Mailman 3 July 2017 - pypy-dev

Error while integrating PyPy module in Yocto (Jethro branch) build.
by JAYMIN DABHI July 20, 2017

July 20, 2017

Hi All, I am trying to integrate PyPy in my current Yocto (Jethro branch) build for my i.MX6UL processor based development board. The board has "armv7a" (cortexa7) architecture. I am using "meta-pypy" layer from here (https://github.com/mzakharo/meta-pypy (https://github.com/mzakharo/meta-pypy)) and inherit the pypy package in my local.conf. But, it gives me error during bitbaking. I am bitbaking the "core-image-base". The error is as below : ERROR: Fetcher failure: Unable to find … [View More]

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(no subject)
by JAYMIN DABHI July 20, 2017

July 20, 2017

Hi All, I am trying to integrate PyPy in my current Yocto (Jethro branch) build for my i.MX6UL processor based development board. The board has "armv7a" (cortexa7) architecture. I am using "meta-pypy" layer from here (https://github.com/mzakharo/meta-pypy (https://github.com/mzakharo/meta-pypy)) and inherit the pypy package in my local.conf. But, it gives me error during bitbaking. I am bitbaking the "core-image-base". The error is as below : ERROR: Fetcher failure: Unable to find … [View More]

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cpyext performance
by Antonio Cuni July 19, 2017

July 19, 2017

Hello, recently I have been playing a bit with cpyext, so see if there are low haning fruits to be taken to improve the performance. I didn't get any real result but I think it's interesting to share my findings. The benchmark I'm using is here: https://github.com/antocuni/cpyext-benchmarks it contains a simple C extension defining three methods, one for each METH_NOARGS, METH_O and METH_VARARGS flags. So first, the results with CPython and PyPy 5.8: $ python bench.py noargs : 0.78 secs … [View More]

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Call rpython from outside
by Aleksandr Koshkin July 16, 2017

July 16, 2017

Sup, guys. I want my rpython function to be invokable from outside world specifically be python. I have wrapped my function with entrypoint_highlevel and it appeared in shared object. So far so good. As a first argument this function takes a pointer to a C struct, and there is a problem. I have precisely recreated this struct in RPython as a lltypes.Struct (not rffi.CStruct) and annotated by this object my entrypoint signature, but it seams that some fields of the passed struct are messed up (… [View More]

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Re: [pypy-dev] Static bytecode instruction optimization and pypy (JIT?) optimization
by rymg19＠gmail.com July 11, 2017

July 11, 2017

Part of the problem is behavioral changes. If you implement tail call recursion, your tracebacks change. Common subexpression elimination will also have subtle behavioral changes. -- Ryan (ライアン) Yoko Shimomura, ryo (supercell/EGOIST), Hiroyuki Sawano >> everyone elsehttp://refi64.com On Jul 9, 2017 at 8:11 PM, <Rocky Bernstein <rb(a)dustyfeet.com>> wrote: In looking at Python bytecode over the years, I've noticed that it does very little to no traditional static-compiler … [View More]

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Re: [pypy-dev] Static bytecode instruction optimization and pypy (JIT?) optimization
by William ML Leslie July 11, 2017

July 11, 2017

On 11 July 2017 at 18:22, Rocky Bernstein <rb(a)dustyfeet.com> wrote: > There's too much generalization and abstraction in the discussion at least > for me. So let me try to make this a little more concrete with real > examples. First note that, although Python, yes, does "optimize" "if 0:" > away, as soon as > you do something as simple as "debug = 0; if debug:" it is confounded. And > in my own experience I have done this. > Typically DEBUG is a global in the … [View More]

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Static bytecode instruction optimization and pypy (JIT?) optimization
by Rocky Bernstein July 11, 2017

July 11, 2017

In looking at Python bytecode over the years, I've noticed that it does very little to no traditional static-compiler optimization. Specifically: * Dead code elmination (most of the time) * Jumps to Jumps or Jumps to the next instruction * Constant propagation (most of the time) * Common subexpression elimination * Tail recursion * Code hoisting/sinking Yes, over the years more compiler optimization has been done but it's still pretty sparse. The little that I've looked at pypy, it is pretty … [View More]

