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| | PDA Encyclopedia - MIPS |
 | | The basic concept was to dramatically increase performance through the use of deep instruction pipelines, a technique that was well known, but difficult to implement. | | | Microprocessor without interlocked pipeline stages (MIPS) is a microprocessor architecture developed by MIPS Computer Systems Inc. | | | The MIPS CPU features a five-stage CPU pipeline to execute multiple instructions at the same time. |
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http://www.pdasupport.com/PDAencyclopediaMIPS.htm
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| | Alliance Of Overclocking Arts - Pipelines |
| | Pipelines are a way to increase the speed of the CPU by dividing the work of executing an instruction into a number of small individual tasks which can then be executed in parallel, rather like the way an assembly line works. | | | AMD uses a shorter pipeline than Intel, and so has a lower maximum speed, but because of the shorter pipeline, an AMD chip is able to do more work per clock cycle on a particular instruction than the Intel chip. | | | So, we have a CPU or GPU with a pipeline which is splitting our work up into smaller, "easier to chew" chunks of work. |
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http://www.aoaforums.com/forum/showthread.php?t=23543
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| | Art of Assembly: Chapter Three-5 |
| | The CPU is attempting to fetch the next byte from the prefetch queue for use as an operand, at the same time it is fetching 16 bits from the prefetch queue for use as an opcode. | | | At T=T6 the CPU completes the execution of the first instruction, computes the result for the second, etc., and, finally, fetches the opcode for the sixth instruction in the pipeline. | | | The CPU uses the data/address bus only when reading a value which is not in the cache or when flushing data back to main memory. |
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http://webster.cs.ucr.edu/AoA/DOS/ch03/CH03-5.html
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| | Untitled Document |
| | The reason is that we only have one ALU, and the result of the computation performed by that ALU is either a result that must be put away to an output register, or it is an address to be used to read or write memory. | | | In a typical RISC-style pipeline such as this one, ALU instructions will either take two register inputs or one register input and one immediate input, and output the result to a register. | | | A typical ALU instruction could be an add, a subtract or a logical operation such as an and or an or. |
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http://www.rivier.edu/faculty/amoreira/web/cs556a/hands/tut5
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| | [No title] |
| | The word addresses supplied by the CPU to the instruction cache and the byte addresses supplied by the CPU to the data cache are "virtual addresses" in that they refer to a location in the CPU's memory space without regard to their actual presence in physical memory. | | | As a result the cache and CPU are pipelined, so the effective allowed time for the data cache is 2250 ps (1850 ps-2100 ps for the instruction cache). | | | After the cache RAMs supply the data to the CPU, the only remaining task for the cache is to inform the CPU that the data is available and to re-synchronize with the CPU's pipeline. |
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http://www.ecse.rpi.edu/frisc/theses/MaierThesis/Chapter3.html
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| | A CPU History |
| | Hyper Pipelined Technology refers to Intel's expanding of the CPU pipeline from 10 stages (of the P6) to 20 stages. | | | The tradeoff in simply expanding this pipeline to a bunch of stages is that it takes the processor longer to recover from mistakes in the branch level prediction, being that it has to basically start over with 20 stages rather than a shorter 10-stage pipeline. | | | Pentium IV is a truly new CPU architecture and serves as the beginning to new technologies we will see for the next several years. |
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http://www.pcmech.com/show/processors/35/10
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| | Introduction to Pipelining |
| | Pipelining is the ability to overlap execution of different instructions at the same time. | | | of a CPU pipeline is the # of instructions completed per second. | | | storage locations were added to the datapath of the unpipelined machine to make it easy to pipeline. |
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http://www.cs.umbc.edu/~plusquel/611/slides/chap3_1.html
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| | iSYSTEM iC2000 in-circuit and onchip emulator |
| | Because the trace is bound to the CPU’s external bus, it records all instructions that the CPU reads, even if they are later discarded in the pipeline. | | | An example of a synchronous operation would be tracing program execution using hardware pipeline analysis reconstruction on the primary module and tracing data accesses on the secondary module. | | | A dedicated FPGA processes CPU’s address, data and control buses and simulates instruction propagation in the pipeline. |
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http://www.isystem.com/Products/Emulators/iC2000/PowerAnalyzer.htm
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| | STMicroelectronics Optimizing Code For Super10 |
| | In case of wrong prediction, the pipeline is cancelled and the whole instruction fetch must be restarted at the correct point of the program. | | | The figures are given for the best environment, it assumed that there is no dependency (pipeline, memory, operands,...), meaning for example the branch instructions are executed in between sequences without any break. | | | If an application does not have time critical interrupts but needs space in the internal memory, it can be useful to locate the vector table in external memory (this frees locations in the internal program memory and as there are few accesses, the penalty due to the external accesses is not so important). |
