I have seen the same, but I'm unsure about the real impact:
- I *guess* that nobody really tries to do HPC on armv5
- there are only 4 packages directly dependent on atlas (gsl, numpy, scipy and suitesparse) all other places where it gets installed is because it is an dependency of one of these. I think that something that depends on numpy often will be OK, even if the atlas install is somewhat broken.
- the build also mentions "-mfloat-abi=softfp", which I think is contrary to "NEON" or "vfpv3". unsure which flag "wins".
- I do not grasp how the building of atlas works. I think it tries to build a couple of different versions and then later selects the fastest of the working items.
- IIRC, you need some config files for your CPU to build
correctly. There is no such file for armv5 and I do not know how
to make one.
For RSEL8 we opted to not use atlas, but use openblas instead. For 7 I think that it works good enough to be used as a dependency for other package building, but indeed if you look closely it probably does not really work on an armv5.
Jacco
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I have seen the same, but I'm unsure about the real impact:
- I *guess* that nobody really tries to do HPC on armv5
- there are only 4 packages directly dependent on atlas (gsl, numpy, scipy and suitesparse) all other places where it gets installed is because it is an dependency of one of these. I think that something that depends on numpy often will be OK, even if the atlas install is somewhat broken.
- the build also mentions "-mfloat-abi=softfp", which I think is contrary to "NEON" or "vfpv3". unsure which flag "wins".
- I do not grasp how the building of atlas works. I think it tries to build a couple of different versions and then later selects the fastest of the working items.
- IIRC, you need some config files for your CPU to build correctly. There is no such file for armv5 and I do not know how to make one.