# run / config issues **URL:** https://forum.croco-ocean.org/c/run-issues/18.md [Latest](https://forum.croco-ocean.org/latest.md) · [Categories](https://forum.croco-ocean.org/categories.md) · [Tags](https://forum.croco-ocean.org/tags.md) --- ## [BLOW UP error on custom bathymetry dataset - Hamilton Harbour](https://forum.croco-ocean.org/t/blow-up-error-on-custom-bathymetry-dataset-hamilton-harbour/7671)
**Author:** [@kb1901](https://forum.croco-ocean.org/u/kb1901)\ **Replies:** 3\ **Last updated:** [June 30, 2026, 3:24pm UTC](https://forum.croco-ocean.org/t/blow-up-error-on-custom-bathymetry-dataset-hamilton-harbour/7671 "2026-06-30T15:24:39Z")
Hi, I’m using CROCO to study circulation in a small embayment in Ontario called Hamilton Harbour. It is roughly a 10km x 6km harbour in the shape of a triangle, and the resolution of the grid is 40 meters. I am using a … --- ## [CROCO NaNs at timestep 1](https://forum.croco-ocean.org/t/croco-nans-at-timestep-1/7653)
**Author:** [@Jellyfish](https://forum.croco-ocean.org/u/Jellyfish)\ **Replies:** 14\ **Last updated:** [May 19, 2026, 1:15pm UTC](https://forum.croco-ocean.org/t/croco-nans-at-timestep-1/7653 "2026-05-19T13:15:39Z")
Hello, I am running CROCO from an ini.nc file and the model becomes unstable immediately at timestep 1. Model output: STEP time\[DAYS\] KINETIC\_ENRG POTEN\_ENRG TOTAL\_ENRG NET\_VOLUME trd 0 2922.00000 1.937450459E-03 4.… --- ## [Monthly online forcing?](https://forum.croco-ocean.org/t/monthly-online-forcing/7649)
**Author:** [@nvogtvincent](https://forum.croco-ocean.org/u/nvogtvincent)\ **Replies:** 0\ **Last updated:** [April 27, 2026, 4:20pm UTC](https://forum.croco-ocean.org/t/monthly-online-forcing/7649 "2026-04-27T16:20:25Z")
Hi all, is there a ‘proper’ way to run CROCO in ONLINE mode with monthly forcing (i.e. one time slice per monthly file)? From my tests, it seems at least two time slices are required per file. I’ve found a hacky workarou… --- ## [READ\_INP ERROR while reading block with keyword 'restart'](https://forum.croco-ocean.org/t/read-inp-error-while-reading-block-with-keyword-restart/7646)
**Author:** [@cetinaheredia.p](https://forum.croco-ocean.org/u/cetinaheredia.p)\ **Replies:** 0\ **Last updated:** [April 22, 2026, 3:38pm UTC](https://forum.croco-ocean.org/t/read-inp-error-while-reading-block-with-keyword-restart/7646 "2026-04-22T15:38:49Z")
I am trying CROCO in my Mac for the first time. I was able to run the TEST BASIN but when trying to run a climatological configuration I get the following error message: READ\_INP ERROR while reading block with keyword ‘… --- ## [Curious behaviour with tide](https://forum.croco-ocean.org/t/curious-behaviour-with-tide/7640)
**Author:** [@emmanuelpoizot-droid](https://forum.croco-ocean.org/u/emmanuelpoizot-droid)\ **Replies:** 1\ **Last updated:** [April 22, 2026, 1:55pm UTC](https://forum.croco-ocean.org/t/curious-behaviour-with-tide/7640 "2026-04-22T13:55:20Z")
Dear all, I’ve got a problem with tides in my simulation. I noticed a curious behavior happening every midnight. A “waves” appears on each open boundaries of the domain exactly at 00:00 every days. See the two pictures… --- ## [Problems with Interanual and ONLINE](https://forum.croco-ocean.org/t/problems-with-interanual-and-online/833)
