NMM crashes with gfs 0.25 but not with 0.5

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norulz
Posts: 92
Joined: Thu Mar 12, 2015 1:43 pm

NMM crashes with gfs 0.25 but not with 0.5

Post by norulz » Fri May 22, 2015 10:29 pm

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
Posts: 1567
Joined: Wed Aug 19, 2009 10:05 am

Re: NMM crashes with gfs 0.25 but not with 0.5

Post by meteoadriatic » Sat May 23, 2015 3:21 am

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
Posts: 334
Joined: Thu Jun 14, 2012 7:19 am

Re: NMM crashes with gfs 0.25 but not with 0.5

Post by dominic » Tue May 26, 2015 9:35 am

meteoadriatic wrote: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
Posts: 1567
Joined: Wed Aug 19, 2009 10:05 am

Re: NMM crashes with gfs 0.25 but not with 0.5

Post by meteoadriatic » Wed May 27, 2015 5:19 pm

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

norulz
Posts: 92
Joined: Thu Mar 12, 2015 1:43 pm

Re: NMM crashes with gfs 0.25 but not with 0.5

Post by norulz » Thu May 28, 2015 4:39 pm

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

dominic
Posts: 334
Joined: Thu Jun 14, 2012 7:19 am

Re: NMM crashes with gfs 0.25 but not with 0.5

Post by dominic » Thu May 28, 2015 6:53 pm

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

Thanks Ivan!

It works perfect!

ZHB
Posts: 25
Joined: Wed May 30, 2012 10:49 am

Re: NMM crashes with gfs 0.25 but not with 0.5

Post by ZHB » Sun May 31, 2015 11:37 am

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.

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