Re: [Bug-gsl] msadams.c:973 aborts with GSL_ESANITY

[Michael Kaufman]

With the block placed at line 336, this line does _not_ appear in the 
output (and it still trips).

And yes, I made sure that I did get this changed version compiled and 
linked.

M

PS: In my code, I replaced the default error handler with this:

static void msadams_error_handler(const char *reason, const char *file,
                                  int line, int gsl_errno)
{
  bool doabort = true;

  if (gsl_errno == GSL_ESANITY) doabort = false;

  fprintf(stderr, "GSL error [%d] %s:%d : %s\n", gsl_errno, file, line, 
reason);

  if (doabort) abort();
}

If I don't replace the default error handler, the program aborts with 
GSL_ESANITY just as before, even with your change to 
msadams_failurehandler().


On 10/15/17 4:51 AM, Tuomo Keskitalo wrote:
> Hi,
>
> can you please test add this following snippet of code to end of 
> function msadams_failurehandler(), just before "return GSL_SUCCESS;" and 
> try behavior again, thanks! You should see that line printed in output. 
> Does it still crash? PS. I created bug report, this is [bug #52230].
>
>    if ((int)state->ordprev - (int)ord >= 2)
>      {
>        printf("TKDEBUG: MSADAMS ORDER CHANGE: ord %d ordprev %d\n", 
> (int)ord, (int)state->ordprev);
>        msadams_reset (vstate, dim);
>      }
>
>
> On 09.10.2017 15:52, Michael Kaufman wrote:
> > > Thanks! Looks like the solver hits a bump while accelerating on a 
> > > high gear. That should not be a problem, though. I'll take a look at 
> > > the code, but it will take time.
> > >
> > > Meanwhile, if you have time, you can add "#define DEBUG" in the 
> > > beginning of msadams.c and recompile GSL. This should make msadams 
> > > print out _lots_ of debug info and data, that would help decipher 
> > > this issue. Interesting stuff happens between t=5116.13 and t=5116.27.
> >
> > Yeah, wasn't quite expecting a 1 GB output file. Attached is a 
> > truncated section that has the steps in question. I've prefixed 
> > "PROGRAM" to the output lines that are not coming out of msadams.c
> >
> > M