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<html>
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<title>WRFDA Known Problems and Fixes</title>
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<p class="pagetitle">Known bugs and solutions for older versions of WRFDA</p>
<p class="bodytext"><b>NOTE: These older versions are no longer supported, it is strongly recommended that you use the most recent version of WRFDA.</b><br><br></p>
<p class="bodytext">Before installing WRFDA, ensure your system meets the <a href="requirements.html">minimum requirements</a>. <br></p>
<blockquote>
<blockquote><ul class="bodytext"><li><a href="#V3_3">Version 3.3</a></li>
<li><a href="#V3_2">Version 3.2</a></li>
<li><a href="#V3_1">Version 3.1</a></li>
<li><a href="#V3_0">Version 3.0</a></li></ul><br></blockquote></blockquote>
</blockquote>
<a name="V3_3"></a><p class="pagetitle">WRFDA Version 3.3 : Known Problems and Fixes</p>
<blockquote>
<h1> gfortran "Graphite loop optimizations" error (posted 2015-05-18) </h1>
<p class="bodytext"><strong>Problem: </strong><br>
WRFDA fails to compile: gfortran gives the message "sorry, unimplemented: Graphite loop optimizations can only be used if the libcloog-ppl0 package is installed"</p>
<p class="bodytext"><strong>Solution:</strong><br>
After running the configuration script (<code>./configure wrfda</code>) edit the "<code>configure.wrf</code>" file to remove the text "-ftree-loop-linear" at or near line 115 (where the variable "FCOPTIM" is defined). Then compile WRFDA.</p>
<h1> Problem with WRFPLUS, especially with PGI compiler (posted 2011-06-24) </h1>
<p class="bodytext"><strong>Problem: </strong><br>
The adjoint model integration fails with either a segmentation fault or the error message: <code>0: ALLOCATE: 18446744072053605056 bytes requested; not enough memory</code>.</p>
<p class="bodytext"><strong>Solution:</strong><br>
Download <a href="fixes/v33/module_em_tl.F">module_em_tl.F</a>, <a href="fixes/v33/module_em_ad.F">module_em_ad.F</a>, <a href="fixes/v33/module_advect_em_tl.F">module_advect_em_tl.F</a> and <a href="fixes/v33/module_advect_em_ad.F">module_advect_em_ad.F</a> and place them in the <kbd>WRFPLUS/dyn_em</kbd> directory.
Then download <a href="fixes/configure_new.defaults">configure_new.defaults</a> and place it in the <kbd>WRFPLUS/arch</kbd> directory.</p>
<h1> WRFPLUS compilation problem with g95 compiler for Mac OS (posted 2011-06-24) </h1>
<p class="bodytext"><strong>Problem: </strong><br>
WRFPLUS fails to compile when using g95 compiler for Mac OS. </p>
<p class="bodytext"><strong>Solution:</strong><br>
Download <code><a href="fixes/v33/adStack.c">adStack.c</a></code> and place it in the <kbd>WRFPLUS/frame</kbd> directory.</p>
<h1> Problem with New Configure Script (posted 2011-04-08) </h1>
<p class="bodytext"><strong>Problem: </strong><br>
There is a problem with the new configure script on Opensuse and Ubuntu Linux. It will fail on creating configure.wrf file, and may result in file removal in the top WRFV3/ directory. If configure.wrf is successfully created, then this fix doesn't affect you. </p>
<p class="bodytext"><strong>Solution:</strong><br>
If files are removed from WRFV3 directory, you will have to redownload the V3.3 tar file, or re-untar the file. Then download the <a href=http://www2.mmm.ucar.edu/wrf/src/fix/configure_fix.tar>configure_fix.tar</a> file in the WRFV3 directory. This file contains a new configure script, and a new arch/configure_new.default file.</p>
<h1> Problem with New compile Script (posted 2011-04-08) </h1>
<p class="bodytext"><strong>Problem: </strong><br>
There is a problem with the new compile script on IBM AIX OS. It will complain about invalid parameters for grep if compiled with CRTM lib. </p>
<p class="bodytext"><strong>Solution:</strong><br>
Download the <a href=fixes/v33/compile_fix.tar>compile_fix.tar</a> file in the WRFDA directory, untar it and overwrite the old file. <br></p>
<h1> Problem reading BUFR or PREPBUFR files (posted 2009-04-09) </h1>
<p class="bodytext"><strong>Problem: </strong><br>
