The process of organizing statements to allow multiple processors to work on different portions of a loop is often referred to as data dependencies and control dependencies.
12.
But, because the data dependencies of speculative multithreading, and the necessity to manage inter-thread dependent data, hardware implementation must be taken into consideration.
13.
When an instruction has no data dependencies, that is, both of its operands are ready, the respective warp is considered to be ready for execution.
14.
This linear power model uses five performance events as follows : Instruction Executed, Data Dependencies, Instruction Cache Miss, Data TLB Misses, and Instruction TLB Misses.
15.
The sequential limits on parallel performance dictated by Amdahl's theorem also do not apply in the same way, because data dependencies are implicitly handled by the programmable node interconnect.
16.
The " execution window " follows the sequential order of the von Neumann architecture, however within the window, instructions are allowed to be completed in data dependency order.
17.
Pipelining does, however, introduce the possibility for a situation where the result of the previous operation is needed to complete the next operation; a condition often termed data dependency conflict.
18.
However, in a pipeline, when operands are fetched for the 2nd operation, the results from the first will not yet have been saved, and hence a data dependency occurs.
19.
However with register renaming most compiler register assignments are reallocated dynamically by hardware at runtime into a register bank, allowing the CPU to break false data dependencies and thus easing pipeline hazards.
20.
Reservation stations take on the responsibility of waiting for operands in the presence of data dependencies and other inconsistencies such as varying storage access time and circuit speeds, thus freeing up the functional units.