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http://www.st.com/stonline/books/ascii/docs/10582.htm
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| | Intel Cranks out new Pentium 4s - OSNews.com |
| | The G5 is a long-pipeline CPU with fixed-length 4-byte instructions. | | | With the 10-stage pipeline, the CPU waits for 10 clocks and executes only one instruction (the branch instruction). | | | The Athlon XP is a medium-pipeline CPU with variable-length instructions. |
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http://www.osnews.com/comment.php?news_id=5871
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| | Embedded News - SandCraft Expands SR71000 Microprocessor Family |
| | The implementation methodology of the CPU allows it to be rapidly migrated to more advanced processes and therefore higher clock frequencies, without necessitating changes to the pipeline architecture. | | | The processor has a nine-stage superscalar pipeline for high clock frequency, with a pipeline-bypass architecture optimized for minimizing instruction-independent stalls. | | | The Sysad bus enables the SR71000 family CPUs to interface to many existing and yet-to-be-released customer ASICs designed for the MIPS architecture, extending the productive life of those devices and leveraging the considerable investment by customers in such proprietary technology. |
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http://www.embeddedstar.com/press/content/2002/7/embedded4145.html
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| | [H]ardForum - (1) Dual Core CPU vs (1) Single Core CPU w/ Hyperthreading |
| | The place where you run into most problems with multitasking are not at the CPU level, but at much slower devices, like disk drives, user I/O. A P4 wtih HT has more than enough power to download a file, burn a CD, run an anti-virus check and play a game. | | | Especially in a NUMA setup, where CPUs have their own memory bus, and I/O connections, these now must be shared between the cores. |
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http://www.hardforum.com/showthread.php?t=871877
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| | WinMag |
| | Thermal management in personal computers --- and CPUs in particular ---used to be a fairly forgiving science with a wide range of acceptable, roughly-engineered solutions. | | | But there also are 100 percent software solutions for CPU cooling. | | | In running their chips far out of spec, overclockers face major thermal problems: The loss of CPU cooling for even a second or two (!) can totally fry a highly-overclocked chip beyond recovery. |
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http://www.winmag.com/columns/explorer/2001/06.htm
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| | Pipelines and Prescotts |
| | Increasing the pipeline of Prescott from twenty to thirty stages at the last minute is a pretty (add expletive of your choice) desperate move by Intel. | | | So a longer pipeline isn't the problem even if there is a problem. | | | Prescott represents a change in how Intel chemically makes CPUs. |
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http://www.overclockers.com/articles940
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| | Intel Pentium 4 Willamette Preview, Page 4/5 |
| | Due to the long pipeline of the P4 core, the Willamette might also not be well suited for programs requiring branch intensive operations like artificial intelligence and interactive gaming. | | | Along with the array of new CPU features, the Pentium 4 motherboard bus architecture is also designed for maximum performance. | | | Upon release, the Willamette should be the fastest desktop application CPU available, but might not prove to be the fastest gaming solution. |
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http://sysopt.earthweb.com/articles/p4/index4.html
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| | Hardware Analysis - The Megahertz Myth, Apple, AMD and Intel. |
| | The deep pipeline was considered by many as a bottleneck for the Pentium 4’s performance but Intel knew that it was a necessity if they wanted to ramp up clockspeed quickly beyond 1.5GHz. | | | Same applies to the branch prediction unit, if it mispredicts too often that'll also cut into the CPUs performance, so both the pipeline and the branch prediction units need to be designed and optimized to offer the best performance. | | | Granted, ever since Intel and AMD designed new and different x86 architectures for their CPUs, the clockspeed-equals-performance argument has become almost academic and isn't as clear-cut as we'd like, we're simply not comparing apples to apples. |
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http://www.hardwareanalysis.com/action/printarticle/1465
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| | CPU Pipeline Experiments Lab Lab #2 |
| | This creates a data dependency in D1 on the pipeline such that the processor would have to wait for the new value of D1 to be written back from the execution of the first instruction before it can execute the second instruction. | | | In the lab, run your program in two different settings: First, enable the brach cache by setting the Branch Cache Enable Bit of the CACR to a '1' so that the CPU is making use of the branch prediction cache. | | | Write a program that exhibits a series of around 1000 to 10,000 forward Bcc branches (this may be done in a loop, so you do not have to code 10,000 instructions). |
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http://www.ele.uri.edu/courses/ele408/lab2.html
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| | Welcome to AnandTech.com [ Article: Intel's Pentium 4 E: Prescott Arrives with Luggage] |
| | A CPU's pipeline is not a physical pipe that data goes into and appears at the end of, instead it is a collection of "things to do" in order to execute instructions. | | | Instead of telling the CPU where to go if the branch is taken, an indirect branch will tell the CPU to look at an address in a register/main memory that will contain the location of the instruction that the CPU should branch to. | | | Intel lengthened the pipeline on Prescott but they did not give the CPU any new execution units; so basically the chip can run faster to crunch more data, but at the same speeds there are no enhancements to work any faster. |
