|Version 27 (modified by kevinhammond, 5 years ago) (diff)|
Parallel Haskell Hackathon
Dates : 10-12 December
Location : St Andrews
Vladimir Janjic (Host), Hans-Wolfgang Loidl, Kevin Hammond, Mustafa Aswad, Henrique Ferreiro, Philip W Trinder, Patrick Maier, Abyd Al Zain, Mischa Dieterle, Thomas Horstmeyer, Jost Berthold, Simon Marlow (virtual),
Important: if you can, please prepare a setup of the latest sources in advance. A darcs repository has been set up on the server in Marburg, please read here how to get a working setup: Repository Briefing.
You should contact Mischa (dieterle@mathematik...) in order to get access, or check out read-only via http (which is of course not what we want later). If you have questions or problems, edit the page or mail Jost (berthold@mathematik...)
An Agenda Proposal is now on a separate page.
Topics to cover in the Hackathon:
- Short overview sessions on implementation internals (KH: these should not all be on the first afternoon!):
- GUM (Mustafa)
- Eden (Jost)
- Globus (Abyd)
- Migration/Load Balancing (Vladimir)
- ghc HEAD developments (Simon)
- GUM/Eden Compilation and Debugging (Vladimir?)
- GUM-6 port
- Merging GUM and Eden implementations
- Packing code
- GC interface
- Usage of new tracing infrastructure
- Development infrastructure
- Unified revision control (darcs)
- Debugging infrastructure
- Setup for automatic tests
- Parallel nofib-suite
- Planned extensions and applications
- Integration with GHC/SMP
- Integrating migration
- Globus interface
- pre-SCSCP GAP interface
- Micro-kernel/substrate approach to the RTS
- Nominating people in charge of sub-projects
- parallel nofib suite
- Eden/GUM code maintenance
- testing framework
- Prize for the most awkward bug fixed in the Hackaton.
Jost: I am non-competitive in this contest, since my task is to introduce them ;) HWL: Clearly you are at an disadvantage: you first have to introduce the bug; we don't have that problem;-)
- Tracing mechanism
- Unified repository, containing Eden and GUM code
- Common test platform
- List of people in charge of sub-projects
- Longer Term: Eden&GUM in GHC HEAD
Sub-tasks in Eden/GUM/GHC integration:
- Merge Eden/GUM repository
- Merge GUM into current Eden version
- Adapt for per-CPU/Core GC
- Integrating Vladimirs work (load balancing, migration)
Longer term system issues
- Update plan btw Eden/GUM and GHC-HEAD
- Community creation
- PhD Topic for Henrique
- Benchmarks/Parallel NoFib suite
- Launch GpH book
- Long Term: Build Franchise
- Agree on new Strategies module (rewrite applications)
- Visualisation tools (which?)
- Revisit design decisions for Eden/GUM
We prioritised setting up a common repository and Eden/GUM integration. Benchmarking and packaging were seen as longer term issues.
We agreed to use the GHC ticketing system, with some specific identification for Eden/GUM issues. We agreed to use a common darcs repository for Eden/GUM.
We need to find common ways of working to maximise our effort.
darcs for repositories
skype for communication
do we want dedicated mailing lists/IRC channels?
Who Does What
We agreed to setup hacker teams to work on different issues as follows
Repository: VJ + JB
Set up a common repository to hold GUM and Eden. Later, we should try to integrate this with the main GHC repository.
Integrating basic GUM code into Eden version 6.13: HWL?
Packing code (incl. tags): HWL+ MKA + JB
Scheduler: HWL + HF + PM + PWT
GC Interface + Global Addresses (with tags): HWL + VJ
Do we retain FETCHME closures or e.g. use a table
Tracing (agree format): KH + JB + MD + TH + HWL
We need to agree a format! We want tools to work on all formats. We agreed with SM to extend the threadscope event format, adding in new event types for distributed/more detailed events.
Thread Migration (packing TSOs, dealing with black holes, plus shark etc mechanisms): PWT + VJ
Visualisation Tools: HF + JB + KH + MKA + PWT
The visualisation tools need to work with the agreed format. We may need more detailed views and/or interactive versus publication tools.
Benchmarking: HF + MD + JB + everyone
We agreed to hold a discussion on benchmarking on Friday.