<div dir="ltr"><div dir="ltr">On Tue, Apr 29, 2025 at 6:50 AM Klaij, Christiaan <<a href="mailto:C.Klaij@marin.nl">C.Klaij@marin.nl</a>> wrote:</div><div class="gmail_quote gmail_quote_container"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div>Here's a slightly better error message, obtained --with-debugging=1<br></div></div></blockquote><div><br></div><div>Is it possible that you have a mismatched EventBegin()/EventEnd() in your code? That could be why we cannot reproduce it here.</div><div><br></div><div>  Thanks,</div><div><br></div><div>      Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div>[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------<br>[0]PETSC ERROR: Petsc has generated inconsistent data<br>[0]PETSC ERROR: MPIU_Allreduce() called in different locations (code lines) on different processors<br>[0]PETSC ERROR: See <a href="https://urldefense.us/v3/__https://petsc.org/release/faq/__;!!G_uCfscf7eWS!eq1kivi8yzuD_s9lNwIeqkMg9dU4SC9grCBJnOhoALEg4iILbgybeYt5c__oPKrFt56W5KKM4Kab4LwmzLRI$" target="_blank">https://petsc.org/release/faq/</a> for trouble shooting.<br>[0]PETSC ERROR: Petsc Release Version 3.22.4, Mar 01, 2025<br>[0]PETSC ERROR: ./refresco with 2 MPI process(es) and PETSC_ARCH  on marclus3login2 by cklaij Tue Apr 29 12:43:54 2025<br>[0]PETSC ERROR: Configure options: --prefix=/home/cklaij/ReFRESCO/trunk/install/extLibs --with-mpi-dir=/cm/shared/apps/openmpi/gcc/4.0.2 --with-x=0 --with-mpe=0 --with-debugging=1 --download-superlu_dist=<a href="https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/superlu_dist-8.1.2.tar.gz__;!!G_uCfscf7eWS!eq1kivi8yzuD_s9lNwIeqkMg9dU4SC9grCBJnOhoALEg4iILbgybeYt5c__oPKrFt56W5KKM4Kab4MX1qQCC$" target="_blank">https://updates.marin.nl/refresco/libs/superlu_dist-8.1.2.tar.gz</a> --with-blaslapack-dir=/cm/shared/apps/intel/oneapi/mkl/2021.4.0 --download-parmetis=<a href="https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/parmetis-4.0.3-p9.tar.gz__;!!G_uCfscf7eWS!eq1kivi8yzuD_s9lNwIeqkMg9dU4SC9grCBJnOhoALEg4iILbgybeYt5c__oPKrFt56W5KKM4Kab4NVa8uiZ$" target="_blank">https://updates.marin.nl/refresco/libs/parmetis-4.0.3-p9.tar.gz</a> --download-metis=<a href="https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/metis-5.1.0-p11.tar.gz__;!!G_uCfscf7eWS!eq1kivi8yzuD_s9lNwIeqkMg9dU4SC9grCBJnOhoALEg4iILbgybeYt5c__oPKrFt56W5KKM4Kab4CbREwQV$" target="_blank">https://updates.marin.nl/refresco/libs/metis-5.1.0-p11.tar.gz</a> --with-packages-build-dir=/home/cklaij/ReFRESCO/trunk/build-libs/superbuild --with-ssl=0 --with-shared-libraries=1<br>[0]PETSC ERROR: #1 PetscLogNestedTreePrintLine() at /home/cklaij/ReFRESCO/trunk/build-libs/superbuild/petsc/src/src/sys/logging/handler/impls/nested/xmlviewer.c:289<br>[0]PETSC ERROR: #2 PetscLogNestedTreePrint() at /home/cklaij/ReFRESCO/trunk/build-libs/superbuild/petsc/src/src/sys/logging/handler/impls/nested/xmlviewer.c:379<br>[0]PETSC ERROR: #3 PetscLogNestedTreePrint() at /home/cklaij/ReFRESCO/trunk/build-libs/superbuild/petsc/src/src/sys/logging/handler/impls/nested/xmlviewer.c:384<br>[0]PETSC ERROR: #4 PetscLogNestedTreePrint() at /home/cklaij/ReFRESCO/trunk/build-libs/superbuild/petsc/src/src/sys/logging/handler/impls/nested/xmlviewer.c:384<br>[0]PETSC ERROR: #5 PetscLogNestedTreePrintTop() at /home/cklaij/ReFRESCO/trunk/build-libs/superbuild/petsc/src/src/sys/logging/handler/impls/nested/xmlviewer.c:420<br>[0]PETSC ERROR: #6 PetscLogHandlerView_Nested_XML() at /home/cklaij/ReFRESCO/trunk/build-libs/superbuild/petsc/src/src/sys/logging/handler/impls/nested/xmlviewer.c:443<br>[0]PETSC ERROR: #7 PetscLogHandlerView_Nested() at /home/cklaij/ReFRESCO/trunk/build-libs/superbuild/petsc/src/src/sys/logging/handler/impls/nested/lognested.c:405<br>[0]PETSC