NMM crashes with gfs 0.25 but not with 0.5

[norulz]

I have been experiencing seg faults in 3 different models with resolutions of 9:3 and 12:4 kms.
The crashes always occur within 15 seconds of a mod 3 == 0 hour into the simulation (as soon as 9hrs and up to 75hrs). Reruns with the same initialization data always crash at exactly the same point.

I have been using gfsp25ptile and after reverting to gfsptile the crashes stopped.

I tried all the suggestions posted in the forums regarding remedies for instability and seg fault crashes and nothing had any effect at all.

Can anyone please help with an explanation why the NMM models might have a stability problem with GFS 0.25 and what could be done to remedy this.

Thanks,
David

[meteoadriatic]

Hello,

Yes there seems to be a bug inside gfsp25ptiles. I found that some files are not correct and then there is error in wrfbdy files. I reported it already to Robert and waiting for reply but as now is weekend probably will have to wait for Monday. Until that use 0.5° as you found.

[dominic]

Hello,

Yes there seems to be a bug inside gfsp25ptiles. I found that some files are not correct and then there is error in wrfbdy files. I reported it already to Robert and waiting for reply but as now is weekend probably will have to wait for Monday. Until that use 0.5° as you found.

indeed even with arw I faced the same problem , the ptiles are downloaded properly , just start the run first part , then quickly stops with an error .

[meteoadriatic]

Robert located and fixed the problem. It should be ok now to use 0.25 tiles.

[norulz]

Thanks!
I'll change back over to 0.25 deg.
David

[dominic]

Robert located and fixed the problem. It should be ok now to use 0.25 tiles.

Thanks Ivan!

It works perfect!

[ZHB]

Hello,

Is it possible to use 0.25 tile for run longer than 120 hours ? Download always fails when downloading grib upper than 120 hours.