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I do not know what compiler you are using and you also did not tell me whether you are ruinning a MACARM or MACINT "architecture".  We use a rather old gfortran (6 or so) in MACINT and that did not have this issue.  MACARM requires a recent gfortran since it
 is a recent new chip and that has this problem.  I attach OPTIMIZE.LIS which needs to be in your $SYSUNIX area.  Then</div>
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COMRPL $APLOOP/INTERPLATE  - and check that it does not optimize (-g is no opt)</div>
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Then COMLNK $APGOOP/FLATN and other tasks like OGEOM.</div>
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Eric Greisen</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Arti Goyal <arti.goyal@uj.edu.pl><br>
<b>Sent:</b> Tuesday, September 10, 2024 7:19 AM<br>
<b>To:</b> Eric Greisen <egreisen@nrao.edu><br>
<b>Cc:</b> daip <daip@nrao.edu><br>
<b>Subject:</b> Re: [daip] Issue with FLATN (AIPS 2023) {External}</font>
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<p class="x_MsoNormal"><span style="font-size:11.0pt">Dear Prof Greisen,</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Thanks for your prompt replies. I did the steps as you suggested below, and all the steps finished successfully. However, the problem still persists with the flatn task.  </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">##</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">LOCALH> TPMON1: Begins on 2024.09.10 15:12:36</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">LOCALH> FLATN1: Task FLATN  (release of 31DEC23) begins</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">LOCALH> FLATN1: Create TEST        .FLATN .   2 (MA)  on disk  1  cno  465</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">LOCALH> FLATN1: Field     1 included blc,trc   253  2247   773  2767</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">LOCALH> FLATN1: ZABORS: signal 15 received</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">LOCALH> FLATN1: ABORT!</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">##</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Please let me know what you think.</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Thank you.</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Best regards,</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt">Arti Goyal</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
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<p class="x_MsoNormal" style="margin-bottom:12.0pt"><b><span style="color:black">From:
</span></b><span style="color:black">Eric Greisen <egreisen@nrao.edu><br>
<b>Date: </b>Friday, September 6, 2024 at 18:47<br>
<b>To: </b>Arti Goyal <arti.goyal@uj.edu.pl><br>
<b>Cc: </b>daip <daip@nrao.edu><br>
<b>Subject: </b>Re: [daip] Issue with FLATN (AIPS 2023) {External}</span></p>
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<p style=""><strong><span style="font-size:9.0pt; font-family:"Aptos",sans-serif; color:black">UWAGA:</span></strong><span style="font-size:9.0pt; color:black"> Wiadomość pochodzi od zewnętrznego nadawcy.</span></p>
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<p class="x_MsoNormal"><span style="color:black">You need to add a line to $SYSUNIX/OPTIMIZE.LIS  setting routine name INTERPLATE on MACARM to 0 0 optimization.  Then COMRPL $APLOOP/INTERPLATE.  The COMLNK/$APGOOP/*.FOR and COMLNK $QPGOOP/*.FOR.  Apparently
 recent gfortran versions do something bad in this collection of routines used in regridding images (FLATN, OGEOM, OHGEO, and more).</span><span style="color:black"></span></p>
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<p class="x_MsoNormal"><span style="color:black">Thanks for reporting this.</span></p>
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<p class="x_MsoNormal"><span style="color:black"> </span></p>
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<p class="x_MsoNormal"><span style="color:black">Eric Greisen</span></p>
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<p class="x_MsoNormal"><b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:black">From:</span></b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:black"> Daip <daip-bounces@listmgr.nrao.edu> on behalf of Arti Goyal
 via Daip <daip@listmgr.nrao.edu><br>
<b>Sent:</b> Thursday, September 5, 2024 2:25 AM<br>
<b>To:</b> aipsmail <aipsmail@nrao.edu><br>
<b>Subject:</b> [daip] Issue with FLATN (AIPS 2023) {External}</span> </p>
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<p class="x_xmsonormal"><span style="font-size:11.0pt">Dear colleague,</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">I have text installed AIPS 2023 on my Macbook Pro and it’s running smoothly. I am encountering a problem while running the task FLATN. Here I want to interpolate 25 fields into one as I have performed a
 wide-field imaging (610 MHz data from GMRT telescope in India).  The problem is that the task starts but doesn’t finish no matter how long I let take and I need to abort to get the terminal back. The resulting FLATNed image is junk without any intensities.</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">##</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">LOCALH> FLATN1: Task FLATN  (release of 31DEC23) begins</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">LOCALH> FLATN1: Create HDFN        .FLATN .   1 (MA)  on disk  1  cno  361</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">LOCALH> FLATN1: Field     1 included blc,trc   253  2247   773  2767</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">LOCALH> FLATN1: ZABORS: signal 15 received</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">LOCALH> FLATN1: ABORT!</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">##</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">The image header of the FLATNed image:</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Got(1)   disk= 1  user= 100   type=MA   HDFN.FLATN.1</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Image=HDF-N     (MA)         Filename=HDFN        .FLATN .   1</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Telescope=GMRT               Receiver=GMRT</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Observer=TOM                 User #=  100</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Observ. date=01-APR-2007     Map date=04-SEP-2024</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Pixel type: FLOATING         Magic value blanking</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Minimum= 1.00000002E+20      Maximum=-1.00000002E+20 JY/BEAM</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: ----------------------------------------------------------------</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Type    Pixels   Coord value      at Pixel    Coord incr   Rotat</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: RA---SIN  3000    12 36 49.403515  1500.00        -1.380    0.00</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: DEC--SIN  3000    62 12 57.973953  1501.00         1.380    0.00</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: FREQ         1   6.1737502E+08        1.00  