ERROR: #8 PetscLogHandlerView() at /home/cklaij/ReFRESCO/trunk/build-libs/superbuild/petsc/src/src/sys/logging/handler/interface/loghandler.c:342<br>[0]PETSC ERROR: #9 PetscLogView() at /home/cklaij/ReFRESCO/trunk/build-libs/superbuild/petsc/src/src/sys/logging/plog.c:2040<br>[0]PETSC ERROR: #10 /home/cklaij/ReFRESCO/trunk/Code/src/petsc_include_impl.F90:130<br><br>________________________________________<div dir="ltr" style="font-size:1px;direction:ltr"><table dir="ltr" cellpadding="0" cellspacing="0" border="0" style="width:100%;direction:ltr;border-collapse:collapse;font-size:1px"><tbody><tr style="font-size:0px"><td align="left" style="vertical-align:top"><table cellpadding="0" cellspacing="0" border="0" style="border-collapse:collapse;font-size:0px;line-height:normal"><tbody><tr style="font-size:0px"><td align="left" style="padding:10px 0px;vertical-align:top"><img src="cid:ii_19681617e7812ff9cfc1" width="125" height="40" border="0" alt="" style="width: 125px; min-width: 125px; max-width: 125px; height: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ompany/marin__;!!G_uCfscf7eWS!eq1kivi8yzuD_s9lNwIeqkMg9dU4SC9grCBJnOhoALEg4iILbgybeYt5c__oPKrFt56W5KKM4Kab4GcxXOHk$" id="m_3796697680995711412LPlnk689713" style="text-decoration:none" target="_blank"><img src="cid:ii_19681617e78980d059e3" width="15" height="15" border="0" title="LinkedIn" alt="LinkedIn" style="width: 15px; min-width: 15px; max-width: 15px; height: 15px; min-height: 15px; max-height: 15px; font-size: 12px;"></a></td></tr></tbody></table></td><td align="left" style="vertical-align:top"><table cellpadding="0" cellspacing="0" border="0" style="border-collapse:collapse;font-size:0px;line-height:normal"><tbody><tr style="font-size:0px"><td align="left" style="padding:0px 3px 3px 0px;vertical-align:top"><a href="https://urldefense.us/v3/__https://www.youtube.com/marinmultimedia__;!!G_uCfscf7eWS!eq1kivi8yzuD_s9lNwIeqkMg9dU4SC9grCBJnOhoALEg4iILbgybeYt5c__oPKrFt56W5KKM4Kab4AzBikZl$" id="m_3796697680995711412LPlnk689713" style="text-decoration:none" target="_blank"><img src="cid:ii_19681617e789ec5abf84" width="15" height="15" border="0" title="YouTube" alt="YouTube" style="width: 15px; min-width: 15px; max-width: 15px; height: 15px; min-height: 15px; max-height: 15px; font-size: 12px;"></a></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table></div><br>From: Klaij, Christiaan <<a href="mailto:C.Klaij@marin.nl" target="_blank">C.Klaij@marin.nl</a>><br>Sent: Monday, April 28, 2025 3:53 PM<br>To: Matthew Knepley<br>Cc: Junchao Zhang; <a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>; Isaac, Toby<br>Subject: Re: [petsc-users] problem with nested logging<br><br>Bisecting would be quite hard, it's not just the petsc version that changed, also other libs, compilers, even os components.<br><br>Chris<br><br>________________________________________<br>From: Matthew Knepley <<a href="mailto:knepley@gmail.com" target="_blank">knepley@gmail.com</a>><br>Sent: Monday, April 28, 2025 3:06 PM<br>To: Klaij, Christiaan<br>Cc: Junchao Zhang; <a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>; Isaac, Toby<br>Subject: Re: [petsc-users] problem with nested logging<br><br>You don't often get email from <a href="mailto:knepley@gmail.com" target="_blank">knepley@gmail.com</a>. Learn why this is important<<a href="https://urldefense.us/v3/__https://aka.ms/LearnAboutSenderIdentification__;!!G_uCfscf7eWS!eq1kivi8yzuD_s9lNwIeqkMg9dU4SC9grCBJnOhoALEg4iILbgybeYt5c__oPKrFt56W5KKM4Kab4Me9_aLp$" target="_blank">https://aka.ms/LearnAboutSenderIdentification</a>><br>On Mon, Apr 28, 2025 at 8:45 AM Klaij, Christiaan via petsc-users <<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a><mailto:<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>>> wrote:<br>I've tried adding a nested log viewer to src/snes/tutorials/ex70.c,<br>but it does not replicate the problem and works fine.