Opened 8 years ago

Closed 8 years ago

#808 closed task (fixed)

Start dump request

Reported by: cbirch Owned by: um_support
Component: Data Keywords: GRIB reconfiguration
Cc: Platform:
UM Version: 7.3

Description

Hi,

Can I have UM start dumps for 12Z 24th May and 00Z 25th May 2003?

Thanks,
Cathryn

Change History (8)

comment:1 Changed 8 years ago by willie

Hi Cathryn,

I can't do Met Office start dumps, as these are more than five years old. I have provided ECMWF GRIB files instead. They are in /work/n02/n02/wmcginty/data_xfer on HECToR.

Regards

Willie

comment:2 Changed 8 years ago by cbirch

Hi Willie,

That's fine. I've copied them across.

Thanks,
Cathryn

comment:3 Changed 8 years ago by cbirch

Hi Willie,

I've been trying to get my vn7.3 global job to work with those grib files. Firstly I tried them directly in xtzgb with the ECMWF GRIB button pushed on the start dump window. This didn't work (xgztb000.xgztb.d12073.t001512.leave) so I found the jobs xdkea and xdkeb to use to reconfigure.

I have tried using xdkeb but that also failed in the reconfiguration (xhbhb000.xhbhb.d12073.t030436.leave) and I'm not sure why. I'm also not sure if xdkeb will create a start dump with the correct resolution/configuration for my vn7.3 runs anyway?

Cheers,
Cathryn

comment:4 Changed 8 years ago by willie

Hi Cathryn,

You're doing the right thing, using xdkeb. But, you also need an overrides file to make it work. Take a copy of my overrides directory /home/n02/n02/wmcginty/overrides and add the line $HOME/overrides/reduced_opt.ovr to the UMUI user compile overrides for the reconfiguration. This is necessary because we are now using the Cray compiler.

Having reconfigured the GRIB files into UM format, you will probably need to reconfigure again to the right resolution!

Regards

Willie

comment:5 Changed 8 years ago by cbirch

Hi Willie,

I successfully created a .astart file from the xdkeb job (xhbhb.astart). It looks fine but my global job still fails in the reconfiguration when using the new file. I don't know why - the .leave file (xgztb000.xgztb.d12073.t221132.leave) isn't very helpful.

Thanks,
Cathryn

comment:6 Changed 8 years ago by willie

Hi Cathryn,

You need to uncheck the GRIB button in your global job, now that the file has been converted.

regards

Willie

comment:7 Changed 8 years ago by cbirch

Hi Willie,

Woops, yes sorry I should have known that.

The global job works now and so do the 12km and 4km nests so you can close this.

Thanks for your help.

Cathryn

comment:8 Changed 8 years ago by willie

  • Keywords GRIB reconfiguration added
  • Resolution set to fixed
  • Status changed from new to closed
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