Question

我正在尝试在Ubuntu 18.04实例上安装mpi4py。我已经安装了python3.6.5。

首先，我尝试sudo apt-get build-dep python-mpi4py并得到：

正在阅读软件包列表...完成E：您必须在其中放入一些“源” URI 您的sources.list

然后，我尝试使用pip install mpi4py进行简单安装。我收到一条很长的错误消息，并且在下面包括一些最重要的部分：

checking for library 'lmpe' ...
  /home/ubuntu/anaconda3/envs/tensorflow_p36/bin/mpicc -pthread -B /home/ubuntu/anaconda3/envs/tensorflow_p36/compiler_compat -Wl,--sysroot=/ -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -c _configtest.c -o _configtest.o
  --------------------------------------------------------------------------
  The Open MPI wrapper compiler was unable to find the specified compiler
  x86_64-conda_cos6-linux-gnu-cc in your PATH.

  Note that this compiler was either specified at configure time or in
  one of several possible environment variables.
  --------------------------------------------------------------------------
  failure.

大多数库都会发生此故障。我只包括其中之一，而且

  warning: build_clib: command '/home/ubuntu/anaconda3/envs/tensorflow_p36/bin/mpicc' failed with exit status 1

  warning: build_clib: building optional library "vt-mpi" failed


  checking for library 'vt-hyb' ...
  /home/ubuntu/anaconda3/envs/tensorflow_p36/bin/mpicc -pthread -B /home/ubuntu/anaconda3/envs/tensorflow_p36/compiler_compat -Wl,--sysroot=/ -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -c _configtest.c -o _configtest.o
  --------------------------------------------------------------------------
  The Open MPI wrapper compiler was unable to find the specified compiler
  x86_64-conda_cos6-linux-gnu-cc in your PATH.

  Note that this compiler was either specified at configure time or in
  one of several possible environment variables.

运行which mpcc给出：

(tensorflow_p36) ubuntu@ip-172-31-35-200:~$ which mpicc
/home/ubuntu/anaconda3/envs/tensorflow_p36/bin/mpicc

如何将指定的编译器x86_64-conda_cos6-linux-gnu-cc添加到PATH中，以解决此错误？

Answer 1

只需运行：

conda install -c anaconda mpi4py，如图here所示。

还有Lidandro Dalcin的helpful comment：

我想您缺少mpich-mpicc软件包，这是一个依赖于正确编译器的metapackage。你为什么要安装 mpi4py与点子？也许您只需要conda安装mpi4py （可在conda-forge频道中找到）？

在Ubuntu实例上安装mpi4py时出错

1 个答案: