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WRF ungrib.exe segmentation fault with Rapid Refresh (RAP) - new issue

spacekace3005

New member
I am encountering an ungrib.exe issue when trying to reproduce a previously successful workflow processing RAP (and GFS) data from NCEI (downloaded from here: NCEI Object Store Explorer) on Derecho. I have successfully processed the exact same data files in the past with only slightly different domains. I am at a loss for why I can no longer work with this data. Previously, I would extract soil data from GFS and then process RAP for the meteorological data. The GFS data still works with ungrib. For some reason, the RAP data is an issue now.

Successful processing of these data files are in the following locations (no issues with ungrib.exe):
/glade/derecho/scratch/kshourd/12May2022/OLD/WPS
/glade/derecho/scratch/kshourd/12May2022/OLD/PRECURSOR/WPS

Another graduate student I have been working with encountered the same issue trying to use RAP data from NCEI for a different case.

The runs I am referring to are located here:
/glade/derecho/scratch/kshourd/12May2022/NEW/WPS
/glade/derecho/scratch/kshourd/12May2022/NEW_PRECURSOR/WPS

The relevant RAP data is located here:
/glade/derecho/scratch/kshourd/DATA/RAP/20220512/NEW_MC
/glade/derecho/scratch/kshourd/DATA/RAP/20220512/NEW_PRECURSOR

The ungrib.exe error I am receiving is pasted below, and a screenshot is attached for reference:
*** Starting program ungrib.exe ***
Start_date = 2022-05-12_00:00:00 , End_date = 2022-05-13_00:00:00
output format is WPS
Path to intermediate files is ./

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
#0 0x7eff702578ff in ???
#1 0x42cd2a in ???
#2 0x42cc27 in ???
#3 0x42b5d2 in ???
#4 0x428d70 in ???
#5 0x425f3e in ???
#6 0x408b4b in ???
#7 0x409992 in ???
#8 0x7eff70240e6b in ???
#9 0x7eff70240f34 in ???
#10 0x4033b9 in ???
at ../sysdeps/x86_64/start.S:120
#11 0xffffffffffffffff in ???
Segmentation fault (core dumped)

My ungrib.log is also attached.

Thank you!
 

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  • Screenshot 2025-11-10 160848.png
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