Minutes_2019_06_11

Attendees: Val, Todd, Ehsan, Siu, Stan, Stuart

0. Feature Discussion

• Lists, how do they work?

1. New issues

• #4159 and also note comment at #3907
  • What we want:
    • default behavior of not falling back; nopython=True is default.
  • Proposals:
    1. fallback to interpreter mode if pyobject types are used or typing fails
    2. builds on (1) with customized "fallback" callable.
       • accepted
• **** #4158 - "Reflected list" is being deprecated when there is no reflection?

  • concerns feels hypothetical
• #4156 - Potential memory leak starting with 0.43.1
  • confirmed leak
• #4146 - ImportError: cannot import name '_typeconv', Jetson Nano
  • likely user error
• #4144 - Why jit change the result ,actually the function is the same. Is this a bug ???
  • unknown problem. can't replicate
• #4143 - NotImplementedError. Problem in Numba's internals.
  • can't lower constant reflected list. known limitation
• #4139 - Please release wheels for 'cp27-cp27m-manylinux1-*'.

Already Closed

• #4150 - TypingError: Invalid use of Function(<built-in function contains>)
• #4142 - actually slow down the slicing the np.array
• #4141 - np.max() is not supported?
• #4140 - Numba CUDA kernels fail when passing 0-size cupy arrays

2. Open PRs

• #4157 - WIP: Support for np.flatnonzero
• **** #4155 - Make Parfors cacheable
  • Document how 3rd extension register C addresses.
• #4154 - String rfind() method support
• **** #4153 - Fix slice shape assignment in array analysis
  • merged #4088 and #4085 first
• **** #4151 - Typed list
• #4149 - [WIP] Implement SSA for the Numba IR
  • Siu reviewed and added tests. Suggests merging as is with inclusion of addition tests.

Already merged

• #4152 - fix status check in dict lookup

Old Active

4. Next Release: Version 0.45, RC=July 5, Final=July 12

• Type List
• Caching improvements requirement gathering
  • transitive dependency
  • bug related to storing runtime-only info
  • may punt on jitclasses
  • may punt on issues of (g)ufunc
  • future: pre-filled/package-able cache
    • open questions:
      • numba version pinning(?)
      • regen cache for different numba versions
      • regen at post-install