1.375000E+07    0.00</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: STOKES       1   1.0000000E+00        1.00  1.000000E+00    0.00</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: ----------------------------------------------------------------</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Coordinate equinox 2000.00</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Map type=NORMAL              Number of iterations=    2413</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Conv size=   7.08 X   5.92   Position angle=  28.46</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Rest freq      0.000         Vel type: RADIO   wrt YOU</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Alt ref. value  0.00000E+00  wrt pixel    0.45</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Keyword = 'WTNOISE '  value =  1.13333679D+00</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Keyword = 'SUMWTIN '  value =  1.42178117D+08</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Keyword = 'CCFLUX  '  value =  2.569658E-02</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Keyword = 'CCTOTAL '  value =  1.265699E+00</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">AIPS 1: Keyword = 'MAXABSU '  value = -1.000000E+00</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">##</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">My box file for creating 25 fields is as below:</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_xp1"><span class="x_xs1">F 1</span><span class="x_xapple-converted-space">   
</span><span class="x_xs1">512 512</span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">1380 </span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">1380</span></p>
<p class="x_xp1"><span class="x_xs1">F 2</span><span class="x_xapple-converted-space">   
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">690 </span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">1380</span></p>
<p class="x_xp1"><span class="x_xs1">F 3</span><span class="x_xapple-converted-space">   
</span><span class="x_xs1">512 512</span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">0</span><span class="x_xapple-converted-space">      </span>
<span class="x_xs1">1380</span></p>
<p class="x_xp1"><span class="x_xs1">F 4</span><span class="x_xapple-converted-space">   
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">-690 </span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">1380</span></p>
<p class="x_xp1"><span class="x_xs1">F 5</span><span class="x_xapple-converted-space">   
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">-1380</span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">1380</span></p>
<p class="x_xp1"><span class="x_xs1">F 6</span><span class="x_xapple-converted-space">   
</span><span class="x_xs1">512 512</span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">1380 </span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">690</span></p>
<p class="x_xp1"><span class="x_xs1">F 7</span><span class="x_xapple-converted-space">   
</span><span class="x_xs1">512 512</span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">690</span><span class="x_xapple-converted-space">    </span>
<span class="x_xs1">690</span></p>
<p class="x_xp1"><span class="x_xs1">F 8</span><span class="x_xapple-converted-space">   
</span><span class="x_xs1">512 512</span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">0 </span><span class="x_xapple-converted-space">      </span>
<span class="x_xs1">690</span></p>
<p class="x_xp1"><span class="x_xs1">F 9</span><span class="x_xapple-converted-space">   
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">-690</span><span class="x_xapple-converted-space">    </span>
<span class="x_xs1">690</span></p>
<p class="x_xp1"><span class="x_xs1">F 10 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">-1380 </span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">690</span></p>
<p class="x_xp1"><span class="x_xs1">F 11 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512</span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">1380 </span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">0</span></p>
<p class="x_xp1"><span class="x_xs1">F 12 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">690 </span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">0</span></p>
<p class="x_xp1"><span class="x_xs1">F 13 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">0 0</span></p>
<p class="x_xp1"><span class="x_xs1">F 14 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">-690 </span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">0</span></p>
<p class="x_xp1"><span class="x_xs1">F 15 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">-1380</span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">0</span></p>
<p class="x_xp1"><span class="x_xs1">F 16 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512</span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">1380</span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">-690</span></p>
<p class="x_xp1"><span class="x_xs1">F 17 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">690</span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">-690</span></p>
<p class="x_xp1"><span class="x_xs1">F 18 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">0 </span><span class="x_xapple-converted-space">    </span>
<span class="x_xs1">-690</span></p>
<p class="x_xp1"><span class="x_xs1">F 19 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">-690</span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">-690</span></p>
<p class="x_xp1"><span class="x_xs1">F 20 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">-1380 -690</span></p>
<p class="x_xp1"><span class="x_xs1">F 21 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512</span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">1380</span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">-1380</span></p>
<p class="x_xp1"><span class="x_xs1">F 22 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512</span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">690 </span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">-1380</span></p>
<p class="x_xp1"><span class="x_xs1">F 23 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">0</span><span class="x_xapple-converted-space">    </span>
<span class="x_xs1">-1380</span></p>
<p class="x_xp1"><span class="x_xs1">F 24 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512</span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">-690</span><span class="x_xapple-converted-space">  </span>
<span class="x_xs1">-1380</span></p>
<p class="x_xp1"><span class="x_xs1">F 25 </span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">512 512</span><span class="x_xapple-converted-space"> 
</span><span class="x_xs1">-1380 -1380</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">##</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">I will greatly appreciate any help in this regard.</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">Thank you.</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt">Arti Goyal</span></p>
<p class="x_xmsonormal"><span style="font-size:11.0pt"> </span></p>
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