Bug#919189: Fwd: probabel FTBFS on arm64, likely due to Eigen 3 NEON code

2019-02-04 Thread L.C. Karssen
Dear all, As one of the developers of ProbABEL I can confirm this is a rounding error. We have had similar problems in the past. The test run by make is simply diff-ing the output of a test run with a 'known good' file. Back when ProbABEL was still actively developed, I tried my best to maintain

Bug#919189: Fwd: probabel FTBFS on arm64, likely due to Eigen 3 NEON code

2019-02-02 Thread Andreas Tille
On Sat, Feb 02, 2019 at 11:56:50AM +0100, Thierry fa...@linux.ibm.com wrote: > Hi, > > Thanks for pointing out that my analysis wasn't good - the arm patch > doesn't change anything for ppc64el (which make sense whatsoever) - the > problem on ppc64el is similar to the one on arm except the test va

Bug#919189: Fwd: probabel FTBFS on arm64, likely due to Eigen 3 NEON code

2019-02-02 Thread Thierry fa...@linux.ibm.com
Hi, Thanks for pointing out that my analysis wasn't good - the arm patch doesn't change anything for ppc64el (which make sense whatsoever) - the problem on ppc64el is similar to the one on arm except the test value are opposite ! ( which was confusing). So what do we need to do ? expect that someo

Bug#919189: Fwd: probabel FTBFS on arm64, likely due to Eigen 3 NEON code

2019-02-01 Thread Andreas Tille
Hi, I think these are just rounding errors due to different representation of floating point numbers. Relaxing the precision of the test would solve the problem (but I have no idea about the test suite and so do not know how to implement this). What I do also not understand why a fix that only o

Bug#919189: Fwd: probabel FTBFS on arm64, likely due to Eigen 3 NEON code

2019-02-01 Thread Thierry fa...@linux.ibm.com
Unfortunately the workaround mentioned for arm64 breaks ppc64el arch as compiling on buster fails with following error - what do we do ? Thanks BT check (recess model): prob vs. prob_fv OK 2c2 <