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Instruction level parallelism with software approaches ppt templates: >> http://jqx.cloudz.pw/download?file=instruction+level+parallelism+with+software+approaches+ppt+templates << (Download)
Instruction level parallelism with software approaches ppt templates: >> http://jqx.cloudz.pw/read?file=instruction+level+parallelism+with+software+approaches+ppt+templates << (Read Online)
Technical Report, HPLabs HPL-93-43, Jun VLIW at IBM Research Intel and HP hope to speed CPUs with VLIW technology that's riskier than RISC, Dick Pountain Hardware and Software Trace Scheduling ILP open problems Computer Architecture A Quantitative Approach, Hennessy & Patterson, 3rd edition, M Kaufmann.
Data dependence conveys: ? Possibility of a hazard. ? Order in which results must be calculated. ? Upper bound on exploitable instruction level parallelism Examples. ? OR instruction dependent on DADDU and DSUBU. ? Assume R4 isn't used after skip. ? Possible to move DSUBU before the branch. •. Example 1:.
4.1 Instruction Level Parallelism: Concepts and Challenges. 4.2 Overcoming Data Software pipelining and trace scheduling. 4.5 4.7 Studies of ILP. ILP is the principle that there are many instructions in code that don't depend on each other. That means it's possible to execute those instructions in parallel. This is easier
Instruction-Level Parallelism (ILP). – Overlap the execution of instructions to improve performance. • 2 approaches to exploit ILP. 1. Rely on hardware to help discover and exploit the parallelism dynamically. – Pentium 4, AMD Opteron, IBM Power. 2. Rely on software technology to find parallelism, statically at compile-time.
15 Oct 2014 A presentation about the ILP, its limitations and applications in today's architectures.
HW Support for More ILP X A = B op C Avoid branch prediction by turning branches into conditionally executed instructions: If (X) then A = B op C else NOP If false, then neither store result nor cause exception Expanded ISA of Alpha, MIPS, Presentation on theme: "ILP: Software Approaches"— Presentation transcript:.
Outline Basic Compiler Techniques for Exposing ILP Static Branch Prediction Static Multiple Issue: The VLIW Approach Hardware Support for Exposing More Parallelism at Compiler Time H.W verses S.W Solutions. Presentation on theme: "Exploiting ILP with Software Approaches"— Presentation transcript: 1 Exploiting
Chapter 4. Exploiting Instruction-Level Parallelism with Software Approaches. ???. ??????????. November 2004. EEF011 Computer Architecture. ?????
A Quantitative Approach, Fifth Edition Possibility of a hazard; Order in which results must be calculated; Upper bound on exploitable instruction level parallelism Examples. OR instruction dependent on DADDU and DSUBU. Assume R4 isn't used after skip. Possible to move DSUBU before the branch. Introduction.
Every branch has two separate prediction bits. First bit: the prediction if the last branch in the program is not taken. prediction rates than 2-bit scheme – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: c585a-ZDc1Z.
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