如何在ubuntu20上以后端为后台在termux上运行keras

Question

我尝试在Pydroid 3 (Android)上安装theano和keras，这是我成功的，但是在运行keras时，theano不是keras的后端，所以我在termux上安装了ubuntu 20，并使用以下命令安装了keras和theano：

apt install python3-keras --no-install-recommends && apt install python3-theano --no-install-recommends

它已经成功安装，当我想要后端的东西作为theano时，我搜索~/.keras/keras.json，但是它不在那里，所以我想检查它，所以我运行它，给了我以下错误：

root@localhost~# python3 testkeras.py
[localhost:21091] opal_ifinit: ioctl(SIOCGIFHWADDR) failed with errno=13
[localhost:21092] opal_ifinit: ioctl(SIOCGIFHWADDR) failed with errno=13
[localhost:21092] pmix_ifinit: ioctl(SIOCGIFHWADDR) failed with errno=13
[localhost:21092] oob_tcp: problems getting address for index 88256 (kernel index -1)
--------------------------------------------------------------------------     No network interfaces were found for out-of-band communications. We require
at least one available network for out-of-band messaging.
--------------------------------------------------------------------------
[localhost:21091] [[INVALID],INVALID] ORTE_ERROR_LOG: Unable to start a daemon on the local node in file ess_singleton_module.c at line 716
[localhost:21091] [[INVALID],INVALID] ORTE_ERROR_LOG: Unable to start a daemon on the local node in file ess_singleton_module.c at line 172                   --------------------------------------------------------------------------     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_init failed
  --> Returned value Unable to start a daemon on the local node (-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: ompi_rte_init failed
  --> Returned "Unable to start a daemon on the local node" (-127) instead of "Success" (0)
--------------------------------------------------------------------------
*** An error occurred in MPI_Init_thread
*** on a NULL communicator
*** MPI_ERRORS_ARE_FATAL (processes in this communicator will now abort,
***    and potentially your MPI job)
[localhost:21091] Local abort before MPI_INIT completed completed successfully, but am not able to aggregate error messages, and not able to guarantee that all other processes were killed!

( 1.)我想知道问题出在哪里。

( 2.)欢迎提出建议。

我运行的代码，如果你们中有人想知道

import numpy as np

from keras.models import Sequential
from keras.layers import Dense, Dropout

--这是我安装的模块:

Package             Version
------------------- -------
decorator           4.4.2                                                      h5py                2.10.0
Keras               2.2.4
Keras-Applications  1.0.6
Keras-Preprocessing 1.0.5
mpi4py              3.0.3
numpy               1.17.4
pip                 20.0.2                                                     PyYAML              5.3.1                                                      scipy               1.3.3
setuptools          45.2.0
six                 1.14.0
Theano              1.0.4
wheel               0.34.2

和我是这个机器学习领域的新成员

有关系统的其他一些信息

            .-/+oossssoo+/-.
        `:+ssssssssssssssssss+:`
      -+ssssssssssssssssssyyssss+-
    .ossssssssssssssssssdMMMNysssso.
   /ssssssssssshdmmNNmmyNMMMMhssssss/      root@localhost
  +ssssssssshmydMMMMMMMNddddyssssssss+     --------------
 /sssssssshNMMMyhhyyyyhmNMMMNhssssssss/    OS: Ubuntu 20.04 LTS focal aarch64
.ssssssssdMMMNhsssssssssshNMMMdssssssss.   Kernel: 4.4.147+
+sssshhhyNMMNyssssssssssssyNMMMysssssss+   Uptime: 18805 days, 10 hours, 9 min
ossyNMMMNyMMhsssssssssssssshmmmhssssssso   Packages: 202 (dpkg)
ossyNMMMNyMMhsssssssssssssshmmmhssssssso   Shell: bash 5.0.16
+sssshhhyNMMNyssssssssssssyNMMMysssssss+   Terminal: proot
.ssssssssdMMMNhsssssssssshNMMMdssssssss.   CPU: Unisoc SC9863a (8) @ 1.200GHz
 /sssssssshNMMMyhhyyyyhdNMMMNhssssssss/    Memory: 957MiB / 1819MiB
  +sssssssssdmydMMMMMMMMddddyssssssss+
   /ssssssssssshdmNNNNmyNMMMMhssssss/
    .ossssssssssssssssssdMMMNysssso.
      -+sssssssssssssssssyyyssss+-
        `:+ssssssssssssssssss+:`
            .-/+oossssoo+/-.

Answer 1

谢谢史努比医生我终于让它正常工作了。但是，我不得不删除os，并在不需要任何情况下重新安装它，方法是使用were apt install proot-distro命令，但我认为真正的问题是命令apt install python3-keras --no-install-recommends，正如您所说的，存在一些不满意的依赖关系或平台不一致。

好了，最后要做的步骤是让它正常工作，

1.在termux apt install proot-distro && proot-distro install ubuntu-18.04 && apt install python3-keras中输入以下命令

2.，然后使用最喜欢的文本编辑器编辑我使用的vim文件--在本例中是vim .keras/keras.json --该文件将类似于以下内容：

{
    "floatx": "float32",
    "epsilon": 1e-07,
    "backend": "tensorflow",
    "image_data_format": "channels_last"
}

并将后端的值更改为theano，在我的例子中，我是ad theano ，文件应该如下所示：

{
    "floatx": "float32",
    "epsilon": 1e-07,
    "backend": "theano",
    "image_data_format": "channels_last"
}

然后通过进入python交互模式来保存file.And测试，并输入import keras，输出应该是Using Theano as Backend ，我认为这应该可以帮助其他人.