**Author:** [@AndresSepulveda](https://forum.croco-ocean.org/u/AndresSepulveda)\ **Replies:** 4\ **Last updated:** [February 19, 2026, 4:50pm UTC](https://forum.croco-ocean.org/t/problems-with-interanual-and-online/833 "2026-02-19T16:50:57Z")
Hi, I am doing an interannual run using ERA5 as BULK forcing with ONLINE. All files for a year have been downloaded and are in the DATA directory, however for month 4 I get this message: ONLINE\_GET\_BULK - ERROR: The … --- ## [Mispelled variable error when running PISCES on CROCOv2.1.2](https://forum.croco-ocean.org/t/mispelled-variable-error-when-running-pisces-on-crocov2-1-2/7554)
**Author:** [@lcbernardo](https://forum.croco-ocean.org/u/lcbernardo)\ **Replies:** 7\ **Last updated:** [February 3, 2026, 3:06pm UTC](https://forum.croco-ocean.org/t/mispelled-variable-error-when-running-pisces-on-crocov2-1-2/7554 "2026-02-03T15:06:59Z")
Hi everyone, I just recently tried running my model setup (previously run on CROCOv1.3.1) using the most recent version as of this date (CROCOv2.1.2). I am able to compile the source code, but I get an error when I try … --- ## [Run\_croco.bash with mpi run](https://forum.croco-ocean.org/t/run-croco-bash-with-mpi-run/7361)
**Author:** [@sridevi2024](https://forum.croco-ocean.org/u/sridevi2024)\ **Replies:** 1\ **Last updated:** [January 12, 2026, 12:43pm UTC](https://forum.croco-ocean.org/t/run-croco-bash-with-mpi-run/7361 "2026-01-12T12:43:04Z")
Hi Is any one using run\_croco.bash with mpi run. I tried to use but not succeed. When i am running PISCES quota, it took more than 3 hrs to write one monthly averaged file. Is there any solution to improve the simulatio… --- ## [How to save files based on tide times?](https://forum.croco-ocean.org/t/how-to-save-files-based-on-tide-times/7527)
**Author:** [@MHTonini](https://forum.croco-ocean.org/u/MHTonini)\ **Replies:** 0\ **Last updated:** [December 29, 2025, 5:10pm UTC](https://forum.croco-ocean.org/t/how-to-save-files-based-on-tide-times/7527 "2025-12-29T17:10:48Z")
Hello everyone, I’m modeling a region of the Atlantic Ocean that experiences extraordinary tides and where residual tidal currents are important in the circulation. We’re calculating a heat and salt balance and need to u… --- ## [WRF-CROCO runs but does not produce output files](https://forum.croco-ocean.org/t/wrf-croco-runs-but-does-not-produce-output-files/7510)
**Author:** [@Hungnt](https://forum.croco-ocean.org/u/Hungnt)\ **Replies:** 0\ **Last updated:** [December 1, 2025, 3:40am UTC](https://forum.croco-ocean.org/t/wrf-croco-runs-but-does-not-produce-output-files/7510 "2025-12-01T03:40:23Z")
Hi everyone, I am very new to WRF-CROCO. When I submit a job for WRF-CROCO simulation, the model ran but no output directory was created and there are no output files. I attached my namelist, job script, log files for… --- ## [The CPU and GPU results of CROCO are inconsistent](https://forum.croco-ocean.org/t/the-cpu-and-gpu-results-of-croco-are-inconsistent/7485)
**Author:** [@zhixin](https://forum.croco-ocean.org/u/zhixin)\ **Replies:** 1\ **Last updated:** [November 7, 2025, 8:20am UTC](https://forum.croco-ocean.org/t/the-cpu-and-gpu-results-of-croco-are-inconsistent/7485 "2025-11-07T08:20:46Z")
Hello everyone, I am currently running the GPU version of croco. Now I have a problem: with the CPU version, it can run normally for over 360 days before blowing up, but when using the GPU version, it blows up in less th… --- ## [Stops - "NetCDF: Variable not found" for ubar\_east / vbar\_east (interannual run)](https://forum.croco-ocean.org/t/stops-netcdf-variable-not-found-for-ubar-east-vbar-east-interannual-run/7429)
