Search found 7 matches

by kawase
Thu Mar 06, 2014 1:41 pm
Forum: ROMS Problems
Topic: Inconsistent timestep reporting after restart under OpenMP?
Replies: 4
Views: 2064

Re: Inconsistent timestep reporting after restart under Open

Thank you for the info. Pity that :( I've switched to using shared-memory MPI for parallelism and that certainly is working....
by kawase
Sat Mar 01, 2014 8:39 pm
Forum: ROMS Problems
Topic: Inconsistent timestep reporting after restart under OpenMP?
Replies: 4
Views: 2064

Inconsistent timestep reporting after restart under OpenMP?

Am having a puzzling problem running a very simple (2-D), idealized tidal simulation on an Ubuntu box with a 6-core/12-hyperthread Intel processor. After a restart, the timestep count and the time reported on the standart output line switch erratically between the through count/time and ones from th...
by kawase
Mon Nov 27, 2006 2:54 pm
Forum: ROMS Problems
Topic: Time-dependent salinity boundary condition and MPI
Replies: 5
Views: 3968

Resolved

Forgot to mention that this problem has been resolved. It was indeed an IBM compiler issue and specifically the optimization flag (D'oh!) -O4. Downgrading to -O3 eliminated the problem.

I thank Bohyun Bahng for an alert spot on this. Mitsuhiro
by kawase
Thu Sep 14, 2006 6:28 pm
Forum: ROMS Tools and Techniques
Topic: Grid generation
Replies: 61
Views: 36272

Grid generation is definitely important to many of us working in regional applications, and is often the most time-consuming part of the model setup. I'm sure the ROMS community wants an effective curvilinear grid generator. We've come across "gridgen": http://www.marine.csiro.au/~sakov/ I haven't u...
by kawase
Tue Aug 15, 2006 9:33 pm
Forum: ROMS Problems
Topic: Time-dependent salinity boundary condition and MPI
Replies: 5
Views: 3968

Oh thanks! And sorry for a late reply, it's summer :wink: I was intrigued to hear that your results were dependent on domain partitioning. In our case, I tried several different domain decompositions, and results did not depend on them - the boundary value problem persisted no matter how I divided u...
by kawase
Mon Jul 24, 2006 5:30 pm
Forum: ROMS Problems
Topic: Time-dependent salinity boundary condition and MPI
Replies: 5
Views: 3968

Update - Thanks to David Darr, I had an opportunity to compile and run the setup on a Linux/Opteron cluster with a PGI compiler and LAM. The model ran without the problem mentioned. I'm suspecting this is an IBM compiler problem; next, I will try the Absoft Pro Fortran on our Apple cluster. If anyon...
by kawase
Fri Jul 14, 2006 3:18 pm
Forum: ROMS Problems
Topic: Time-dependent salinity boundary condition and MPI
Replies: 5
Views: 3968

Time-dependent salinity boundary condition and MPI

I'm running ROMS 2.1 for an embayment with time-dependent river discharge (point sources) and external salinity. Time stamps for the discharge and b.c. data coincide (monthly). When I run this setup on a cluster with MPI, the river discharge gets correctly interpolated between the past and the futur...