<br><br>Perhaps it is related to fortran, since the manualpage of<br>PetscLogNestedBegin says "No fortran support" (why? we've been<br>using it in fortran ever since).<br><br>Therefore I've tried adding it to src/snes/ex5f90.F90 and that<br>also works fine. It seems I cannot replicate the problem in a<br>small example, unfortunately.<br><br>We cannot replicate it here. Is there a chance you could bisect to see what change is responsible?<br><br>  Thanks,<br><br>     Matt<br><br>Chris<br><br>________________________________________<br>From: Junchao Zhang <<a href="mailto:junchao.zhang@gmail.com" target="_blank">junchao.zhang@gmail.com</a><mailto:<a href="mailto:junchao.zhang@gmail.com" target="_blank">junchao.zhang@gmail.com</a>>><br>Sent: Saturday, April 26, 2025 3:51 PM<br>To: Klaij, Christiaan<br>Cc: <a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a><mailto:<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>>; Isaac, Toby<br>Subject: Re: [petsc-users] problem with nested logging<br><br>You don't often get email from <a href="mailto:junchao.zhang@gmail.com" target="_blank">junchao.zhang@gmail.com</a><mailto:<a href="mailto:junchao.zhang@gmail.com" target="_blank">junchao.zhang@gmail.com</a>>. Learn why this is important<<a href="https://urldefense.us/v3/__https://aka.ms/LearnAboutSenderIdentification__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6gVgt1dmE$" target="_blank">https://urldefense.us/v3/__https://aka.ms/LearnAboutSenderIdentification__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6gVgt1dmE$</a> ><br>Toby (Cc'ed) might know it.  Or could you provide an example?<br><br>--Junchao Zhang<br><br><br>On Fri, Apr 25, 2025 at 3:31 AM Klaij, Christiaan via petsc-users <<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a><mailto:<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>><mailto:<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a><mailto:<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>>>> wrote:<br>We recently upgraded from 3.19.4 to 3.22.4 but face the problem below with the nested logging. Any ideas?<br><br>Chris<br><br><br>[1]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------<br>[1]PETSC ERROR: General MPI error<br>[1]PETSC ERROR: MPI error 1 MPI_ERR_BUFFER: invalid buffer pointer<br>[1]PETSC ERROR: See <a href="https://urldefense.us/v3/__https://petsc.org/release/faq/__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6gIT68pbk$" target="_blank">https://urldefense.us/v3/__https://petsc.org/release/faq/__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6gIT68pbk$</a> <<a href="https://urldefense.us/v3/__https://petsc.org/release/faq/__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGM3UaqHzc$" target="_blank">https://urldefense.us/v3/__https://petsc.org/release/faq/__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGM3UaqHzc$</a>> for trouble shooting.<br>[1]PETSC ERROR: Petsc Release Version 3.22.4, Mar 01, 2025<br>[1]PETSC ERROR: refresco with 2 MPI process(es) and PETSC_ARCH on marclus3login2 by jwindt Fri Apr 25 08:52:30 2025<br>[1]PETSC ERROR: Configure options: --prefix=/home/jwindt/cmake_builds/refresco/install-libs-gnu --with-mpi-dir=/cm/shared/apps/openmpi/gcc/4.0.2 --with-x=0 --with-mpe=0 --with-debugging=0 --download-superlu_dist=<a href="https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/superlu_dist-8.1.2.tar.gz__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6grH5BbeU$" target="_blank">https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/superlu_dist-8.1.2.tar.gz__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6grH5BbeU$</a> <<a