On Wed, 4 Oct 2006, Jonathan Myers wrote:
All,
Today we finally got to the bottom of the confusion regarding flopsie, the
CPU resource consumer. A while ago I found that it was not behaving nearly
as well as when Tim had originally tested it, and that it was much closer to
the speed he had seen when it was compiled as a command-line application than
when it was a shared object file attached to Python.
Now we have discovered that it will behave the way Tim had seen in the past,
as a Python extension, if you are using icc v. 8.1 to compile it, not icc v.
8.0, which is the default for TeraGrid. To get yourself using icc v. 8.1,
add
Hi Jon,
For quite a while now (weeks really) we have been using this setting
in the ~/.soft (as per Robyn's spec) and thus compiling flopsie with the
8.1 icc. We were then placing the flopsie binary in the PATH. (Thus, it
was not compiled as a Python extension.)
Is this consistent with the theory on the performance results ?
Greg
+intel-c-8.1.035-f-8.1.031-r1
to your ~/.soft file, then log back in.
Now you can update apps/Consumer to r. 560 and then run
./setup build
./setup install --lsst-devel
and you won't have to bother with make or copying anything to your bin dir.
I'm testing it now to make sure everything works and hopefully establish
whether or not the speedup is appreciable enough to make a difference for
DC1.
-Jon
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