CPU that switches between threads of execution on every cycle
A barrel processor is a CPU that switches between threads of execution on every cycle. This CPU design technique is also known as "interleaved" or "fine-grained" temporal multithreading. Unlike simultaneous multithreading in modern superscalar architectures, it generally does not allow execution of multiple instructions in one cycle.
Like preemptive multitasking, each thread of execution is assigned its own program counter and other hardware registers (each thread's architectural state). A barrel processor can guarantee that each thread will execute one instruction every n cycles, unlike a preemptive multitasking machine, that typically runs one thread of execution for tens of millions of cycles, while all other threads wait their turn.
A technique called C-slowing can automatically generate a corresponding barrel processor design from a single-tasking processor design. An n-way barrel processor generated this way acts much like n separate multiprocessing copies of the original single-tasking processor, each one running at roughly 1/n the original speed.[citation needed]
automatically generate a corresponding barrelprocessor design from a single-tasking processor design. An n-way barrelprocessor generated this way acts much like...
A barrel or cask is a hollow cylindrical container with a bulging center, longer than it is wide. They are traditionally made of wooden staves and bound...
thread to be executed at a time. Barrelprocessor Symmetric multiprocessing Superthreading with a multithreaded processor Silberschatz, Abraham (2012). Operating...
supercomputer product, named MTA, featured interleaved multi-threading, i.e. a barrelprocessor. It also had no data cache, relying instead on switching between threads...
In computing, a vector processor or array processor is a central processing unit (CPU) that implements an instruction set where its instructions are designed...
frequency of interleaved issues. Fine-grained multithreading—such as in a barrelprocessor—issues instructions for different threads after every cycle, while...
multithreading processing classifies the HEP as a barrelprocessor. The hardware implementation of the HEP PEM was emitter-coupled logic. Processes were classified...
similar process called barreling, or barrel finishing, works upon the same principles. Tumbled stones are made with rock tumblers in a process very similar...
A gun barrel is a crucial part of gun-type weapons such as small firearms, artillery pieces, and air guns. It is the straight shooting tube, usually made...
A barrel shifter is a digital circuit that can shift a data word by a specified number of bits without the use of any sequential logic, only pure combinational...
use a general purpose graphics processing unit (GPGPU) as a modified form of stream processor (or a vector processor), running compute kernels. This...
register sets and thus 128 threads per CPU/ALU. All MTAs to date use a barrelprocessor arrangement, with a thread switch on every cycle, with blocked (stalled)...
for helical grooves machined into the internal surface of a firearms's barrel for imparting a spin to a projectile to improve its aerodynamic stability...
consistent the entire length of the barrel ensuring better mixing and little to no pressure build up. The Continuous Processor works by metering powders, granules...
level of the set of barrels or other containers used in the process; the liquid is traditionally transferred from barrel to barrel, top to bottom, the...
species of at least two other orders and contains the barrel field. The 'barrels' of the barrel field are regions within cortical layer IV that are visibly...
Cask strength (also known as barrel proof/barrel strength) is a term used by whisky (sometimes spelt "whiskey" in Ireland and the United States) and rum...
cryptographic units in the T1, unlike general purpose processor from competing vendors of the time. The processor is available with four, six or eight CPU cores...
a 10 in (254 mm) barrel is available. The Mark XIX barrels are machined with integral scope mounting bases, simplifying the process of adding a pistol...
from these programs are read into the central processor registers and are executed by the central processor at scheduled intervals. The results are then...
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