pxp->bf_offset <= offset && offset < pxp->bf_offset + (off_t) pxp-

Question

Hello Chris,
I was running AEM3D with a time step of 15 s for 150000 iterations. At the 22680th steps I obtained this error:

ERROR: Assertion failed: pxp->bf_offset <= offset && offset < pxp->bf_offset + (off_t) pxp->bf_extent, file posixio.c, line 327

What could cause this error?

Cheers

Irene

Answer 1

This is the 2GB limit for Netcdf files in Windows.

You either need to reduce the number of variables you are outputting to each file or the output frequency.

Chris

Comments

I fixed the problem with 2GB netcdf size limit by reducing the number of variables in "SHEET" files, but in order to have "Velocity Arrows" you need to have U V and W in the same nc file.

I wrote a MATLAB code that combine all nc files together so at the end you have a nc file with all variables and size higher than 2GB which in my case my file size is around 4.4GB

so the best is to reduce the number of variables and then combine the files together.

Answer 2

I fixed the problem with 2GB netcdf size limit by reducing the number of variables in "SHEET" files, but in order to have "Velocity Arrows" you need to have U V and W in the same nc file. 

I wrote a MATLAB code that combine all nc files together so at the end you have a nc file with all variables and size higher than 2GB which in my case my file size is around 4.4GB

so the best is to reduce the number of variables and then combine the files together.