pitrou

C:\>conda create -p c:\t\env python=2.6 numpy llvmpy
Fetching package metadata: ...
Solving package specifications: .
Package plan for installation in environment c:\t\env:

The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    llvmpy-0.12.6              |           py26_0         4.9 MB

pitrou

import gc
import sys

import llvm.core as lc
import llvm.ee as le


# Cache plausible return values for sys.getallocatedblocks() - _base, to avoid
# allocating them later.
_int_pool = {}

pitrou

$ LANG=C wget https://www.openssl.org/source/openssl-1.0.1h.tar.gz
--2014-07-15 02:04:59--  https://www.openssl.org/source/openssl-1.0.1h.tar.gz
Resolving www.openssl.org (www.openssl.org)... 185.9.166.106
Connecting to www.openssl.org (www.openssl.org)|185.9.166.106|:443... connected.
ERROR: The certificate of `www.openssl.org' is not trusted.
ERROR: The certificate of `www.openssl.org' hasn't got a known issuer.

pitrou

building 'readline' extension
gcc -pthread -fPIC -Wno-unused-result -Werror=declaration-after-statement -g -O0 -Wall -Wstrict-prototypes -I./Include -I/home/antoine/miniconda3/envs/_build/include -I. -IInclude -I/usr/include/x86_64-linux-gnu -I/usr/local/include -I/home/antoine/miniconda3/conda-bld/work/Python-3.4.1/Include -I/home/antoine/miniconda3/conda-bld/work/Python-3.4.1 -c /home/antoine/miniconda3/conda-bld/work/Python-3.4.1/Modules/readline.c -o build/temp.linux-x86_64-3.4-pydebug/home/antoine/miniconda3/conda-bld/work/Python-3.4.1/Modules/readline.o
In file included from /home/antoine/miniconda3/envs/_build/include/readline/readline.h:36:0,
                 from /home/antoine/miniconda3/conda-bld/work/Python-3.4.1/Modules/readline.c:32:
/home/antoine/miniconda3/envs/_build/include/readline/rltypedefs.h:34:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
 typedef int Function ();
 ^
/home/antoine/miniconda3/envs/_build/include/readline/rltypedefs.h:35:1: warning: function decl

pitrou

### Keybase proof

I hereby claim:

  * I am pitrou on github.
  * I am pitrou (https://keybase.io/pitrou) on keybase.
  * I have a public key whose fingerprint is 2CC2 3EF0 90A2 8BAC 5DDC  885F 769B DC21 29C2 658C

To claim this, I am signing this object:

pitrou

from __future__ import absolute_import, print_function, division

import math

import numpy as np

from numba import jit, vectorize
from numba.utils import benchmark

pitrou

Haswell addition main loop:

.LBB0_15:
	vmovupd	-96(%rsi), %ymm0
	vmovupd	-64(%rsi), %ymm1
	vmovupd	-32(%rsi), %ymm2
	vmovupd	(%rsi), %ymm3
	vaddpd	-96(%rdx), %ymm0, %ymm0
	vaddpd	-64(%rdx), %ymm1, %ymm1
	vaddpd	-32(%rdx), %ymm2, %ymm2

pitrou

>>> print(type(a), a.dtype, a[:10])
<class 'numpy.ndarray'> [('x', '<i4'), ('y', '<f4')] [(0, 0.0) (1, 0.0) (2, 0.0) (3, 0.0) (4, 0.0) (5, 0.0) (6, 0.0) (7, 0.0)
 (8, 0.0) (9, 9.171498449005928e-41)]
>>> print(type(aa), aa.dtype, aa[:10])
<class 'numpy.core.records.recarray'> [('x', '<i4'), ('y', '<f4')] [(0, 0.0) (1, 0.0) (2, 0.0) (3, 0.0) (4, 0.0) (5, 0.0) (6, 0.0) (7, 0.0)
 (8, 0.0) (9, 9.171498449005928e-41)]
>>> %timeit numba_copy_x_to_y(a, b)
100000 loops, best of 3: 3.51 µs per loop
>>> %timeit numba_copy_x_to_y(aa, bb)
10000 loops, best of 3: 157 µs per loop

pitrou

// gcc avx.c -mavx -std=c99 -O2
// while true; do ./a.out; done > log
// analyze via np.genfromtxt, e.g. min, 10th percentile, median

#include <stdio.h>
#include <string.h>
#include <x86intrin.h>
#include <avxintrin.h>
#define N 5000

pitrou

// gcc avx.c -mavx -std=c99 -O2
// while true; do ./a.out; done > log
// analyze via np.genfromtxt, e.g. min, 10th percentile, median

#include <stdio.h>
#include <string.h>
#include <x86intrin.h>
#include <avxintrin.h>

#define N 3000