WRFDA 3.5 or earlier compiled with gfortran or ifort returns the following error message when trying to read a BUFR or PREPBUFR file:<br><br>
**************BUFR ARCHIVE LIBRARY ABORT*****************<br>
BUFRLIB: OPENBF - ERROR READING INPUT FILE CONNECTED TO UNIT 26<br>
WHEN CHECKING FOR 'BUFR' IN FIRST 4 BYTES OF RECORD<br>
**************BUFR ARCHIVE LIBRARY ABORT*****************</p>
<p class="bodytext"><strong>Solution:</strong><br>
See our page on <a href="readBUFR.html">Reading BUFR files</a></p>
</blockquote>
<a name="V3_2"></a><p class="pagetitle">WRF Var Version 3.2 : Known Problems and Fixes</p>
<blockquote>
<h1> Problem reading BUFR or PREPBUFR files (posted 2009-04-09) </h1>
<p class="bodytext"><strong>Problem: </strong><br>
WRFDA 3.5 or earlier compiled with gfortran or ifort returns the following error message when trying to read a BUFR or PREPBUFR file:<br><br>
**************BUFR ARCHIVE LIBRARY ABORT*****************<br>
BUFRLIB: OPENBF - ERROR READING INPUT FILE CONNECTED TO UNIT 26<br>
WHEN CHECKING FOR 'BUFR' IN FIRST 4 BYTES OF RECORD<br>
**************BUFR ARCHIVE LIBRARY ABORT*****************</p>
<p class="bodytext"><strong>Solution:</strong><br>
See our page on <a href="readBUFR.html">Reading BUFR files</a></p>
</blockquote>
<a name="V3_1"></a><p class="pagetitle">WRF Var Version 3.1 : Known Problems and Fixes</p>
<!-- <p style="padding-right: 45px;padding-left: 60px;"><table width="100%" border="1" class="bodytable" style="background-color:white;"><tr><td style="text-align:center;background-color:#DDAAAA;"><b>NOTE:</b> These older versions (3.1 and earlier) are no longer supported. If you are unable to solve your problem with the solutions listed here, upgrade to a newer version of WRFDA.</td></tr></table></p>
-->
<blockquote>
<h1> Problem reading BUFR or PREPBUFR files (posted 2009-04-09) </h1>
<p class="bodytext"><strong>Problem: </strong><br>
WRFDA 3.5 or earlier compiled with gfortran or ifort returns the following error message when trying to read a BUFR or PREPBUFR file:<br><br>
**************BUFR ARCHIVE LIBRARY ABORT*****************<br>
BUFRLIB: OPENBF - ERROR READING INPUT FILE CONNECTED TO UNIT 26<br>
WHEN CHECKING FOR 'BUFR' IN FIRST 4 BYTES OF RECORD<br>
**************BUFR ARCHIVE LIBRARY ABORT*****************</p>
<p class="bodytext"><strong>Solution:</strong><br>
See our page on <a href="readBUFR.html">Reading BUFR files</a></p>
<h1>Parallel WRF-Var run with PREPBUFR observational data (Posted 2009-04-09)</h1>
<p class="bodytext"><strong>Problem: </strong><br>
Parallel running WRFDA with PREPBUFR observational data (ob_format=1) might get hung up with no error message being printed.</p>
<p class="bodytext"><strong>Solution:</strong><br>
Click <a href="fixes/v31/V3_1_prepbufr_fix.tar">here</a> to download the patch</p>
<h1>Unblock and reblock radiance BUFR data with gfortran (Posted 2009-04-09)</h1>
<p class="bodytext"><strong>Problem: </strong><br>
In some Linux operating systems using the gfortran compiler, the radiance BUFR data unblocked and reblocked by cwordsh might be unable to be read by WRFDA.</p>
<p class="bodytext"><strong>Solution:</strong><br>
Upgrade to the latest version of WRFDA</p>
<h1>4D-Var (Posted 2009-04-09)</h1>
<p class="bodytext"><strong>Problem: </strong><br>
4D-Var results are unstable on some platforms.</p>
<p class="bodytext"><strong>Solution:</strong><br>
Upgrade to the latest version of WRFDA</p>
<p class="bodytext"> <br><br></p>
</blockquote>
<a name="V3_0"></a><p class="pagetitle">WRFDA Version 3.0 : Known Problems and Fixes</p>
<!-- <p style="padding-right: 45px;padding-left: 60px;"><table width="100%" border="1" class="bodytable" style="background-color:white;"><tr><td style="text-align:center;background-color:#DDAAAA;"><b>NOTE:</b> These older versions (3.1 and earlier) are no longer supported. If you are unable to solve your problem with the solutions listed here, upgrade to a newer version of WRFDA.</td></tr></table></p>
-->
<blockquote>
<h1>Minor bug fixes for version 3.0.1.1 (Posted 2009-01-09)</h1>