href="https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/superlu_dist-8.1.2.tar.gz__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGM21-2D-o$" target="_blank">https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/superlu_dist-8.1.2.tar.gz__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGM21-2D-o$</a>> --with-blaslapack-dir=/cm/shared/apps/intel/oneapi/mkl/2021.4.0 --download-parmetis=<a href="https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/parmetis-4.0.3-p9.tar.gz__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6gw4-tEtY$" target="_blank">https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/parmetis-4.0.3-p9.tar.gz__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6gw4-tEtY$</a> <<a href="https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/parmetis-4.0.3-p9.tar.gz__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGMW0lYHko$" target="_blank">https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/parmetis-4.0.3-p9.tar.gz__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGMW0lYHko$</a>> --download-metis=<a href="https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/metis-5.1.0-p11.tar.gz__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6gHq4uYiY$" target="_blank">https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/metis-5.1.0-p11.tar.gz__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6gHq4uYiY$</a> <<a href="https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/metis-5.1.0-p11.tar.gz__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGMbSrIiUg$" target="_blank">https://urldefense.us/v3/__https://updates.marin.nl/refresco/libs/metis-5.1.0-p11.tar.gz__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGMbSrIiUg$</a>> --with-packages-build-dir=/home/jwindt/cmake_builds/refresco/build-libs-gnu/superbuild --with-ssl=0 --with-shared-libraries=1 CFLAGS="-std=gnu11 -Wall -funroll-all-loops -O3 -DNDEBUG" CXXFLAGS="-std=gnu++14 -Wall -funroll-all-loops -O3 -DNDEBUG " COPTFLAGS="-std=gnu11 -Wall -funroll-all-loops -O3 -DNDEBUG" CXXOPTFLAGS="-std=gnu++14 -Wall -funroll-all-loops -O3 -DNDEBUG " FCFLAGS="-Wall -funroll-all-loops -ffree-line-length-0 -Wno-maybe-uninitialized -Wno-target-lifetime -Wno-unused-function -O3 -DNDEBUG" F90FLAGS="-Wall -funroll-all-loops -ffree-line-length-0 -Wno-maybe-uninitialized -Wno-target-lifetime -Wno-unused-function -O3 -DNDEBUG" FOPTFLAGS="-Wall -funroll-all-loops -ffree-line-length-0 -Wno-maybe-uninitialized -Wno-target-lifetime -Wno-unused-function -O3 -DNDEBUG"<br>[1]PETSC ERROR: #1 PetscLogNestedTreePrint() at /home/jwindt/cmake_builds/refresco/build-libs-gnu/superbuild/petsc/src/src/sys/logging/handler/impls/nested/xmlviewer.c:330<br>[1]PETSC ERROR: #2 PetscLogNestedTreePrint() at /home/jwindt/cmake_builds/refresco/build-libs-gnu/superbuild/petsc/src/src/sys/logging/handler/impls/nested/xmlviewer.c:384<br>[1]PETSC ERROR: #3 PetscLogNestedTreePrint() at /home/jwindt/cmake_builds/refresco/build-libs-gnu/superbuild/petsc/src/src/sys/logging/handler/impls/nested/xmlviewer.c:384<br>[1]PETSC ERROR: #4 PetscLogNestedTreePrintTop() at /home/jwindt/cmake_builds/refresco/build-libs-gnu/superbuild/petsc/src/src/sys/logging/handler/impls/nested/xmlviewer.c:420<br>[1]PETSC ERROR: #5 PetscLogHandlerView_Nested_XML() at /home/jwindt/cmake_builds/refresco/build-libs-gnu/superbuild/petsc/src/src/sys/logging/handler/impls/nested/xmlviewer.c:443<br>[1]PETSC ERROR: #6 PetscLogHandlerView_Nested() at /home/jwindt/cmake_builds/refresco/build-libs-gnu/superbuild/petsc/src/src/sys/logging/handler/impls/nested/lognested.c:405<br>[1]PETSC ERROR: #7 PetscLogHandlerView() at /home/jwindt/cmake_builds/refresco/build-libs-gnu/superbuild/petsc/src/src/sys/logging/handler/interface/loghandler.c:342<br>[1]PETSC ERROR: #8 PetscLogView() at /home/jwindt/cmake_builds/refresco/build-libs-gnu/superbuild/petsc/src/src/sys/logging/plog.c:2040<br>--------------------------------------------------------------------------<br>MPI_ABORT was invoked on rank 1 in communicator MPI_COMM_WORLD<br>with errorcode 98.