使用CMake编译后，使用mpich2的mpirun时出现问题

Question

我在尝试运行MPI时遇到了麻烦。 我安装了mpich2-1.4.1p1，当我使用mpirun运行mpi程序时，我得到：

[starsky:27711] [[INVALID],INVALID] ORTE_ERROR_LOG: A system-required executable either could not be found or was not executable by this user in file ../../../../../../orte/mca/ess/singleton/ess_singleton_module.c at line 357
[starsky:27711] [[INVALID],INVALID] ORTE_ERROR_LOG: A system-required executable either could not be found or was not executable by this user in file ../../../../../../orte/mca/ess/singleton/ess_singleton_module.c at line 230
[starsky:27711] [[INVALID],INVALID] ORTE_ERROR_LOG: A system-required executable either could not be found or was not executable by this user in file ../../../orte/runtime/orte_init.c at line 132
--------------------------------------------------------------------------
It looks like orte_init failed for some reason; your parallel process is
likely to abort.  There are many reasons that a parallel process can
fail during orte_init; some of which are due to configuration or
environment problems.  This failure appears to be an internal failure;
here's some additional information (which may only be relevant to an
Open MPI developer):

  orte_ess_set_name failed
  --> Returned value A system-required executable either could not be found or was not executable by this user (-127) instead of ORTE_SUCCESS
--------------------------------------------------------------------------
[starsky:27719] [[INVALID],INVALID] ORTE_ERROR_LOG: A system-required executable either could not be found or was not executable by this user in file ../../../../../../orte/mca/ess/singleton/ess_singleton_module.c at line 357
--------------------------------------------------------------------------
It looks like MPI_INIT failed for some reason; your parallel process is
likely to abort.  There are many reasons that a parallel process can
fail during MPI_INIT; some of which are due to configuration or environment
problems.  This failure appears to be an internal failure; here's some
additional information (which may only be relevant to an Open MPI
developer):

  ompi_mpi_init: orte_init failed
  --> Returned "A system-required executable either could not be found or was not executable by this user" (-127) instead of "Success" (0)

以及其他非常相似的错误消息。

这与mpiexec失败的问题非常类似， 因为MPI init中止了 ，因为我似乎同时拥有Open MPI和mpich2。 但是，我正在使用cmake进行编译，当我执行建议的mpicc-vt.mpich2（mpicc-vt因为我使用vampir trace）进行编译，然后mpirun.mpich2运行时，我收到以下错误：

To run 'mpirun.mpich2' please ask your administrator to install the package 'mpich2'

我已经安装了mpich2。 有没有我想安装mpich2的配置？ 当我在配置中查看本手册时，似乎没有一个符合我的需要。

谢谢

Answer 1

很难说出这里发生了什么，因为你的系统上安装了两个MPI库，处于各种完成状态。 我认为此时最好的做法是卸载Open MPI和MPICH，然后转到您正在使用的软件包管理器并重新安装。 这是让一切运转起来的最简单方法。

如果你想要最新的版本（这通常是一件好事），你将不得不直接访问源代码，所以看一下你下载的tarball捆绑的README。 通常，对于这两个包，您都使用安装Unix软件的标准方法。

./configure --prefix=<path for installation>
make
make install

MPICH和Open MPI有很多自定义选项，如果你执行./configure --help并通过自述文件，你可以阅读这些选项，但除非你有一个特殊的系统，否则通常都不需要这些选项。