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Emulate pypy SIGSEGV
by Pavlo Lavrenenko July 10, 2017

July 10, 2017

Hello, guys. Running PyPy 5.6.0 with GCC 4.8.5 20150623 (Red Hat 4.8.5-4) here. Occasionally PyPy terminates with signal 11 and a long stack consisting mostly of: #31 0x00007f0d4c26ce7d in ?? () from /lib64/libpypy-c.so If I had a proper code sample to reproduce the issue I would have submitted it but since I am literally chasing ghosts I am more interested in how to make PyPy throw SIGSEGV on purpose (the software hangs after one of its child processes dies with signal 11, I want to at … [View More]

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Re: [pypy-dev] Asking for help
by William ML Leslie July 3, 2017

July 3, 2017

On 3 July 2017 at 15:47, Meide Zhao <zhao.meide(a)gmail.com> wrote: > Thanks a lot Leslie. > > Can I use the newer version of Ubuntu like 16.04 or 17.04? Which Linux and > which version do you use? > Tannit (which does the automatic linux-64 builds) has GCC 4.8.2, so even something that old should work. I'm not sure if it differs from 12.04 in any other way. I build pypy regularly on Ubuntu 16.04 LTS (has gcc 5.4.0) as well as Debian Jessie (with gcc 4.9.2). -- … [View More]

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Asking for help
by Meide Zhao July 3, 2017

