The task of removing data dependencies can be delegated to the compiler, which can fill in an appropriate number of NOP instructions between dependent instructions to ensure correct operation, or re-order instructions where possible.
22.
The purpose of interleaved multithreading is to remove all data dependency stalls from the execution preemptive multitasking used in operating systems; an analogy would be that the time slice given to each active thread is one CPU cycle.
23.
We have a RAW ( Read After Write ) data dependency here, meaning that we must wait for instruction 1 to finish before executing instruction 2, as we require the correct value of r1 ( register 1 ).
24.
In a now-famous paper ( Maier, Mendelzon and Sagiv, TODS 1979 ), he introduced the chase, a method for testing implication of data dependencies that is now of widespread use in the database theory literature.
25.
PXA255 processor, for example, does not have direct performance events accounting for external RAM but Instruction Cache Miss, Data Cache Miss, and Number of Data Dependencies on processor can be used to estimate the memory power consumption.
26.
The boundaries of the polytopes, the data dependencies, and the transformations are often described using systems of constraints, and this approach is often referred to as a "'constraint-based "'approach to loop optimization.
27.
Advanced parsing and program slicing technology are used to scale analysis across large code bases to build an interactive, centralized model from the systems source code that brings visualization to component relationships, system structure, data dependencies and the business logic / rules embedded in the code.
28.
When execution resources would not be used by the current task in a processor without hyper-threading, and especially when the processor is stalled, a hyper-threading equipped processor can use those execution resources to execute another scheduled task . ( The processor may stall due to a cache miss, branch misprediction, or data dependency .)
29.
Bryon Moyer, in " Real World Multicore Embedded Systems ", states that Prism's objective is " to provide analysis and an exploration and verification environment for embedded software development using multicore architectures . " Moyer also describes the Prism interface as a set of integrated views in the GUI that display interactions between threads, data dependencies, cache analysis, along with the microprocessor pipeline.
30.
Despite x86 sharing the same mechanism with ARM that its GPRS can store any data individually, x86 will confront data dependency if more than three non-related instructions are stored, as its GPRs per file are too small ( eight in 32 bit mode and 16 in 64 bit, compared to ARM's 13 in 32 bit and 31 in 64 bit ) for data, and it is impossible to have superscalar without multiple register files to feed to its decoder ( x86 code is big and complex compared to ARM ).
