Winter 2014 SPO600 Weekly Schedule
It's Alive!
This SPO600 weekly schedule will be updated as the course proceeds - dates and content are subject to change. The cells in the summary table will be linked to relevant resources and labs as the course progresses.
This SPO600 weekly schedule will be updated as the course proceeds - dates and content are subject to change. The cells in the summary table will be linked to relevant resources and labs as the course progresses.
Contents
Summary Table
| Week | Week of... | Tuesday - Class | Thursday - ALC/Lab | Deliverables |
|---|---|---|---|---|
| 1 | Jan 6 | Introduction to Software Porting, Portability, Benchmarking, and Optimization | How is Code Accepted? - Analyze code submissions in two separate open source projects | Blog a commentary on code reviews in two communities (Lab 1) |
| 2 | Jan 13 | Assembly language, Machine code, and Architecture Distinctions | Hello World - Compile a basic C program and analyze the resultant binary | Set up a Fedora system and the ARMv8 Foundation Model / Blog on binary analysis (Lab 2) |
| 3 | Jan 20 | Writing in Assembler & Intro to Aarch64 | Write Hello World in assembler - x86_64 and Aarch64 | Given an x86_64 assembler program with a loop, write an Aarch64 version (Lab 3) |
| 4 | Jan 27 | Non-portable code & Git and other SCMS | Software Selection - Introduce the Class to your selected Software Projects | Blog about your selected software projects |
| 5 | Feb 3 | Compiler Optimizations and Intrinsics | Compiler Optimization Lab - Observe GCC optimizations | Identify the machine-specific code in your selected projects / Blog observations on GCC optimizations (Lab 4) |
| 6 | Feb 10 | Porting - Adding platform-specific code for Aarch64 | Group hack session - Porting | Port your projects |
| 7 | Feb 17 | Portability - Removing platform-specific code | Group hack session - Portability | Remove platform-specific code from your projects |
| Study Week | Feb 24 | Study Week | ||
| 8 | Mar 3 | Project Work | Project Work | Get code into review |
| 9 | Mar 10 | Benchmarking (I) - Baseline, Control, and Repeatability | Group hack session - Baseline benchmarks | Produce baseline benchmarks for your software |
| 10 | Mar 17 | Benchmarking (II) - Change Impact | Group hack session - Impact of your Changes | Publish change impact stats for your software |
| 11 | Mar 24 | Optimizing Code | Group hack - Profiling and optimizing | Code review update |
| 12 | Mar 31 | Project Work | Project Work | Code review update |
| 13 | Apr 7 | Conclusion | Final Presentations | Code accepted upstream |
| Exam Week | Apr 14 | Exam Week - No exam in this course! | ||
Evaluation
| Category | Percentage | Evaluation Dates |
|---|---|---|
| Communication | 20% | Jan 31, Feb 28, March 31, April 13 |
| Quizzes | 10% | May be held during any class. A minimum of 5 one-page quizzes will be given. Lowest 3 scores will not be counted. |
| Labs | 10% | See deliverables column above. |
| Project work | 60% | Feb 28, March 31, April 13 |
Week 1
Tuesday (Jan 7)
- Introduction to the Problem
- Most software is written in a high-level language which can be compiled into machine code for a specific architecture. However, there is a lot of existing code that contains some architecture-specific code fragments written in Assembly Language.
- Reasons for writing code in Assembly Langauge include:
- Performance
- Atomic Operations
- Direct access to hardware features, e.g., CPUID registers
- Most of the historical reasons for including assembler are no longer valid. Modern compilers can out-perform most hand-optimized assembly code, atomic operations can be handled by libraries or compiler intrinsics, and most hardware access should be performed through the operating system or appropriate libraries.
- A new architecture has appeared: Aarch64, which is part of ARMv8. This is the first new computer architecture to appear in several years.
- There are over 1400 software packages/modules present in GNU Linux systems which contain architecture-specific assembly language code. Most of these packages cannot be built on Aarch64 systems without modification.
- In this course, you will:
- Select two software packages from a list compiled by Steve Macintyre of Linaro. Each of the packages on this list contains assembly language code which is platform-specific.
- Prepare a fix/patch for the software so that it will run on 64-bit ARM systems (aarch64). This may be done at either of two levels:
- Port - Add additional assembly language code for aarch64 (basic solution).
- Make Portable - Remove architecture-specific code, replacing it with compiler intrinsics or high-level code so that the software will successfully build on multiple platforms.
- Benchmark - Prove that your changes do not cause a performance regression on existing platforms, and that (ideally) it improves performance.
- Upstream your Code - Submitting your code to the upstream (originating) software project so that it can be incorporated into future versions of the software. This will involve going through a code review to ensure that your code is compatible with and acceptable to the upstream community.
- Optional: You can participate in the Linaro Code Porting/Optimization contest. For details, see the YouTube video of Jon "maddog" Hall and Steve Mcintyre at Linaro Connect USA 2013.
- Course details:
- Course resources are linked from the CDOT wiki, starting at http://zenit.senecac.on.ca/wiki/index.php/SPO600 (Quick find: This page will usually be Google's top result for a search on "SPO600").
- Coursework is submitted by blogging.
- Quizzes will be short (1 page) and will be held without announcement at any time. Your lowest three quiz scores will not be counted, so do not worry if you miss one or two.
- Course marks:
- 60% - Project Deliverables
- 20% - Communication (Blog and Wiki writing)
- 20% - Labs and Quizzes
- Friday classes will be held in an "Active Learning Classroom". You are encouraged to bring your own laptop to these classes.
- For more course information, refer to the SPO600 Weekly Schedule (this page), the Course Outline, and SPO600 Course Policies.
Friday (Jan 10)
Bring Your Laptop
Friday classes are held in a Active Learning Classroom. If you have a laptop or other device with an HDMI or VGA output (such as a smartphone!) please feel free to bring it.
Friday classes are held in a Active Learning Classroom. If you have a laptop or other device with an HDMI or VGA output (such as a smartphone!) please feel free to bring it.
- SPO600 Code Review Lab
- Start thinking about how you want to set up your SPO600 Software
Week 1 Deliverables
- Set up a blog and add it to Planet CDOT.
- Blog your conclusion to the SPO600 Code Review Lab.
- Add yourself to the Winter 2014 SPO600 Participants page (leave the projects columns blank).
- Sign and return the Open Source Professional Option Student Agreement.
