<div dir="ltr"><div>Hi, </div>I'm trying to use nek5000 with MPI on a Mac.  OS is Yosemite.<div><br>Fortran compiler = gfortran:</div><div><br>nikolai:eddy wenhaowu$ gfortran --version<br>GNU Fortran (GCC) 5.1.0<br>Copyright (C) 2014 Free Software Foundation, Inc.<br><br></div><div>C compiler = mpicc from mpich:<br><br></div><div>nikolai:eddy wenhaowu$ mpicc --version<br>Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)<br>Target: x86_64-apple-darwin14.3.0<br>Thread model: posix<br><br><br>And I followed the instruction 'QuickStart':</div><div><br>Here is the beginning of my 'makenek':<br>-----------------------------------------------------------------<br>#!/bin/bash                                                                    <br><br># Nek5000 build config file                                                    <br><br># (c) 2008,2009,2010 UCHICAGO ARGONNE, LLC                                      <br><br><br># source path                                                                  <br><br>SOURCE_ROOT="/Users/wenhaowu/Documents/testcases/nek5/trunk/nek"<br><br><br># Fortran compiler                                                              <br><br>F77="gfortran"<br><br><br># C compiler                                                                    <br><br>CC="mpicc"<br><br><br># pre-processor symbol list                                                    <br><br># (set PPLIST=? to get a list of available symbols)                            <br><br>#PPLIST="?"                                                                    <br><br><br># plug-in list                                                                  <br><br>PLUGIN_LIST=""<br><br><br><br># OPTIONAL SETTINGS                                                            <br><br># -----------------                                                            <br><br><br># enable MPI (default true)                                                    <br><br>#IFMPI="false"<br><br>...<br>-----------------------------------------------------------------<br><br>Here is my command:<br>./makenek eddy_uv<br><br>Here is an example what goes wrong:<br><div>-------------------------------------------------------------------------<br>mpicc -c  -O2 -DPTRSIZE8 -DMPI -DLONGINT8 -DUNDERSCORE -DGLOBAL_LONG_LONG  -DPRE<br><br>FIX=jl_ /Users/wenhaowu/Documents/testcases/nek5/trunk/nek/nek_comm.c -o obj/nek<br><br>_comm.o<br><br>In file included from /Users/wenhaowu/Documents/testcases/nek5/trunk/nek/nek_com<br><br>m.c:17:<br><br>/opt/local/include/mpich-mp/mpi.h:116:56: error: expected identifier<br><br>static const MPI_Datatype mpich_mpi_char               MPICH_ATTR_TYPE_TAG(char)<br><br>               = MPI_CHAR;<br><br>                                                       ^<br><br>/opt/local/include/mpich-mp/mpi.h:24:106: note: expanded from macro 'MPICH_ATTR_TYPE_TAG'<br><br>#    define MPICH_ATTR_TYPE_TAG(type)                               __attribute__((type_tag_for_datatype(MPI,type)))<br><br>                                                                                                         ^<br><br><command line>:2:13: note: expanded from here<br><br>#define MPI 1<br>-------------------------------------------------------------------------</div><div><br><div>The problem is nek5000 has #defined MPI to be 1, but the mpich header file<br>'mpi.h' uses the symbol 'MPI' (for a completely different reason).<br><br></div><div>How do other people use nek5000 with mpi on a Mac?<br><br>Thanks.<br><br>Sincerely,<br><br>Wenhao Wu<br></div></div></div></div>