[Ncep.list.fv3-announce] fv3gfs release beta test
Shrinivas Moorthi
shrinivas.moorthi at noaa.gov
Fri May 12 19:24:25 UTC 2017
SJ, this is about compile time.
Moorthi
On 05/12/2017 03:16 PM, Shian-Jiann Lin - NOAA Federal wrote:
> Sam:
>
> I thought the timing only showed "FV_DIAG", not GFS_diagnostics. The
> FV_diag involves a lot of things that does not palatalized well.
>
>
> Shian-Jiann Lin
> NOAA/Geophysical Fluid Dynamics Laboratory
>
> On Fri, May 12, 2017 at 3:11 PM, Samuel Trahan - NOAA Affiliate
> <samuel.trahan at noaa.gov <mailto:samuel.trahan at noaa.gov>> wrote:
>
> Jim,
>
> If you can do that, you will be my hero. Jet takes twice as long
> to compile, and most of that time is the GFS_diagnostics.
>
> Sincerely,
> Sam Trahan
>
> On Fri, May 12, 2017 at 3:07 PM, James Abeles - NOAA Affiliate
> <james.a.abeles at noaa.gov <mailto:james.a.abeles at noaa.gov>> wrote:
>
> Moorthi,
> I ran the tests with a simple C96 grid for 48 hours and the
> one that compile GFS_diagnostics with -O0 is actually faster:
> wrk.C96/out.96:0: FV_DIAG 29.1041 0.0000
> 29.1041 0
> wrk.C96.diag_O0/out.96:0: FV_DIAG 14.2025
> 0.0000 14.2025 0
>
> Now I need to figure out if we can compile some routines with
> different flags.
>
> On Fri, May 12, 2017 at 3:03 PM, Shrinivas Moorthi
> <shrinivas.moorthi at noaa.gov
> <mailto:shrinivas.moorthi at noaa.gov>> wrote:
>
> Thanks Jim.
> Moorthi
> On 05/12/2017 02:55 PM, James Abeles - NOAA Affiliate wrote:
>> Resending with correct -O0 flag.
>>
>> Moorthi,
>> The slow compile is GFS_diagnostics.F90. I have tried
>> many things to reduce the compile time but the only one
>> that worked was compiling at -O0. There is really nothing
>> being done in this routine other than storing
>> diagnostices so I am testing the performance with -O0 vs -O2.
>>
>> *-O2*
>> /gpfs/hps/emc/global/noscrub/James.A.Abeles/fv3gfs.v0beta/FV3/gfsphysics>
>> time ftn -DNEW_TAUCTMAX -DSMALL_PE -DNEMS_GSM -fpp -Wp,-w
>> -I/opt/cray/netcdf/4.3.2/INTEL/140/include
>> -I/opt/cray/netcdf/4.3.2/INTEL/140/include -fno-alias
>> -auto -safe-cray-ptr -ftz -assume byterecl -nowarn -sox
>> -align array64byte -i4 -real-size 32 -O2 -debug minimal
>> -fp-model source -qoverride-limits -I../fms
>> -I../fms/include -c GFS_layer/GFS_diagnostics.F90 -o
>> GFS_layer/GFS_diagnostics.o
>>
>> real 10m3.761s
>> user 10m1.842s
>> sys 0m0.396s
>>
>> *-O0*
>> /gpfs/hps/emc/global/noscrub/James.A.Abeles/fv3gfs.v0beta/FV3/gfsphysics>
>> time ftn -DNEW_TAUCTMAX -DSMALL_PE -DNEMS_GSM -fpp -Wp,-w
>> -I/opt/cray/netcdf/4.3.2/INTEL/140/include
>> -I/opt/cray/netcdf/4.3.2/INTEL/140/include -fno-alias
>> -auto -safe-cray-ptr -ftz -assume byterecl -nowarn -sox
>> -align array64byte -i4 -real-size 32 -O0 -debug minimal
>> -fp-model source -qoverride-limits -I../fms
>> -I../fms/include -c GFS_layer/GFS_diagnostics.F90 -o
>> GFS_layer/GFS_diagnostics.o
>> real 0m0.981s
>> user 0m0.728s
>> sys 0m0.072s
>>
>>
>>
>
>
> --
> Dr. Shrinivas Moorthi
> Research Meteorologist
> Modeling and Data Assimilation Branch
> Environmental Modeling Center / National Centers for Environmental Prediction
> 5830 University Research Court - (W/NP23), College Park MD 20740 USA
> Tel:(301)683-3718 <tel:%28301%29%20683-3718>
>
>
>
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--
Dr. Shrinivas Moorthi
Research Meteorologist
Modeling and Data Assimilation Branch
Environmental Modeling Center / National Centers for Environmental Prediction
5830 University Research Court - (W/NP23), College Park MD 20740 USA
Tel:(301)683-3718
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