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Hello,
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<div>You likely need to add “-fallow-argument-mismatch” to your compiler flags (FFLAGS_OPT and FFLAGS_DEBUG) in Makefile.h. </div>
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<div>—</div>
<div><b>Eddie Hansen</b></div>
<div>Applications Group Leader</div>
<div>Flash Center for Computational Science</div>
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<div>On Mar 30, 2026, at 5:11 AM, 黄翌轩 <yixuan-h22@mails.tsinghua.edu.cn> wrote:</div>
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<div style="margin: 0px;">Dear FLASH Community,</div>
<div style="margin: 0px;">I was trying to build the<span class="Apple-converted-space"> </span><code>LaserSlab</code> problem in FLASH 4.8 on Ubuntu, but during my build process, it turned out wrong that there's an error in Driver_computeDt.F90, which called:</div>
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<div style="margin: 0px;">Makefile:131: warning: pattern recipe did not update peer target 'Driver_computeCellLocations.mod'.</div>
<div style="margin: 0px;">/usr/bin/mpif90 -ggdb -c -O2 -fdefault-real-8 -fdefault-double-8 -Wuninitialized -DMAXBLOCKS=1000 -DNXB=8 -DNYB=8 -DNZB=1 -DN_DIM=2 Driver_computeDt.F90</div>
<div style="margin: 0px;">Driver_computeDt.F90:544:20:</div>
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<div style="margin: 0px;"> 536 | call MPI_Bcast(dtMinLoc(1), 5, MPI_INTEGER, pgmin, dr_globalComm, error)</div>
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<div style="margin: 0px;"> | 2 </div>
<div style="margin: 0px;">......</div>
<div style="margin: 0px;"> 544 | call MPI_Bcast(extraHydroInfo, 1, FLASH_REAL, pgmin, dr_globalComm, error)</div>
<div style="margin: 0px;"> | 1</div>
<div style="margin: 0px;">Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/INTEGER(4)).</div>
<div style="margin: 0px;">Driver_computeDt.F90:549:20:</div>
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<div style="margin: 0px;"> 536 | call MPI_Bcast(dtMinLoc(1), 5, MPI_INTEGER, pgmin, dr_globalComm, error)</div>
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<div style="margin: 0px;"> | 2 </div>
<div style="margin: 0px;">......</div>
<div style="margin: 0px;"> 549 | call MPI_Bcast(extraHydroInfo, 1, FLASH_REAL, pgmin, dr_globalComm, error)</div>
<div style="margin: 0px;"> | 1</div>
<div style="margin: 0px;">Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/INTEGER(4)).</div>
<div style="margin: 0px;">make: *** [Makefile:132：Driver_computeDt.o] error 1</div>
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<div style="margin: 0px;"><strong></strong>Any guidance would be greatly appreciated.</div>
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<div style="margin: 0px;">Thank you.</div>
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<div style="margin: 0px;">Best regards,</div>
<div style="margin: 0px;">Yixuan Huang</div>
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<span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">flash-users
mailing list</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<a href="mailto:flash-users@flash.rochester.edu" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;">flash-users@flash.rochester.edu</a><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
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<a href="https://flash.rochester.edu/mailman/listinfo/flash-users" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;">https://flash.rochester.edu/mailman/listinfo/flash-users</a></div>
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