Hi,

Ok, interesting. So likely it's not GSL optimization issue. What happens with a different ODE-solver on OSX?

Also, maybe check that the solver is not making a huge number of small steps (stiff problem?).

Not being able to reproduce(?) on Linux suggests something OSX specific, some linked math library maybe?

On 29.09.2017 22:08, Michael Kaufman wrote:
On 9/29/17 2:33 PM, Tuomo Keskitalo wrote:
Hello,

suggestions:
- make program print RNG seed values etc. so you can try to reproduce problems like this - compile GSL and your program without optimizations to see if it is compiler optimization issue or not

I have found an initial condition that trips the abort reliably on OSX (but not on Linux).

I have compiled both my program and GSL-2.4 with -O0 and will still trip the abort.

M



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