Thank you for the suggestion. Using the —no-native option, both the test script and my original numerical integration script run under vmprof on pypy.
Kris On Mon, Nov 19, 2018 at 1:12 PM Ronan Lamy <ronan.l...@gmail.com> wrote: > Le 17/11/18 à 15:39, Kris Kuhlman a écrit : > > I am using pypy to run numerical integration calculations with the > > arbitrary precision library mpmath (http://mpmath.org). > > > > I am using pypy2-v6.0.0-osx64 and version 1.0 of mpmath (from github). I > > install mpmath with pypy and use the native (python only) version; I am > > not using the gmp backend. > > > > I have noticed that sometimes seemingly small changes in my scripts > > result in big changes in runtime with pypy, and I was wondering if there > > were some jit options or settings I could change to improve things. > > Following advice from the pypy website, I tried using vmprof to profile > > one of my scripts. > > > > I installed vmprof into pypy using pip, starting with "pypy -m > ensurepip". > > > > First I tried to run one of my scripts with vmprof, which typically take > > <10 minutes to run, but it ran for a few hours and so I eventually > > killed it (it doesn't respond to ^C, so I have to put it into the > > background and kill it explicitly with the kill command). > > > > Then I tried just a small test script like the following: > > > > cat -> test.py > > import mpmath as mp > > print mp.pi > > ^D > > > > This runs fine from pypy as: > > > > $pypy test.py > > > >>3.14159265358979 > > > > > > > > but running this same script using vmprof and pypy as > > > > > > pypy -m vmprof -o output.log test.py > > > > > > uses 4GB of ram, 100% processor, and if left running will generate a > > output.log file of growing size (so I kill it). > > > > > > If I run the following: > > > > > > cat -> test2.py > > > > x = 3.14159 > > > > print x > > > > ^D > > > > > > vmprof runs quickly and generates a small output.log file (~400kb). As > > an aside, if I try to use the --web option, it hangs on "Uploading to > > http://vmprof.com..."; If I try to go to this website in my browser > > there is an error page about bad gateway from Cloudflare. > > > > > > I seem to be able to use mpmath with pypy just fine, but the combination > > of pypy, mpmath, and vmprof seems to not work. > > > > > > Any suggestions? I am not an experienced vmprof user. > > > I tried your test script on Linux and everything works as expected > locally. So I guess the issue is specific to OS X, or to your own system. > > Try using the --no-native option, as in 'pypy -m vmprof -o output.log > --no-native test.py'. That should disable most of the platform-specific > code, and it doesn't lose much information on pypy anyway. > > >
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