[Numpy-discussion] [PATCH] a fix for compiling numexpr with MSVC Toolkit 2003

David M. Cooke cookedm@physics.mcmaster...
Fri Mar 9 16:19:43 CST 2007

On Fri, 9 Mar 2007 16:11:28 +0000
faltet@carabos.com wrote:

> Hi,
> I've done a patch for allowing compiling the last version of numexpr with
> the MSVC Toolkit 2003 compiler on Windows platforms. You can fetch it
> from:
> http://www.pytables.org/trac/changeset/2514/trunk

Checked in. It didn't match up; you've got about 150 more lines in your
version than scipy's version.

> BTW, I understand now why Tim Hochberg was so worried about the time
> that it takes to compile numexpr on Win platforms. On my Pentium4 @ 2
> GHz, and using the MSVC Toolkit 2003, compiling numexpr takes 20 minutes
> aprox. (!). With the same machine and using GCC under Linux it takes no
> more than 1 minute. Mmmm, I think it's time to look at the MINGW
> compiler (GCC based).

Wow! I wonder if lowering the optimisation level would help.

|David M. Cooke                      http://arbutus.physics.mcmaster.ca/dmc/

More information about the Numpy-discussion mailing list