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<div class="moz-cite-prefix">Thanks Jim.<br>
Moorthi<br>
On 05/12/2017 02:55 PM, James Abeles - NOAA Affiliate wrote:<br>
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cite="mid:CAL+pvuGkC8oUX5LgzEMqTiaiN7DcgLWQCKVSLVEDgtRiJjx8mg@mail.gmail.com"
type="cite">
<div dir="ltr">Resending with correct -O0 flag.
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<div><span style="font-size:12.8px">Moorthi,</span>
<div style="font-size:12.8px">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.</div>
<div style="font-size:12.8px"><br>
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<div style="font-size:12.8px"><b><font size="4">-O2</font></b></div>
<div style="font-size:12.8px">
<div>/gpfs/hps/emc/global/noscrub/<wbr>James.A.Abeles/fv3gfs.v0beta/<wbr>FV3/gfsphysics>
time ftn -DNEW_TAUCTMAX -DSMALL_PE -DNEMS_GSM -fpp -Wp,-w
-I/opt/cray/netcdf/4.3.2/<wbr>INTEL/140/include
-I/opt/cray/netcdf/4.3.2/<wbr>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</div>
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<div>real 10m3.761s</div>
<div>user 10m1.842s</div>
<div>sys 0m0.396s</div>
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<div><b><font size="4">-O0</font></b></div>
<div>/gpfs/hps/emc/global/noscrub/<wbr>James.A.Abeles/fv3gfs.v0beta/<wbr>FV3/gfsphysics>
time ftn -DNEW_TAUCTMAX -DSMALL_PE -DNEMS_GSM -fpp -Wp,-w
-I/opt/cray/netcdf/4.3.2/<wbr>INTEL/140/include
-I/opt/cray/netcdf/4.3.2/<wbr>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</div>
<div>real 0m0.981s</div>
<div>user 0m0.728s</div>
<div>sys 0m0.072s</div>
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<div style="font-size:12.8px"><br>
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<br>
<p><br>
</p>
<pre class="moz-signature" cols="72">--
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</pre>
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