Embedded Computer Architecture5SAI0

Multi-CoreProgramming and Design Space Exploration

Lab Assignment 1

Luc Waeijen16 Nov 2015

Multi-Core Assignment● Provided

–Sequential AES implementation

● Goal–Tune application and multi-core x86 system to achieve

lowest Energy-Delay-Area Product (EDAP)

● Design Space–Number of Cores–Cache levels and sizes–Reorder buffer size–Functional units–...

Tools of the Trade

● Sniper Sim

Tools of the Trade

● Sniper Sim–Interval Simulator–Tool to analyze performance of multi-core systems–Cores themselves are modeled on a functional level–Memory, number of cores and frequency (i.e. the

system level) can be configured

●McPat–Integrated Power, Area and Timing modeling framework–Integrates with Sniper Sim toolflow

● OpenMP–Framework to parallelize source for multicore platforms

McPat

How to get started

● Check the website:

http://www.es.ele.tue.nl/~mwijtvliet/5SIA0_MC/

● Follow the preparation steps on the website

● N.B. Extract the application source in the correct directory!! Sniper Sim uses relative paths in it's Makefiles!!

● READ the guidelines page

● For the tunable parameters, check the sniper-manual (in particular chapters 5 & 6).

● The website also explains how to extract the energy, delay and area metrics from the tools

Make sure you understand what you tune!

● Read the sniper sim manual to understand the configuration options (http://snipersim.org/documents/sniper-manual.pdf)

● Procedure (for report):– Profile the application, identify bottlenecks– Try to improve the mapping/system

● Document what you tried and what you were expecting– Show the results. Did your solution work? If not, try to

explain why.

● Try to obtain the minimum Energy-Delay-Area-Product (EDAP).

Forum● Please use the forum to ask your questions!!

● (we do NOT answer questions by email)

● Use a topic title that captures your problem as accurately as possible (i.e. not 'code not working' or 'Help!!!').

● Before you ask, check if someone else had a similar issue. Also posts of previous year are there.

● Remember Google is your friend, it can typically provide answers much faster than the TAs

● If you want to talk to a TA, send us an email to make an appointment.

Forum● Please use the forum to ask your questions!!

● (we do NOT answer questions by email)

● Use a topic title that captures your problem as accurately as possible (i.e. not 'code not working' or 'Help!!!').

● Before you ask, check if someone else had a similar issue. Also posts of previous year are there.

● Remember Google is your friend, it can typically provide answers much faster than the TAs

● If you want to talk to a TA, send us an email to make an appointment.

Deliverables

● Report of max. 4 pages, > 11 pt font size. (Two column layout is allowed)

● Describe the steps taken to find the best Energy-Delay-Area-Product (EDAP).

● What did you tune, what was the expectation, did it work, why (not)?

● Report should be PDF and in English

Lets build some encryption!