<p class="bodytext"><strong>Bug fix related to check_rh=2</strong><br>
To fix this problem a second RH check has been added after the moisture adjustment to
ensure the RH is within a reasonable range.<br>
Affected files:<br>
var/da/da_physics/da_check_rh.inc<br>
var/da/da_physics/da_physics.f90</p>
<p class="bodytext"><strong>Bug fix related to sfc_assi_options=1</strong><br>
To keep original <em>(not WRF-Var "corrected" when sfc_assi_options=1)</em> surface pressure for writing out in gts_omb_oma and filtered_obs.<br>
Note: when qc_flag=2, O-B <em>(Observation minus Background)</em> values are calculated from surface-"corrected" O, while O values written out in gts_omb_oma are original values. That means B values are unknown when qc_flag=2.<br>
Affected files:<br>
var/da/da_buoy/da_get_innov_vector_buoy.inc<br>
var/da/da_metar/da_get_innov_vector_metar.inc<br>
var/da/da_ships/da_get_innov_vector_ships.inc<br>
var/da/da_sound/da_get_innov_vector_sonde_sfc.inc<br>
var/da/da_synop/da_get_innov_vector_synop.inc</p>
<p class="bodytext"><strong>Bug fix related to analysis_type = "VERIFY"</strong><br>
This fix will ensure the writing out of statistics.<br>
Affected files:<br>
var/da/da_main/da_solve.inc<br>
var/da/da_main/da_wrfvar_top.f90</p>
<p class="bodytext">Bug fix to initialize jo_radiance properly when radiance code is not included.<br>
Affected file: <br>
var/da/da_minimisation/da_jo_and_grady.inc</p>
<p class="bodytext"><strong>Solution:</strong>
<p class="bodytext">Upgrade to a newer version of WRFDA (fixed in version 3.1)</p>
<h1></h1>
<h1>Known Problems for version 3.0.1.1 (Posted 2009-01-09)</h1>
<p class="bodytext">WRF-Var does not work properly with NCEP PREPBUFR observations, because of the following known problems:</p>
<p class="bodytext"> (1) pressure fields are used twice and observation numbers are double-counted because mass and wind reports are separated in NCEP PREPBUFR files.</p>
<p class="bodytext"> (2) time-duplicate observations from fixed stations are over-used. For example, if there is more than one synop report from a surface station contained in a 6-hour time-windowed PREPBUFR file, only one report should be used. </p>
<p class="bodytext"><em>Fixes will be available in the next release.</em><br>
</p>
<h1>
<hr>Known Problems in Version 3.0.1 </h1>
<h1>Compile Error using PGI 7.1+ (posted 2008-06-10) </h1>
<p class="bodytext"><strong>Problem</strong>: Compile errors like this one occur when using PGI 7.1 or later: "<kbd>PGF90-S-0000-Internal compiler error. string_expr_length: ast not string op</kbd>". </p>
<p class="bodytext"><strong>Solution</strong>: Changes have been made to the latest WRF Var tar file to fix the problem. The problem affects the following files:<br>
WRFDA/var/da/da_main/da_med_initialdata_input.inc<br>
WRFDA/var/da/da_obs_io/da_read_obs_radar.inc<br>
WRFDA/var/da/da_obs_io/da_read_omb_tmp.inc<br>
WRFDA/var/da/da_obs_io/da_read_rand_unit.inc<br>
WRFDA/var/da/da_obs_io/da_read_y_unit.inc<br>
WRFDA/var/da/da_obs_io/da_scan_obs_radar.inc<br>
WRFDA/var/da/da_ssmi/da_read_obs_ssmi.inc<br>
WRFDA/var/da/da_ssmi/da_scan_obs_ssmi.inc<br>
WRFDA/var/da/da_tools/da_openfile.inc<br>
WRFDA/var/da/da_tracing/da_trace.inc<br>
WRFDA/var/da/da_tracing/da_trace_entry.inc<br>
WRFDA/var/da/da_tracing/da_trace_exit.inc<br>
WRFDA/var/da/da_vtox_transforms/da_vertical_transform.inc </p>
<h1>Compile Problem for Program obsproc (Posted 2008-06-10) </h1>
<p class="bodytext"><strong>Problem</strong>: Compile fails on program obsproc. </p>
<p class="bodytext"><strong>Solution</strong>: Upgrade to a newer version of WRFDA (fixed in Version 3.0.1.1 and later)</p>
<h1>Compile Problem On IBMs (Posted 2008-06-10) </h1>
<p class="bodytext"><strong>Problem</strong>: Compile time very long on IBMs using xlf. </p>
<p class="bodytext"><strong>Solution</strong>: Check your configure.var file and reduce optimization level from O3 to O2. This has also been included in the updated tar file. </p>
<p class="bodytext"> </p>
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