open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello,

When I use the lagrangian drifts program I often get the following error message: "forrtl: error <72>: floating overflow".

It doesn't seem to be related to the length of the sequence between DEBLAG and FINLAG.

Any advice would be very much appreciated.

Best regards.

Alexis

Hello,

We would need to have your files to rune the case. This option is seldom used and there may be an overlooked problem.

With best regards,

Jean-Michel Hervouet

Dear Jean-Michel Hervouet:

I have another problem on simulation with Lagrangian drift, with basic settings according to the manual,I got an error message as shown in the 'error.PNG' which indicates that 'NOMB NOT IN RANGE'. I have checked the number of DEBLAG and FINLAG and I think they are ok. Really don't understand what NOMB means...
Could you please give me a hint, thanks very much.

with best regard.

Hello,

There are two problems:

1) Lagrangian drifts do not work in parallel yet. We hope to do this this year. The tracking in parallel is done but we still have some work for the book-keeping of particles by processors (this has to be done for the oil spill model and algae).

2) The subroutine that issues the message is org_charac_type1 of version 6.2 and has to be corrected (the test IF(NOMB.GT.0).AND... must be replaced by IF(NOMB.GE.0.AND...) to allow the fact that the number of interpolated functions may be 0 (as in the case of tracking only without interpolation at the foot of characteristics), this is what we did in the version 6.3 that is being prepared.

Sorry for the inconvenience...

Jean-Michel Hervouet