branch will be taken or not-taken in a binary manner. In more parallel processor designs, as the instruction cache latency grows longer and the fetch width grows wider, branch target extraction becomes a bottleneck. The recurrence is:

  7. NetBurst - Wikipedia

    en.wikipedia.org/wiki/NetBurst

    The Intel NetBurst architecture allows branch prediction hints to be inserted into the code to tell whether the static prediction should be taken or not taken, while this feature was abandoned in later Intel processors. According to Intel, NetBurst's branch prediction algorithm is 33% better than the one in P6. [5] [6]

  8. Alpha 21264 - Wikipedia

    en.wikipedia.org/wiki/Alpha_21264

    Branch prediction is performed by a tournament branch prediction algorithm. The algorithm was developed by Scott McFarling at Digital's Western Research Laboratory (WRL) and was described in a 1993 paper. This predictor was used as the Alpha 21264 has a minimum branch misprediction penalty of seven cycles.

  9. Algorithm engineering - Wikipedia

    en.wikipedia.org/wiki/Algorithm_engineering

    the algorithm relies on the intricacies of modern hardware architectures like data locality, branch prediction, instruction stalls, instruction latencies which the machine model used in Algorithm Theory is unable to capture in the required detail,