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make -j 2 doesn't parallelize on version 18.0 on NT 4 2 CPU PPro system
- To: gnu-win32 at cygnus dot com
- Subject: make -j 2 doesn't parallelize on version 18.0 on NT 4 2 CPU PPro system
- From: David Story <story at sgi dot com>
- Date: Fri, 13 Jun 1997 16:00:37 -0700
- CC: story at sgi dot com
- Organization: Cosmo VRML Engineering, Silicon Graphics
I recently added a second PPro 200 CPU to my NT 4.0 Dell GxPro system,
and tried to use "make -j 2" to parallelize the build. We regularly do
this on our SGI systems using "smake" and it works wonderfully!
However, on NT 4.0, using bash as my shell, I get no parallelism -- at
least not in conjunction with recursive make files. (I can get
parallelism at the leaf directories if I go directly there and build
only one level at a time.)
I read four months worth of back e-mail on the Cygnus site, looked at
the release notes for 18.0, and read the manuals a couple times.
Has anyone successfully used make to do recursive builds with controlled
parallelism at each level? I tried "make -j -l 2.5" just to see if I
could get recursive parallelism that way....no joy.
If this doesn't work, I suppose I could change the defines in each leaf
Makefile to define -j 2 at leaf directories, but surely there's a true
parallel make in the works?
--
David Story, story@sgi.com Info on VRML: http://vrml.sgi.com
Cosmo VRML Engineering, SGI Info on Cosmo: http://cosmo.sgi.com
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