Ah, things get complicated :-(. I am working on openSUSE 11.3, 32 Bit
and Ubuntu 10.10 64 Bit. Additionally, I have SUSE Linux Enterprise on
IBM pSeries and IBM zSeries (Mainframe). Some times I even use gdal on
AIX.
I compile against gdal 1.7, no debug mode.
The important fact is that your builds work.
What about checking the check sum against a list of possible values ?
I have developed some test cases for my own and thought about
integrating them into test_gdal_retile.py. Unfortunately this is not
be possible if I use checksums because I cannot produce the correct
numbers.
For the moment, we can leave it as it is.
Christian
Quoting Even Rouault <even.roua...@mines-paris.org>:
Le samedi 18 décembre 2010 14:31:21, christian.muel...@nvoe.at a écrit :
Some last comment about the test case, the current source checks
test_gdal_retile_2()
ds.GetRasterBand(4).Checksum() != 35
ds.GetRasterBand(4).Checksum() != 35
If I run this on a Linux Intel 32 bit configuration, it has to be
ds.GetRasterBand(4).Checksum() != 283
ds.GetRasterBand(4).Checksum() != 122
Doing the same on a Linux AMD 64 Bit configuration, the values should be
ds.GetRasterBand(4).Checksum() != 283
ds.GetRasterBand(4).Checksum() != 126
It seems that the cecksum is dependent on the platform. Is this
desirable ? Could this cause some headaches later ?
Yes, this is a bit annoying.
I guess this is related to some compiler difference that impacts numerical
precision with the bilinear resampling. What is your OS and compiler versions
? Do you compile in debug or optimized mode ? Do you use your script against
GDAL trunk, or do you use it against GDAL 1.7 ?
35 works for me on Ubuntu 10.04 64bits, and it also works on all Windows
builds of Tamas (http://vbkto.dyndns.org/sdk/) that test 7 combinations of
32/64 bit and MSVC 1310, 1400, 1500 and 1600.
Cheers
Christian
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