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Hi Gregor, I have checked this, the code is using mpi. h not mpif. h. Dr. D. P. S. L. Kameswari On Fri, 17 Oct 2025, 5: 56 pm Gregor Corbin via discuss, <discuss@ mpich. org> wrote: Hi, let me guess: this code uses `include mpif. h` and is compiled</div>
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<div dir="auto"><div dir="auto"><div>Hi Gregor, I  have checked this, the code is using mpi.h not mpif.h.</div><div><br></div><div data-smartmail="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></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 17 Oct 2025, 5:56 pm Gregor Corbin via discuss, <<a href="mailto:discuss@mpich.org" target="_blank" rel="noreferrer">discuss@mpich.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>

  
    
  
  <div>
    <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="display:none!important;display:none;font-size:1px;color:#ffffff;line-height:1px;height:0px;max-height:0px;opacity:0;overflow:hidden">
        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>
        </div>
        <div><br>
        </div>
        <br>
        <span class="gmail_signature_prefix">-- </span><br>
        <div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">
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                    <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>
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              </div>
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      <br>
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