On Jul 24, 2012, at 9:07 AM, Brahmanand Jogai wrote:
I am trying to compile meep 1.2 for 64-bit Fedora version 17.
It compiles, but "make check" fails with the PML part. The other
tests seemed
to pass. I am concerned about this error, since I am working on a
3D photonic
crystal waveguide where the PML layer is important.
I would appreciate any suggestions. Attached below is the test-
suite.log file.
[....]
Checking thickness convergence of 1d PML...
refl1d:, 2, 0.235034
meep: pml doesn't scale properly with length.
This is weird...it doesn't just look like a difference in roundoff
errors or similar, since on my machine (64-bit Debian with gcc version
4.4.5) the corresponding output line is
Checking thickness convergence of 1d PML...
refl1d:, 2, 5.39147e-10
refl1d:, 4, 8.42461e-12
....
What version of gcc are you using? (run "g++ --version"). Can you
try recompiling Meep with
make distclean
./configure --enable-debug
make
and then re-run the PML test
cd tests
make pml
./pml
? I want to check whether this is a compiler-optimization bug, and
turning off optimization usually helps check for that.
--SGJ
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