are distributed to a number of parallel processing units which reside within a processor complex. Each of these units fetches and executes instructions belonging to its assigned task. The appearance of a single logical register file is maintained with a copy in each parallel processing unit. Register results

Recent superscalar processors issue four instructions per cycle. These processors are also powered by highly-parallel superscalar cores. The potential performance can only be exploited when fed by high instruction bandwidth. This task is the responsibility of the instruction fetch unit. Accurate

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caused due to background tasks running on a mobile device and latency of execution of new tasks fetched from central server over time-varying wireless channel. Adopting a baseline model for wireless channel variations, rate of task execution, and congestion cost per unit time experience at a mobile

KNL model. Branch Prediction User-speci ed direct-mapped BHT with 2-bit damping counter. In-Order Issue Out-of-order execution model. Out-of-Order Issue Out-of-order execution model. Functional Units User given. Functional Units User given. EXE latency

The fetch-and-add (F&A) operation has been used effectively in a number of process coordination algorithms. In this paper we assess the power of fetch-and-increment (F&I) and fetch-anddecrement (F&D), which weview asrestricted forms of F&A in which the only addends permitted are ±1

Designing a modern microprocessor is a complex task that demands careful balance between cycle time, cycles-per-instruction, and area costs. In particular, the instruction fetch unit greatly affects the performance of a multi-issue processor. It must provide adequate bandwidth to sustain peak

In this paper, we present an architecture compiler based approach to reduce energy consumption in the processor. While we mainly target the fetch unit, an important side-effect of our approach is that we obtain energy savings in many other parts in the processor. The explanation is that the fetch

In order to meet the demands of wider issue processors, fetch mechanisms will need to fetch multiple basic blocks per cycle. The trace cache supplies several basic blocks each cycle by storing logically contiguous instructions in physically contiguous storage. When a particular basic block

for parallelism, need a high instruction width in order to reach an appropriate performance. Accurate branch prediction and low cache miss rate are two effective factors in the operation of the fetching unit. In this paper, we have designed and analyzed the fetching unit for a 4-way (4-issue) superscalar