**Author:** [@Jellyfish](https://forum.croco-ocean.org/u/Jellyfish)\ **Replies:** 2\ **Last updated:** [August 19, 2025, 9:51am UTC](https://forum.croco-ocean.org/t/stops-netcdf-variable-not-found-for-ubar-east-vbar-east-interannual-run/7429 "2025-08-19T09:51:40Z")
Hi, I am running an interannual CROCO simulation for October 2019 and the model stops after some time with the following error (croco\_interY2019M10.out): 21598 7228.49861 2.327056888E-03 5.0606013E+01 5.0608340E+01 3.… --- ## [How to restart the run from intermediate month](https://forum.croco-ocean.org/t/how-to-restart-the-run-from-intermediate-month/506)
**Author:** [@Bechir](https://forum.croco-ocean.org/u/Bechir)\ **Replies:** 3\ **Last updated:** [August 4, 2025, 10:44am UTC](https://forum.croco-ocean.org/t/how-to-restart-the-run-from-intermediate-month/506 "2025-08-04T10:44:06Z")
I have been running the model for 2 years with interannual simulation using the script “run\_croco\_inter.bash”. Due to a problem of electricity the workstation shutdown. The run stopped at 6th month of the second year (20… --- ## [Wet dry: zeta not following bathymetry](https://forum.croco-ocean.org/t/wet-dry-zeta-not-following-bathymetry/7389)
**Author:** [@jcollin](https://forum.croco-ocean.org/u/jcollin)\ **Replies:** 2\ **Last updated:** [June 30, 2025, 12:29pm UTC](https://forum.croco-ocean.org/t/wet-dry-zeta-not-following-bathymetry/7389 "2025-06-30T12:29:42Z")
Hi, I am having issues with zeta in wet-dry simulations. For some reason, when reaching wet-dry region, zeta = dcrit instead of dcrit - h. I am not sure why, nor how to debug this. This a north-south periodical 2DH (n\_… --- ## [READ\_PATM, OBC\_PATM and Inverse Barometer Effect](https://forum.croco-ocean.org/t/read-patm-obc-patm-and-inverse-barometer-effect/7383)
**Author:** [@jvmcgovern](https://forum.croco-ocean.org/u/jvmcgovern)\ **Replies:** 0\ **Last updated:** [June 16, 2025, 8:50pm UTC](https://forum.croco-ocean.org/t/read-patm-obc-patm-and-inverse-barometer-effect/7383 "2025-06-16T20:50:07Z")
Hi All, I can see in the CROCO code that OBC\_PATM adds the inverse barometer effect at the boundary. This would suggest that OBC\_PATM should be switched off if the forcing model at the boundary includes the inverse baro… --- ## [Croco with PISCES](https://forum.croco-ocean.org/t/croco-with-pisces/7372)
**Author:** [@sridevi2024](https://forum.croco-ocean.org/u/sridevi2024)\ **Replies:** 5\ **Last updated:** [June 6, 2025, 4:06am UTC](https://forum.croco-ocean.org/t/croco-with-pisces/7372 "2025-06-06T04:06:51Z")
Dear CROCO users, My croco model coupled with PISCES is running well if I didn’t define the PSOURCE\_NCFILE. Once I define the PSOURCE\_NCFILE, still my model is running but DIC values written as NaN from time step 139th … --- ## [ERROR in nf\_read\_bry: nf\_get\_vara netCDF error code = -57](https://forum.croco-ocean.org/t/error-in-nf-read-bry-nf-get-vara-netcdf-error-code-57/7373)
**Author:** [@DU\_OCN](https://forum.croco-ocean.org/u/DU_OCN)\ **Replies:** 1\ **Last updated:** [June 3, 2025, 7:54am UTC](https://forum.croco-ocean.org/t/error-in-nf-read-bry-nf-get-vara-netcdf-error-code-57/7373 "2025-06-03T07:54:07Z")
Dear All, I am using recent release croco\_tools-v2.1.0 to make boundary condition and I am able to download data and to make it on our grid by using make\_OGCM\_mercator.m. In the first month I am getting error like below… --- ## [\[BLOWUP\] NaNs after switching from ERA5 to CMEMS wind forcing](https://forum.croco-ocean.org/t/blowup-nans-after-switching-from-era5-to-cmems-wind-forcing/7370)