July 3, 2017

Hi all, I'm trying to build pypy from source on ubuntu 12.04 LTS but can't get it to work (see error messages below). Can someone help me and let me know the correct steps since I'm new to pypy? Thanks, Meide (1) The details for the ubuntu in virtualbox are as follows cat /etc/*-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu 12.04.3 LTS" NAME="Ubuntu" VERSION="12.04.3 LTS, Precise Pangolin" … [View More] ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu precise (12.04.3 LTS)" VERSION_ID="12.04" uname -a Linux ubuntu 3.8.0-29-generic #42~precise1-Ubuntu SMP Wed Aug 14 16:19:23 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux python -V Python 2.7.13 (2) install pypy dependencies via command: sudo apt-get install gcc make libffi-dev pkg-config zlib1g-dev libbz2-dev libsqlite3-dev libncurses5-dev libexpat1-dev libssl-dev libgdbm-dev tk-dev libgc-dev liblzma-dev mercurial (3) check out pypy source code: cd ~/pypy hg clone http://bitbucket.org/pypy/pypy pypy (4)build pypy cd ~/pypy/pypy/pypy/goal/ sudo ../../rpython/bin/rpython --opt=jit targetpypystandalone.py [platform:execute] gcc -c -O3 -pthread -fomit-frame-pointer -Wall -Wno-unused -Wno-address -DRPYTHON_VMPROF -O3 -DVMPROF_UNIX -DVMPROF_LINUX -DRPYTHON_LL2CTYPES -I/home/meide/pypy/pypy/rpython/rlib/rvmprof/src -I/home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared -I/home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace /home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.c -o /tmp/usession-default-0/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.o [translation:info] Error: File "/home/meide/pypy/pypy/rpython/translator/goal/translate.py", line 284, in main default_goal='compile') File "/home/meide/pypy/pypy/rpython/translator/driver.py", line 566, in from_targetspec spec = target(driver, args) File "targetpypystandalone.py", line 337, in target return self.get_entry_point(config) File "targetpypystandalone.py", line 368, in get_entry_point space = make_objspace(config) File "/home/meide/pypy/pypy/pypy/tool/option.py", line 35, in make_objspace return Space(config) File "/home/meide/pypy/pypy/pypy/interpreter/baseobjspace.py", line 441, in __init__ self.initialize() File "/home/meide/pypy/pypy/pypy/objspace/std/objspace.py", line 105, in initialize self.make_builtins() File "/home/meide/pypy/pypy/pypy/interpreter/baseobjspace.py", line 637, in make_builtins self.install_mixedmodule(mixedname, installed_builtin_modules) File "/home/meide/pypy/pypy/pypy/interpreter/baseobjspace.py", line 668, in install_mixedmodule modname = self.setbuiltinmodule(mixedname) File "/home/meide/pypy/pypy/pypy/interpreter/baseobjspace.py", line 507, in setbuiltinmodule None, None, ["Module"]).Module File "/home/meide/pypy/pypy/pypy/module/_vmprof/__init__.py", line 30, in <module> import pypy.module._vmprof.interp_vmprof File "/home/meide/pypy/pypy/pypy/module/_vmprof/interp_vmprof.py", line 14, in <module> my_execute_frame = _decorator(PyFrame.execute_frame) File "/home/meide/pypy/pypy/rpython/rlib/rvmprof/rvmprof.py", line 196, in decorate _get_vmprof() File "/home/meide/pypy/pypy/rpython/rlib/rvmprof/rvmprof.py", line 243, in _get_vmprof _vmprof_instance = VMProf() File "/home/meide/pypy/pypy/rpython/rlib/rvmprof/rvmprof.py", line 49, in __init__ self.cintf = cintf.setup() File "/home/meide/pypy/pypy/rpython/rlib/rvmprof/cintf.py", line 82, in setup **eci_kwds)) File "/home/meide/pypy/pypy/rpython/rtyper/tool/rffi_platform.py", line 94, in verify_eci configure(CConfig) File "/home/meide/pypy/pypy/rpython/rtyper/tool/rffi_platform.py", line 223, in configure res[key] = value.question(writer.ask_gcc) File "/home/meide/pypy/pypy/rpython/rtyper/tool/rffi_platform.py", line 555, in question ask_gcc("") File "/home/meide/pypy/pypy/rpython/rtyper/tool/rffi_platform.py", line 191, in ask_gcc try_compile_cache([self.path], self.eci) File "/home/meide/pypy/pypy/rpython/tool/gcc_cache.py", line 71, in try_compile_cache platform.compile(c_files, eci) File "/home/meide/pypy/pypy/rpython/translator/platform/__init__.py", line 54, in compile ofiles = self._compile_o_files(cfiles, eci, standalone) File "/home/meide/pypy/pypy/rpython/translator/platform/__init__.py", line 76, in _compile_o_files ofiles.append(self._compile_c_file(self.cc, cfile, compile_args)) File "/home/meide/pypy/pypy/rpython/translator/platform/posix.py", line 41, in _compile_c_file cwd=str(cfile.dirpath())) File "/home/meide/pypy/pypy/rpython/translator/platform/__init__.py", line 140, in _execute_c_compiler self._handle_error(returncode, stdout, stderr, outname) File "/home/meide/pypy/pypy/rpython/translator/platform/__init__.py", line 152, in _handle_error raise CompilationError(stdout, stderr) [translation:ERROR] CompilationError: CompilationError(err=""" /home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.c: In function ‘elf_add_syminfo_data’: /home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.c:448:8: warning: implicit declaration of function ‘__atomic_load_n’ [-Wimplicit-function-declaration] /home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.c:448:12: error: ‘__ATOMIC_ACQUIRE’ undeclared (first use in this function) /home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.c:448:12: note: each undeclared identifier is reported only once for each function it appears in /home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.c: In function ‘elf_syminfo’: /home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.c:493:12: error: ‘__ATOMIC_ACQUIRE’ undeclared (first use in this function) /home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.c: In function ‘backtrace_initialize’: /home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.c:958:2: warning: implicit declaration of function ‘__atomic_store_n’ [-Wimplicit-function-declaration] /home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.c:958:2: error: ‘__ATOMIC_RELEASE’ undeclared (first use in this function) /home/meide/pypy/pypy/rpython/rlib/rvmprof/src/shared/libbacktrace/elf.c:973:20: error: ‘__ATOMIC_ACQUIRE’ undeclared (first use in this function) """) [translation] start debugger... > /home/meide/pypy/pypy/rpython/translator/platform/__init__.py(152)_handle_error() -> raise CompilationError(stdout, stderr) (Pdb+) [View Less]

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