[Ncep.list.fv3-announce] fv3gfs release beta test

[Shian-Jiann Lin - NOAA Federal]

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> 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> 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> 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 <(301)%20683-3718>
>>>
>>>
>>
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>>
>
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