faq.md

ERROR: invalid cell
 
Aborting in file clipping.c, line 1295 ...
Error in s2dverification::CDORemap(data_array, lons, lats, ...) : 
  CDO remap failed.
```


###  6. Errors using a new cluster (setting Nord3)

When using a new cluster, some errors could happen. Here, there are some behaviours detected from issue #64.

- whether running Compute(), request password:

```
Password:
```

Check that the host name for the cluster has been include in the ´.ssh/config´. 
Check also that the passwordless access has been properly set up. You can check that you can access the cluster without providing the password by using the host name ´ssh nord3´ (see more infor in the [**Practical guide**](inst/doc/practical_guide.md)).

- alias may not be available, such as 'esnas' for 'esarchive'

In this case, the error ´No data files found for any of the specified datasets.´ will be returned.

- repetitive prints of modules loading:

```
load UDUNITS/2.1.24 (PATH)
load NETCDF/4.1.3 (PATH, LD_LIBRARY_PATH, NETCDF)
load R/2.15.2 (PATH, LD_LIBRARY_PATH)
```

The .bashrc in your Nord 3 home must be edit with the information from [BSC ES wiki](https://earth.bsc.es/wiki/doku.php?id=computing:nord3) to load correct modules. However, if you add a line before those, the result will be the one above.

Check your .bashrc to avoid loading modules before define the department ones.


- R versions: Workstation version versus remote cluster version

Some functions depends on the R version used and they should be compatible in workstation and in the remote cluster. If the error:

```
cannot read workspace version 3 written by R 3.6.2; need R 3.5.0 or newer
```

change the R version used in your workstation to one newer.


### 7. Start() fails retrieving data

If you get the following error message:

```
Exploring files... This will take a variable amount of time depending
*   on the issued request and the performance of the file server...
Error in R_nc4_open: No such file or directory
Error in file_var_reader(NULL, file_object, NULL, var_to_read, synonims) :
  Either 'file_path' or 'file_object' must be provided.
```

check if your path contains the label $var$ in the path. If not, try to added it as part of the path or the file name. Where $var$ is the variable to retrieve from files.