#1995: McLachlan constraint tests fail ------------------------------------+--------------------------------------- Reporter: hinder | Owner: Type: defect | Status: new Priority: major | Milestone: ET_2016_11 Component: EinsteinToolkit thorn | Version: development version Resolution: | Keywords: McLachlan constraints tests compiler optimization ------------------------------------+---------------------------------------
Comment (by anonymous):
Replying to [comment:8 hinder]:
Do the Intel constraints look OK if you disable as much optimisation as
possible? e.g. -O0, possibly -fp-model source. Intel 17 seems to be a bit dodgy still. Do you get the same problems with earlier versions of Intel?
With intel 17.0.2 and -O0, the problem is gone (using ML_ADMConstraints::ML_Ham / ML_Mom). There is however still a small difference to the gcc results, the relative difference in H is around 5e-5. Also, with intel 17.0.2 and -O3, there is significant difference when going from 80 to 40 MPI procs (4 threads each), H differs by around 6%.