mpich - 由于 MPI init 中止，mpiexec 失败

Question

我正在尝试安装MPICH 2 在运行 Ubuntu 11.04 (Natty Narwhal) 的 64 位机器上。我用过

sudo apt-get install mpich2

首先我很惊讶地发现 mpd 没有安装。在谷歌上查找时，我看到Hydra是新的默认包管理器。所以我尝试运行我的 MPI 代码。我收到以下错误。

> -------------------------------------------------------------------------------------------
> [ip-10-99-75-58:02212] [[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 [ip-10-99-75-58:02212] [[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 [ip-10-99-75-58:02212] [[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
> --------------------------------------------------------------------------
> --------------------------------------------------------------------------
> 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)
> --------------------------------------------------------------------------
> *** The MPI_Init() function was called before MPI_INIT was invoked.
> *** This is disallowed by the MPI standard.
> *** Your MPI job will now abort.
> -------------------------------------------------------------------------------------------

首先，在我看来它是 Open MPI错误。但我安装了 MPICH 2 而不是 Open MPI。

其次，我正在解决如何处理这个问题，因为所有帮助似乎都针对 Open MPI 用户。我错过了什么吗？

Answer 1

我在 Ubuntu 12.04 上也遇到同样的问题。我发现我的问题是因为我的计算机上同时有 open-mpi 和 mpich2 。当我使用 mpicc 编译程序时，它将链接到 open-mpi 而不是 mpich2。要解决此问题，您可以使用“mpicc.mpich2”编译程序，然后使用“mpiexec.mpich2”执行代码。