**Author:** [@JosseContreras](https://forum.croco-ocean.org/u/JosseContreras)\ **Replies:** 2\ **Last updated:** [June 2, 2025, 1:39pm UTC](https://forum.croco-ocean.org/t/blowup-nans-after-switching-from-era5-to-cmems-wind-forcing/7370 "2025-06-02T13:39:09Z")
Hello CROCO users, I’m running an interannual simulation using CROCO with OpenMP, forced by ERA5 and GLORYS12. For surface forcing, I’ve recently replaced the original ERA5 winds with CMEMS reanalyzed winds (uwnd, vwnd,… --- ## [DIC written NaN while running](https://forum.croco-ocean.org/t/dic-written-nan-while-running/7364)
**Author:** [@sridevi2024](https://forum.croco-ocean.org/u/sridevi2024)\ **Replies:** 0\ **Last updated:** [May 20, 2025, 4:31am UTC](https://forum.croco-ocean.org/t/dic-written-nan-while-running/7364 "2025-05-20T04:31:18Z")
Hi I am running croco coupled with pisces quota. Model is running initially well. after few months written, suddenly DIC values become NaN. but model run is continuing. Rest of the parameters are writing well. What will… --- ## [Higher compuation time](https://forum.croco-ocean.org/t/higher-compuation-time/7358)
**Author:** [@sridevi2024](https://forum.croco-ocean.org/u/sridevi2024)\ **Replies:** 2\ **Last updated:** [May 16, 2025, 10:49am UTC](https://forum.croco-ocean.org/t/higher-compuation-time/7358 "2025-05-16T10:49:45Z")
It took higher time to write a monthly data when croco coupled with pisces in parallel run. With the same configuration (nodes and processes), Physics took only 20 minutes to complete writing one month data in 600 dt. Bu… --- ## [STEP2D abnormal job end blow up](https://forum.croco-ocean.org/t/step2d-abnormal-job-end-blow-up/7356)
**Author:** [@Tronka](https://forum.croco-ocean.org/u/Tronka)\ **Replies:** 1\ **Last updated:** [May 8, 2025, 10:33am UTC](https://forum.croco-ocean.org/t/step2d-abnormal-job-end-blow-up/7356 "2025-05-08T10:33:17Z")
Hi all, I have gotten BenguelaLR and VHR to work with the provided setup (some changes to preproc as described in a previous post. Cross checked with results from the sample files for the benguela case and everything se… --- ## [Obc configuration](https://forum.croco-ocean.org/t/obc-configuration/7347)
**Author:** [@mmcintra](https://forum.croco-ocean.org/u/mmcintra)\ **Replies:** 0\ **Last updated:** [April 29, 2025, 1:50pm UTC](https://forum.croco-ocean.org/t/obc-configuration/7347 "2025-04-29T13:50:54Z")
Hello all, I have a question about OBC special configuration in CROCO, 2 questions really. Is it possible to configure the model to have different open boundary conditions in different boarders , e.g. orlanski at east … --- ## [Feedback on the application of CROCO with tidal forcing](https://forum.croco-ocean.org/t/feedback-on-the-application-of-croco-with-tidal-forcing/7305)
**Author:** [@cesar90](https://forum.croco-ocean.org/u/cesar90)\ **Replies:** 2\ **Last updated:** [April 10, 2025, 1:52am UTC](https://forum.croco-ocean.org/t/feedback-on-the-application-of-croco-with-tidal-forcing/7305 "2025-04-10T01:52:16Z")
Dear all, Please, I need your support to improve my tidal forcing model. My study area is in the north of the yucatan peninsula. It is a shallow region with a micro-tidal tidal range. My model has a spatial resolution … --- ## [Run\_croco.bash issue](https://forum.croco-ocean.org/t/run-croco-bash-issue/7314)
**Author:** [@popoli](https://forum.croco-ocean.org/u/popoli)\ **Replies:** 0\ **Last updated:** [April 9, 2025, 1:16pm UTC](https://forum.croco-ocean.org/t/run-croco-bash-issue/7314 "2025-04-09T13:16:15Z")
hello, any one has used run\_croco.bash to run a climatology? i am using that file and unfortunately it is stopping at the end of each year instead of process the whole period. could someone help me with the good file or … --- ## [Model hangs when writing netCDFs on HPC service](https://forum.croco-ocean.org/t/model-hangs-when-writing-netcdfs-on-hpc-service/7128)
