macos - openmpi 忽略错误 : mca interface is not recognized

Question

今天早上我升级了我的 gfortran(从 4.7 到 6.1.0)和 OpenMPI(从 1.10 到 2.0.1)编译器。我写了这个简单的程序:

program main                                                                                             
    use mpi_f08                                                                                          
    implicit none                                                                                        
    integer :: ierror                                                                                    

    call mpi_init(ierror)                                                                                
    call mpi_finalize(ierror)                                                                            
end program main   

当我直接编译时(没有 mpirun，只是 ./a.out )，我收到以下消息(它们并不是真正的错误，因为程序按预期运行):

[username:79762] mca_base_component_repository_open: unable to open mca_grpcomm_bad: dlopen(/usr/local/lib/openmpi/mca_grpcomm_bad.so, 9): Symbol not found: _orte_grpcomm_base_modex
  Referenced from: /usr/local/lib/openmpi/mca_grpcomm_bad.so
  Expected in: flat namespace
 in /usr/local/lib/openmpi/mca_grpcomm_bad.so (ignored)
[username:79761] mca_base_component_repository_open: unable to open mca_grpcomm_bad: dlopen(/usr/local/lib/openmpi/mca_grpcomm_bad.so, 9): Symbol not found: _orte_grpcomm_base_modex
  Referenced from: /usr/local/lib/openmpi/mca_grpcomm_bad.so
  Expected in: flat namespace
 in /usr/local/lib/openmpi/mca_grpcomm_bad.so (ignored)
[username:79761] mca_base_component_repository_open: unable to open mca_pml_bfo: dlopen(/usr/local/lib/openmpi/mca_pml_bfo.so, 9): Symbol not found: _ompi_free_list_item_t_class
  Referenced from: /usr/local/lib/openmpi/mca_pml_bfo.so
  Expected in: flat namespace
 in /usr/local/lib/openmpi/mca_pml_bfo.so (ignored)
[username:79761] mca_base_component_repository_open: coll "/usr/local/lib/openmpi/mca_coll_hierarch" uses an MCA interface that is not recognized (component MCA v2.0.0 != supported MCA v2.1.0) -- ignored
[username:79761] mca_base_component_repository_open: unable to open mca_coll_ml: dlopen(/usr/local/lib/openmpi/mca_coll_ml.so, 9): Symbol not found: _mca_bcol_base_components_in_use
  Referenced from: /usr/local/lib/openmpi/mca_coll_ml.so
  Expected in: flat namespace
 in /usr/local/lib/openmpi/mca_coll_ml.so (ignored)

我记得当我用 openmpi 编译我的代码并用 mpich 或 intel 的 mpirun 版本运行它时收到了类似的警告。现在显然不是这种情况，但我想我会提到它。

知道是什么导致了这些警告吗？

编辑:

为了确保我的运行时 OpenMPI 库确实是 2.0.1，我在上面显示的代码中添加了这行代码:

print'(3(A,I1))', "OpenMPI version = ", OMPI_MAJOR_VERSION, ".", OMPI_MINOR_VERSION, ".",& 
  8                       OMPI_RELEASE_VERSION

它给出了以下输出:

OpenMPI version = 2.0.1

按照 VladimirF 的建议，我运行了 mpirun -v输出以下内容:

 [username:02210] mca_base_component_repository_open: unable to open mca_grpcomm_bad: dlopen(/usr/local/lib/openmpi/mca_grpcomm_bad.so, 9): Symbol not found: _orte_grpcomm_base_modex
  Referenced from: /usr/local/lib/openmpi/mca_grpcomm_bad.so
  Expected in: flat namespace
 in /usr/local/lib/openmpi/mca_grpcomm_bad.so (ignored)
--------------------------------------------------------------------------
No executable was specified on the mpirun command line.

Aborting.

另外，mpirun --version返回:mpirun (Open MPI) 2.0.1

Answer 1

感谢 Gilles Gouaillardet 在 OpenMPI 论坛上的帮助，我已经解决了这个问题。

问题:

我安装了较新的 2.0.1 版本而没有卸载 1.10。由于我将它安装在同一位置，因此某些 mca 文件被覆盖，而其他 mca 文件已在较新版本中被删除或重命名，因此仍存在于目录中。最后，这些模块文件没有被2.0.1版本识别，导致出现上述警告。

解决方案:

删除所有插件文件:rm -rf /usr/local/lib/openmpi

重新安装 Openmpi:make install