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Thank you very much, adding -std=legacy to gfortrans compiler flags has solved the problem. On Mon, 20 Oct 2025 at 02: 32, fistrosan via discuss <discuss@ mpich. org> wrote: If Gregor's answer does not solve it try adding -std=legacy</div>
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<div dir="ltr"><div>Thank you very much, adding -std=legacy to gfortrans compiler flags has solved the problem.<br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, 20 Oct 2025 at 02:32, fistrosan via discuss <<a href="mailto:discuss@mpich.org">discuss@mpich.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg7565760863795634595">

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If Gregor's answer does not solve it try adding -std=legacy to gfortrans compiler flags. Sent from Proton Mail for Android. -------- Original Message -------- On Friday, 10/17/25 at 14: 26 Gregor Corbin via discuss <discuss@ mpich. org> wrote: </div>



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<div>If Gregor's answer does not solve it try adding -std=legacy to gfortrans compiler flags.<br><br><div></div><br><br>Sent from <a href="https://urldefense.us/v3/__https://proton.me/mail/home__;!!G_uCfscf7eWS!dJKfTCTptV3q_0XDUIiQwsCbaMLbK_wpBUXQlGXJt8y6y91CgHIQadcRpG5GNGcfc6H4q7ws1mpT-QJAKUY$" rel="noreferrer" target="_blank">Proton Mail</a> for Android.<div><br><br>-------- Original Message --------<br>On Friday, 10/17/25 at 14:26 Gregor Corbin via discuss <<a href="mailto:discuss@mpich.org" target="_blank">discuss@mpich.org</a>> wrote:<br><blockquote>
    <p>Hi, <br>
    </p>
    <p>let me guess: this code uses `include mpif.h` and is compiled
      with gfortran. If so, try to add `-fallow-argument-mismatch' to
      your compiler flags. </p>
    <p>Explanation: With the include file, there are no explicit
      interfaces and the compiler generates an implicit interface from
      the call to `MPI_IRECV`. Having two calls with different argument
      types is an error since some gcc version (10 IIRC). <br>
    </p>
    <p>Cheers, <br>
    </p>
    <p>Gregor Corbin</p>
    <p><br>
    </p>
    <div>On 17.10.25 13:30, phani sri via
      discuss wrote:<br>
    </div>
    <blockquote type="cite">

      
      
      
      
      <div style="font-size:1px;color:rgb(255,255,255);line-height:1px;height:0px;max-height:0px;opacity:0;overflow:hidden;display:none">
        Hi all, I am trying to run FLASH4. 8, where I am getting the
        following error. Can someone please, suggest to me why this
        error is coming. Thank you in advance. 497 |            Call
        MPI_IRECV(parentt(1,i),2,MPI_INTEGER,                &  </div>
      
      
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        <div>Hi all, I am trying to run FLASH4.8, where I am getting the
          following error. Can someone please, suggest to me why this
          error is coming.</div>
        <div>Thank you in advance.</div>
        <div>
          <div>497 |            Call
            MPI_IRECV(parentt(1,i),2,MPI_INTEGER,                &<br>
                  |                          2<br>
            ......<br>
              633 |         Call MPI_IRECV(buffert(1,i),buf_size,      
                             &<br>
                  |                       1<br>
            Error: Type mismatch between actual argument at (1) and
            actual argument at (2) (REAL(8)/INTEGER(4)).<br>
            amr_migrate_tree_data.F90:642:23:<br>
            <br>
              497 |            Call
            MPI_IRECV(parentt(1,i),2,MPI_INTEGER,                &<br>
                  |                          2<br>
            ......<br>
              642 |         Call MPI_IRECV(newchildt(i),1,MPI_LOGICAL,  
                            &<br>
                  |                       1<br>
            Error: Type mismatch between actual argument at (1) and
            actual argument at (2) (LOGICAL(4)/INTEGER(4)).<br>
            amr_migrate_tree_data.F90:717:23:<br>
            <br>
              513 |               Call MPI_SSEND
            (new_loc(1,i),2,MPI_INTEGER,             &<br>
                  |                              2<br>
            ......<br>
              717 |         Call
            MPI_SSEND(buffer(1),buf_size,amr_mpi_real,            
             &<br>
                  |                       1<br>
            Error: Type mismatch between actual argument at (1) and
            actual argument at (2) (REAL(8)/INTEGER(4)).<br>
            amr_migrate_tree_data.F90:725:23:<br>
            <br>
              513 |               Call MPI_SSEND
            (new_loc(1,i),2,MPI_INTEGER,             &<br>
                  |                              2<br>
            ......<br>
              725 |         Call MPI_SSEND(newchild(i),1,MPI_LOGICAL,  
                             &<br>
                  |                       1<br>
            Error: Type mismatch between actual argument at (1) and
            actual argument at (2) (LOGICAL(4)/INTEGER(4)).<br>
            amr_migrate_tree_data.F90:260:25:<br>
            <br>
              260 |           Call MPI_IRECV(buffert(1,i),buf_size,    
                               &<br>
                  |                         1<br>
            ......<br>
              497 |            Call
            MPI_IRECV(parentt(1,i),2,MPI_INTEGER,                &<br>
                  |                          2<br>
            Error: Type mismatch between actual argument at (1) and
            actual argument at (2) (REAL(8)/INTEGER(4)).<br>
            amr_migrate_tree_data.F90:269:25:<br>
            <br>
              269 |           Call MPI_IRECV(newchildt(i),1,MPI_LOGICAL,
                              &<br>
                  |                         1<br>
            ......<br>
              497 |            Call
            MPI_IRECV(parentt(1,i),2,MPI_INTEGER,                &<br>
                  |                          2<br>
            Error: Type mismatch between actual argument at (1) and
            actual argument at (2) (LOGICAL(4)/INTEGER(4)).<br>
            amr_migrate_tree_data.F90:330:25:<br>
            <br>
              330 |           Call
            MPI_SSEND(buffer(1),buf_size,amr_mpi_real,            
             &<br>
                  |                         1<br>
            ......<br>
              513 |               Call MPI_SSEND
            (new_loc(1,i),2,MPI_INTEGER,             &<br>
                  |                              2<br>
            Error: Type mismatch between actual argument at (1) and
            actual argument at (2) (REAL(8)/INTEGER(4)).<br>
            amr_migrate_tree_data.F90:338:25:<br>
            <br>
              338 |           Call MPI_SSEND(newchild(i),1,MPI_LOGICAL,
                               &<br>
                  |                         1<br>
            ......<br>
              513 |               Call MPI_SSEND
            (new_loc(1,i),2,MPI_INTEGER,             &<br>
                  |                              2<br>
            Error: Type mismatch between actual argument at (1) and
            actual argument at (2) (LOGICAL(4)/INTEGER(4)).<br>
            amr_restrict_ec_genorder.F90:310:37:</div>
          <br>
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        <br>
        <span class="gmail_signature_prefix">-- </span><br>
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                            <div><font color="#0000ff"><b>Dr. D. P. S.
                                  L. Kameswari</b></font><b><br>
                              </b><br>
                            </div>
                          </div>
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</div></blockquote></div><div><br clear="all"></div><br><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><div dir="ltr"><div><div dir="ltr"><div><font color="#0000ff"><b>Dr. D. P. S. L. Kameswari</b></font><b><br></b><br></div></div></div></div></div></div></div></div></div></div></div>