diff --git a/polly/www/content.css b/polly/www/content.css index 549b2a99ece8..1294af71748b 100644 --- a/polly/www/content.css +++ b/polly/www/content.css @@ -24,7 +24,7 @@ h1, h2, h3, tt { color: #000 } h1 { padding-top:0px; margin-top:0px;} h2 { color:#333333; padding-top:0.5em; } -h3 { padding-top: 0.5em; margin-bottom: -0.25em; color:#2d58b7} +h3 { padding-top: 0.5em; color:#2d58b7} li { padding-bottom: 0.5em; } ul { padding-left:1.5em; } diff --git a/polly/www/menu.html.incl b/polly/www/menu.html.incl index 46bdcdc1d72c..8b53de3a71a2 100644 --- a/polly/www/menu.html.incl +++ b/polly/www/menu.html.incl @@ -21,6 +21,7 @@ Optimizations Contributors TODO ChangeLog + Open Projects
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Open Projects

+ + + LLVM Polly keeps here a list of open projects which each of themselves would + be a great contribution to Polly. All of these projects are meant to be self + contained and should take a newcomer around 3-4 months of work. The projects + we propose are all suiteable as Google Summer of + Code projects. In case you are interested in a Google Summer of code + project make sure to reach out via the Polly mailing list early to + discuss your project proposal. + +

Integrate Polly with the LLVM vectorizers

+ Polly is not only a self-contained optimizer, but also provides a powerful + dependence and other program analyses. Currently, these analyses are only used + for our own optimizations. However, LLVM passes such as the loop vectorizer + would clearly benefit from having direct access to the available Polly + analyses. In this project, you would define in collaboration with the LLVM + community and considering existing dependence analysis interface a new + dependence analysis interface for Polly that allows passes to directly query + Polly analysis. Even though this project sounds straightforward at a first + glance, sorting out how to actually make this happen with the current and + the new pass managers, understanding how and when to invalidate the Polly + analysis and if dependence information can be computed on-demand make this + still a challenging project. If successful, this project may be a great way + to bring features of Polly to standard -O3 optimizations. + +

Register tiling to obtain fast BLAS kernels with Polly

+ Even though Polly is already able to speep up compute kernels significantly, + when comparing to the best BLAS routines we still are at least one order of + magnitude off. In this project you will investigate what is needed to close + this performance gap. Earlier investigations have shown that register tiling + is one important piece towards this goal. In combination with good tile size + models and some back-end work, this project is shooting to make common blas + operations, but also many non-blas kernels competitive with vendor math + libraries and outperforming the code icc/gcc currently generate. + +

Polly support for Julia - First steps

+ Julia is a new matlab style programming + language that provides C like performance for scientific computing. Even + though Julia also translates to LLVM-IR, parsing and optimizing Julia code + poses new challenges that currently prevent Polly from optimizing Julia + code despite the clear need for optimizations such as loop-tiling for Julia. + In this project you will -- starting from first proof-of-concept patches -- + integrate Polly into Julia and ensure that Julia code can benefit from the + same high-level loop optimizations as todays C code already does. If time + permits, making Polly's recent bound-check elimination logic work in Julia + code would allow the optimization of Julia code, even if save out-of-bound + checking is used. +

Interactive Polyhedral Web Calculator

+ At the core of Polly we use the isl math library. isl allows us to describe + loop transformations with relatively simple higher level operations while + still providing the full expressiveness of integer polyhedra. To understand + and describe the transformations we are performing it is often very convenient + to quickly script example transformations in a low-level language like python + and then subsequently. isl already comes with a python binding generator, with + pypyjs there is a python interpreter for the web and with emscriptem isl + itself can also be compiled to javascript. In this project you combine all + these components to obtain an interactive polyhedral web calculator, that uses + latest web technology to nicely illustrate the integer polyhedra you obtain. +
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