* Upstream your changes/test results/documentation
* Blog about your work
* '''Note: Blogs will be marked as of Nov 21 11:59 pm'''
== Week 12 ==
* '''Remember: Final project submissions via blog are due 11:59 pm December 10.'''
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== Carried Forward from previous semester -- Kept here for potential copypasta ==
=== Friday (Jan 17) ===
* [[SPO600 Compiled C Lab]]
== Deliverables ==
* Blog your conclusion to the [[SPO600 Compiled C Lab]]
== Week 3 ==
=== Tuesday (Jan 21) ===
* [[Assembler Basics]]
=== Friday (Jan 24) ===
* Background information: [[SPO600 aarch64 QEMU on Ireland]]
* [[SPO600 Assembler Lab]]
=== Week 3 Deliverables ===
* Blog your conclusion to the [[SPO600 Assembler Lab]]
== Week 4 ==
=== Tuesday (Jan 28) ===
* [[SPO600 Assembler Lab|Assembler Lab]] review
* [[Inline Assembly Language]]
* [[Compiler Optimizations]]
=== Friday (Jan 31) ===
* [[Codebase Analysis Lab]]
=== Week 4 Deliverables ===
* '''Reminder:''' Week 1-3 blog posts are due for marking on Friday, January 31.
* Blog about the [[Codebase Analysis Lab]]
== Week 5 ==
=== Tuesday (Feb 4) ===
Platform-specific code is often utilized for '''Memory Barriers''' and '''Atomics Operations'''.
=== Friday (Feb 7) ===
==== Hack Session: Potential Project Analysis ====
Select a project from the [[Winter 2014 SPO600 Software List]] and perform these steps:
# Edit that page to put your name in the "Claimed by" column.
# Investigate the package to determine:
#* If the current version has been built for ARM (e.g., exists in the Fedora aarch64 port - fastest way to test is to use 'yum' inside the arm64 emulation environment on Ireland)
#* What the platform-specific code in the software does
#* Whether portable work-arounds exist
#* The need for an aarch64 port or for platform-specific code elimination
#* Opportunities for optimization
#* The amount of work involved in porting and optimizing, and your skills for performing that work
# Based on the result of your investigation, decide on your interest in the project.
#* If you wish to choose this project for yourself, place it on your row in the [[Winter 2014 SPO600 Participants|Participants]] page.
#* If you do not wish to choose this project, remove your name from the "Claimed by" column in the [[Winter 2014 SPO600 Software List|Software List]] page.
# Repeat until you have two packages.
{{Admon/note|Overload|It is strongly recommended that you choose two projects with a total scope sum of 0-1. If you wist to try a higher or lower sum, or more or less than two projects, please talk to your professor.}}
{{Admon/tip|RPM Packages|For sofware that is present in the rpmfusion repositories but not in Fedora, you can use <code>yumdownloader --source ''packagename''</code> to grab the source RPM and then examine it using the RPM tools. See [[RPM Packaging Process]] for information.}}
=== Week 5 Deliverables ===
* Blog about your two selected projects, including your detailed initial analysis of them.
** You may want to break this into a couple of posts - e.g., post about your first package while you're working on your second.
** Feel free to also blog about why you did '''not''' choose particular packages, too.
== Week 6 ==
=== Tuesday (Feb 11) ===
* Architecture-specific code for Performance
** Sometimes assembler is used in a C/C++ program for performance. However, modern versions of C/C++ (such as C++11) and recent compilers provide portable ways of accessing high-performance processor capabilities, such as Single Instruction/Multiple Data (SIMD) instructions (called "marketing names" such as SSE, Neon, MMX, 3DNow, or AltaVec on various processors).
** Linaro enginener Matthew Gretton-Dann gave a good presentation on [http://www.linaro.org/linaro-blog/2013/09/20/introduction-to-porting-and-optimising-code/ Porting and Optimizing Code] for aarch64. The vectorization portion, beginning at 28:10, provides a good introduction to SIMD and autovectorization using GCC on aarch64 (Note that the earlier portion of the presentation includes good information about Atomics).
*** [http://www.youtube.com/watch?v=epzYErIIx0Y YouTube Video] direct link
*** [http://www.linaro.org/assets/common/campus-party-presentation-Sept_2013.pdf Slides] direct link
** Note that in the presentation above, Matthew takes the code beyond portability without straying into assembler (e.g., using compiler-specific, architecture-specific intrinsics). It is possible to achieve almost all of the performance gains without becoming arch-specific, and most of those can be attained without becoming compiler-specific as well.
* For full details on the SIMD instructions in aarch64, refer to the [http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.genc010197a/index.html ARMv8 Instruction Set Overview], particularly section 5.7.
=== Week 6 Deliverables ===
* Complete your analysis of your two selected software projects (if you haven't already) - see [[#Week 5|Week 5]]. Blog in detail about your findings.
* Identify the upstream communities that develop and maintain the software you have selected to work on. Figure out how they are structured, how they communicate, how code is maintained, and how patches are accepted. Introduce yourself to each of the two communities (one for each of the two software projects you have selected). Blog about your findings.
== Week 7 ==
* Project Work
== Week 8 ==
* Project Work ([[User:Chris Tyler|Chris Tyler]] is at [http://www.linaro.org/connect-lca14 Linaro Connect]) this week.
* Aim at getting your code changes upstream to your communities
== Week 9 ==
=== Tuesday (March 11) ===
* Status updates
* Update from Linaro Connect
* Discussion of useful tools
** screen
** time
=== Friday (March 14) ===
* Comparison of Emulation
** QEMU
** Fast Model and Foundation Model
* Install and configure the Foundation Model
** [[:fedora:Architectures/ARM/AArch64/QuickStart|Fedora AArch64 Quick Start]]
** [http://www.linaro.org/engineering/engineering-projects/armv8 Linaro Foundation Model Instructions]
* Baseline Benchmarking
==== Resources ====
* Foundation Model
** [http://www.arm.com/products/tools/models/fast-models/ ARM Fast Models] - Note that "fast" here refers to the modelling approach, not execution speed!
* Benchmarking
** [http://www.tokutek.com/wp-content/uploads/2013/05/20130424-percona-live-benchmarking.pdf Benchmarking Talk by Tim Callaghan]
=== Week 9 Deliverables ===
* Set up the Foundation Model
* Upstream your proposed code changes
* Blog about your work
== Week 10 ==
=== Tuesday (March 18) ===
* Profiling with <code>gprof</code>
** Build with profiling enabled (<code>-pg</code>)
** Run the profile-enabled executable
** Analyze the data in the <code>gmon.out</code> file
*** <code>gprof ''nameOfBinary''</code> # Displays text profile including call graph
*** <code>gprof ''nameOfBinary'' | gprof2dot | dot | display -</code> # Displays visualization of call graph
Resources
* [https://sourceware.org/binutils/docs-2.16/gprof/ GProf Manual]
* [http://www.thegeekstuff.com/2012/08/gprof-tutorial/ Profiling with GProf]
=== Friday (March 21) ===
* Gather baseline statistics for your software
=== Week 10 Deliverables ===
* Blog your baseline benchmark results
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