[PyPy-issue] [issue528] (mostly) silent fp issues on mac

D.S. McNeil pypy-dev-issue at codespeak.net
Mon May 3 13:53:23 CEST 2010


New submission from D.S. McNeil <dsm053 at gmail.com>:

Tested on mac 10.5.8: 1.2 dist and a binary build of 72062 provided by arigo.

Version of nbody.py attached generates different answers for me on python
(2.5.4, 2.6.1) and pypy.  Table of results in comp.out.

What should be -0.169 varies all over the place: -0.171, -0.0678, 31.9,
ZeroDivisionError.
 
FWIW, running the code with optimizer=0 can generate

[regalloc] Not implemented operation: call_loopinvariant
RPython traceback:
  File "implement_8.c", line 81661, in send_loop_to_backend
  File "implement_7.c", line 220882, in Assembler386_assemble_loop
  File "implement_8.c", line 175259, in Assembler386__assemble
  File "implement_9.c", line 48835, in RegAlloc_walk_operations
  File "implement_10.c", line 29954, in RegAlloc_not_implemented_op
Fatal RPython error: NotImplementedError
Abort trap

----------
effort: ???
files: nbody.py
messages: 1712
nosy: dsm, pypy-issue
priority: bug
release: 1.2
status: unread
title: (mostly) silent fp issues on mac

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PyPy development tracker <pypy-dev-issue at codespeak.net>
<https://codespeak.net/issue/pypy-dev/issue528>
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