**Author:** [@jvmcgovern](https://forum.croco-ocean.org/u/jvmcgovern)\ **Replies:** 3\ **Last updated:** [January 8, 2025, 3:58pm UTC](https://forum.croco-ocean.org/t/model-hangs-when-writing-netcdfs-on-hpc-service/7128 "2025-01-08T15:58:47Z")
Hi there, We are running our CROCO model on Meluxina in Luxemburg, and when we try to use more than 16 nodes (128 cores per node), the code hangs when writing netCDFs. We are thinking that it could be a hardcoded part … --- ## [About BD\_EXCHANGE](https://forum.croco-ocean.org/t/about-bd-exchange/928)
**Author:** [@oartal1](https://forum.croco-ocean.org/u/oartal1)\ **Replies:** 0\ **Last updated:** [December 3, 2024, 2:58pm UTC](https://forum.croco-ocean.org/t/about-bd-exchange/928 "2024-12-03T14:58:57Z")
Hello everyone, I’m writing to ask for some guidance. Until a few months ago, I was using version 1.3 without any issues for 3-day forecasts. Recently, I upgraded to version 2.0.1 and tested a simulation that had previo… --- ## [Set\_cycle error](https://forum.croco-ocean.org/t/set-cycle-error/921)
**Author:** [@dwikyharris](https://forum.croco-ocean.org/u/dwikyharris)\ **Replies:** 0\ **Last updated:** [November 28, 2024, 9:11am UTC](https://forum.croco-ocean.org/t/set-cycle-error/921 "2024-11-28T09:11:07Z")
Hi, I’m using crocov2.0 and I want to run interannual model. I have issues while running for 2015-2019. It said set\_cycle error. But on the other hand, I already modified the download\_mercator\_python.m, changing the (tim… --- ## [Question on SST nudging](https://forum.croco-ocean.org/t/question-on-sst-nudging/832)
**Author:** [@xzhou473](https://forum.croco-ocean.org/u/xzhou473)\ **Replies:** 3\ **Last updated:** [September 18, 2024, 4:13pm UTC](https://forum.croco-ocean.org/t/question-on-sst-nudging/832 "2024-09-18T16:13:43Z")
Hi everyone, I am currently working on nudging my CROCO model with GLORYS-based SST data but encountered an issue where GET\_TCLIMA is unable to read the temp variable from the climatology forcing file (see attached figu… --- ## [ERROR: Abnormal termination: netCDF INPUT: GET\_GRID ERROR: Cannot open input NetCDF file: croco\_grd.nc](https://forum.croco-ocean.org/t/error-abnormal-termination-netcdf-input-get-grid-error-cannot-open-input-netcdf-file-croco-grd-nc/710)
**Author:** [@eduardolima255](https://forum.croco-ocean.org/u/eduardolima255)\ **Replies:** 9\ **Last updated:** [August 31, 2024, 6:41am UTC](https://forum.croco-ocean.org/t/error-abnormal-termination-netcdf-input-get-grid-error-cannot-open-input-netcdf-file-croco-grd-nc/710 "2024-08-31T06:41:51Z")
Hi dear croco users, I’m encountering an error while running my model in a regional and climatological configuration. I’m using Open MPI and running it for 1 month as a test. I will provide detailed information below an… --- ## [Error in coupling CROCO - WW3](https://forum.croco-ocean.org/t/error-in-coupling-croco-ww3/753)
**Author:** [@cesar90](https://forum.croco-ocean.org/u/cesar90)\ **Replies:** 11\ **Last updated:** [August 21, 2024, 7:27am UTC](https://forum.croco-ocean.org/t/error-in-coupling-croco-ww3/753 "2024-08-21T07:27:28Z")
Dear friends, I am working on the coupling of CROCO with WW3. To do so, I am first trying to run the Benguela coupled test case; I am following the methodology exposed in the last CROCO summer course \>\> http://mosa.dgeo… [Next page](https://forum.croco-ocean.org/c/run-issues/18.md?page=1)