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http://www.anandtech.com/printarticle.html?i=1956
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| | [H]ardForum - AMD processor speeds vs. Intel ... |
| | Yes, well, if you mispredict and the wrong information is in the pipeline, you have to flush the current data out, and reload the right data. | | | In many respects, the P4 is a better, more forward-thinking design, but when most code is poorly, if at all optimized, the brute force approach the Athlon 64 provides is sometimes more efficient. | | | I would love to hear more about this.) Intel has since admitted SOI will eventually be implemented on their CPUs, and in the meantime, has begun using strained silicon, which is another way of reducing leakage. |
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http://www.hardforum.com/showthread.php?t=873674
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| | Paul Hsieh's 7th generation x86 CPU Comparisons |
| | The 21264 pipeline is structured with a maximum of 2 memory, integer, or FP instructions, from which any combination of executing 4 can be sustained per clock. | | | Of course, the goal is not to take advantage of this speculative undoing (back to the checkpoint instruction), but rather just to use it as a parachute to ensure robustness, in the hopes that in most cases for a given fragment of code, memory reordering is a valid thing to do. | | | Update: Also presented was the fact that the CPU uses a 4x100 Mhz Rambus memory interface. |
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http://www.azillionmonkeys.com/qed/cpujihad.shtml
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| | Short-Media Forums - pentium m |
| | In a CPU, a pipeline is like a factory assembly line—it executes program instructions one stage at a time. | | | One drawback of superpipelines is the penalty they impose when the CPU must branch to another part of the program (Say.. | | | Dont know if you have seen any of Intels ads for the Centrino package but that CPU is part of it. |
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http://www.short-media.com/forum/showthread.php?t=14230
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| | PCStats Forums - Colin goes down! |
| | and if you don't know it by now, the biggest disadvantage of a long instruction pipeline is that if there is an error in one instruction, the whole pipeline has to be flushed which means all the existing instructions that are still being processed in the pipeline have to be flushed out and resend. | | | gaming or distributed computing or rendering) a long pipeline processor can easily lose out to say a cpu that has much shorter pipline (less instructions being flushed out) that also breaks down the instructions like an assembly line. | | | thus it creates error in sending instructions to the cpu. |
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http://forum.pcstats.com/showthread.php?goto=lastpost&t=23128
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| | Tutorial 5 - EG 2004 |
| | Transferring data from the CPU to the GPU and vice-versa: | | | To achieve maximum high-performance rendering of high-quality images it is essential to know how to optimize the hardware graphics pipeline. | | | The presentation goes through some of those, giving a detailed analysis on how they manage to map to the graphics pipeline and leverage its computation horsepower. |
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http://eg04.inrialpes.fr/Programme/Tutorial/Tutorial-5/Tutorial-5.html
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| | Server Pipeline CPU Buyer's Guide |
| | We also have a quick-hitting CPU Buyer's Q&A that will assist you in your decision-making process by answering critical questions about Intel's new naming convention, future considerations, and more. | | | Regardless, CPUs aren't cheap, so it's important you understand what your needs are before you execute. | | | In recent years, the decision has become even more complex. |
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http://serverpipeline.com/168601865
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| | Assembler |
| | Modern assemblers, especially for RISC based architectures, such as MIPS, Sun SPARC and HP PA-RISC, optimize instruction scheduling to exploit the CPU pipeline efficiently. | | | Assemblers are far simpler to write than compilers for high-level languages, and have been available since the 1950s. |
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http://www.brainyencyclopedia.com/encyclopedia/a/as/assembler.html
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| | Cpu Pipeline |
| | Find, compare and buy Processors and other Computer Components products at Shopping.com. | | | LGA775 socket for Intel Pentium 4/Celeron CPU - Intel Pentium Processor Extreme Edition & Intel Pentium D Processor ready - Compatible with Intel 05B/ 05A and 04B/04A processors -... | | | Site map: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
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http://www.brodbandreports.com/cpu-pipeline.html
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| | Curriculum Vitae of Dr. Andries van Dam |
| | "Some Personal Recollections on Graphics Standards, " in ACM SIGGRAPH Computer Graphics Newsletter Standards Pipeline Column, (February 1997>. | | | "A Multi-Microprocessor Implementation of a General-Purpose Pipeline CPU" (with R. Ramseyer), in Proc. |
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http://www.cs.brown.edu/people/avd/long_cv.html
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| | [No title] |
| | OBJS = pipeline.o cpu.o HFILES = cpu.h CC = gcc -g -pedantic -O2 -Wall IFLAGS = -I. all: $(OBJS) $(CC) -o pipeline $(OBJS) pipeline.o: pipeline.c $(HFILES) $(CC) -c $(IFLAGS) pipeline.c cpu.o: cpu.c $(HFILES) $(CC) -c $(IFLAGS) cpu.c clean: rm -fr *.o pipeline core |
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http://www.cc.gatech.edu/classes/AY2002/cs2200_spring/hw/hw4/Makefile
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