Hi, 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. 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). Cheers, Gregor Corbin On 17.10.25 13:30, phani sri via discuss wrote:

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,                & ZjQcmQRYFpfptBannerStart This Message Is From an External Sender This message came from outside your organization. ZjQcmQRYFpfptBannerEnd 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,                &       |                          2 ......   633 |         Call MPI_IRECV(buffert(1,i),buf_size,                  &       |                       1 Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/INTEGER(4)). amr_migrate_tree_data.F90:642:23:

  497 |            Call MPI_IRECV(parentt(1,i),2,MPI_INTEGER,                &       |                          2 ......   642 |         Call MPI_IRECV(newchildt(i),1,MPI_LOGICAL,                 &       |                       1 Error: Type mismatch between actual argument at (1) and actual argument at (2) (LOGICAL(4)/INTEGER(4)). amr_migrate_tree_data.F90:717:23:

  513 |               Call MPI_SSEND (new_loc(1,i),2,MPI_INTEGER,             &       |                              2 ......   717 |         Call MPI_SSEND(buffer(1),buf_size,amr_mpi_real,  &       |                       1 Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/INTEGER(4)). amr_migrate_tree_data.F90:725:23:

  513 |               Call MPI_SSEND (new_loc(1,i),2,MPI_INTEGER,             &       |                              2 ......   725 |         Call MPI_SSEND(newchild(i),1,MPI_LOGICAL,                  &       |                       1 Error: Type mismatch between actual argument at (1) and actual argument at (2) (LOGICAL(4)/INTEGER(4)). amr_migrate_tree_data.F90:260:25:

  260 |           Call MPI_IRECV(buffert(1,i),buf_size,                    &       |                         1 ......   497 |            Call MPI_IRECV(parentt(1,i),2,MPI_INTEGER,                &       |                          2 Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/INTEGER(4)). amr_migrate_tree_data.F90:269:25:

  269 |           Call MPI_IRECV(newchildt(i),1,MPI_LOGICAL,                   &       |                         1 ......   497 |            Call MPI_IRECV(parentt(1,i),2,MPI_INTEGER,                &       |                          2 Error: Type mismatch between actual argument at (1) and actual argument at (2) (LOGICAL(4)/INTEGER(4)). amr_migrate_tree_data.F90:330:25:

  330 |           Call MPI_SSEND(buffer(1),buf_size,amr_mpi_real,  &       |                         1 ......   513 |               Call MPI_SSEND (new_loc(1,i),2,MPI_INTEGER,             &       |                              2 Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/INTEGER(4)). amr_migrate_tree_data.F90:338:25:

  338 |           Call MPI_SSEND(newchild(i),1,MPI_LOGICAL,                    &       |                         1 ......   513 |               Call MPI_SSEND (new_loc(1,i),2,MPI_INTEGER,             &       |                              2 Error: Type mismatch between actual argument at (1) and actual argument at (2) (LOGICAL(4)/INTEGER(4)). amr_restrict_ec_genorder.F90:310:37:

-- *Dr. D. P. S. L. Kameswari** *

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