<br><br>NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.<br>You may or may not see output from other processes, depending on<br>exactly when Open MPI kills them.<br>--------------------------------------------------------------------------<br>[cid:ii_196725d1e2a809852191]<br>dr. ir.     Christiaan       Klaij<br> |      senior researcher        |      Research & Development   |      CFD Development<br>T +31 317 49 33 44<tel:+31%20317%2049%2033%2044>         |       <a href="mailto:C.Klaij@marin.nl" target="_blank">C.Klaij@marin.nl</a><mailto:<a href="mailto:C.Klaij@marin.nl" target="_blank">C.Klaij@marin.nl</a>><mailto:<a href="mailto:C.Klaij@marin.nl" target="_blank">C.Klaij@marin.nl</a><mailto:<a href="mailto:C.Klaij@marin.nl" target="_blank">C.Klaij@marin.nl</a>>>      | <a href="https://urldefense.us/v3/__http://www.marin.nl__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6g8TwMMcw$" target="_blank">https://urldefense.us/v3/__http://www.marin.nl__;!!G_uCfscf7eWS!cmLENZvO_Uydoa8ciUmsyX-F-QiJt9a2ZfQRUvQnRibGm7VE6PED7S_BDsUgjOzvPZIJyiIoJ8bLJk6g8TwMMcw$</a> <<a href="https://urldefense.us/v3/__https://www.marin.nl/__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGM8tSNH1g$" target="_blank">https://urldefense.us/v3/__https://www.marin.nl/__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGM8tSNH1g$</a>><br>[Facebook]<<a href="https://urldefense.us/v3/__https://www.facebook.com/marin.wageningen__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGMcVCZ9hk$" target="_blank">https://urldefense.us/v3/__https://www.facebook.com/marin.wageningen__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGMcVCZ9hk$</a>><br>[LinkedIn]<<a href="https://urldefense.us/v3/__https://www.linkedin.com/company/marin__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGMIDBZW7k$" target="_blank">https://urldefense.us/v3/__https://www.linkedin.com/company/marin__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGMIDBZW7k$</a>><br>[YouTube]<<a href="https://urldefense.us/v3/__https://www.youtube.com/marinmultimedia__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGMVKWos24$" target="_blank">https://urldefense.us/v3/__https://www.youtube.com/marinmultimedia__;!!G_uCfscf7eWS!biVlk6PKXoJvq5oVlmWdVJfW9tXv-JlwuWr3zg3jI5u1_jo8rvtZpEYnHO5RjdBqQEoqpqlJ3nusrFGMVKWos24$</a>><br><br><br>--<br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener<br><br><a href="https://urldefense.us/v3/__https://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!eq1kivi8yzuD_s9lNwIeqkMg9dU4SC9grCBJnOhoALEg4iILbgybeYt5c__oPKrFt56W5KKM4Kab4Go3vEyJ$" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><<a href="https://urldefense.us/v3/__http://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!eq1kivi8yzuD_s9lNwIeqkMg9dU4SC9grCBJnOhoALEg4iILbgybeYt5c__oPKrFt56W5KKM4Kab4NWbA6Qw$" target="_blank">http://www.cse.buffalo.edu/~knepley/</a>><br></div></div></blockquote></div><div><br clear="all"></div><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="https://urldefense.us/v3/__http://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!eq1kivi8yzuD_s9lNwIeqkMg9dU4SC9grCBJnOhoALEg4iILbgybeYt5c__oPKrFt56W5KKM4Kab4NWbA6Qw$" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div></div></div></div>