workshop2011 Topics

Workshop topics

Schedule

Sprints

generators

• who: Vitja, Stefan, Francesc (testing)

DefNode vs. CFuncDefNode split

• who: Stefan, Robert, Vitja

analyse_types() refactoring

• who: Dag, Stefan, Robert
• refactor into transform?

improve the with statement (low prio)

• who: Mark
• module scope, performance (profiling), etc.

line tracing (low prio)

• who: Mark
• enables coverage analysis, better pdb support

accelerating the stdlib with Cython

• who: -
• e.g. difflib, sre_compile, weak containers
• see recent python-dev thread

get Haoyu's Py3 patches merged

• who: Haoyu, Stefan

array syntax additions (Kurt's branch)

• who: Dag

documentation

• who: Francesc, Friedrich
• clean up
• check release notes against feature documentation, document "new" features
• compiler directives

what to do with multithreading/concurrency

• who: Dag, Friedrich, Francesc, Mark, Pauli

support for CPU/GPU/OpenMP/OpenCL

built-in lightweight Cython array type (+SIMD)

• who: Dag, Friedrich, Francesc, Mark, Pauli, Robert

standard interface for "unpackable" Cython functions for C callbacks

• who: Dag, Pauli

control flow analysis

• who: Vitja, Robert

improve type inference based on control flow analysis (discussion level)

• who: Vitja
• dependency graph for NameNodes

1.0

• who: Stefan, Dag, Robert, eventually everyone
• Python features
• language stability

simplify Cython language

• who: Dag, Robert, Haoyu

simplify cdef classes

• get them closer to Python classes in semantics

testsuite systematics

• who: ?
• accessibility: find test for feature x
• tags for tests

pure Python mode improvements

• who: Haoyu
• what's missing
• depends: "simplify Cython language"

make Cython functions more Python-like

• who: Mark, Francesc
• PyCFunction doesn't support Py3 function annotations
• cannot currently have attributes
• lack special Python function attributes (func*)

fwrap + scipy

• who: Dag, Pauli

Ensure Cython works with PEP 3118-enabled NumPy

• who: Dag, Pauli

Discussions

Cython for Scientific Computing

• Why isn't Cython (yet) as good as Fortran? (Dag)
• Lightweight arrays
• what to do with multithreading/concurrency
• CPU/OpenMP/etc.

Cython 1.0 and beyond

• What's missing?

• Language simplification

  • Deprecate cpdef?

• Templates

  • Standard templating preprocessor/support?
  • cdef floating f(floating x, floating y): ...

Development practices

• Internal cleanup
• Standards http://www.python.org/dev/peps/pep-0008/
• Documentation (move to main repo, cleanup)
• Tests (tags)