☰

导出路径时标识符无效

tag-icon • tag-icon command-line bash cuda environment-variables syntax
导出路径时标识符无效

我有两个 Cuda 安装，分别是 11.8 和 12，并且想在它们之间切换，而无需手动编辑 .bashrc 文件并再次获取它。

为此，我想出了在 .bashrc 中放置以下函数

export CUDA_11=/usr/local/cuda-11.8/
export CUDA_12=/usr/local/cuda-12.0/


#Default Cuda12.0 will be loaded, use this to unload 12 and load 11.8

function switchCuda { 
 local pathToUnset=$1"bin/"
 echo $pathToUnset
 local lib64ToUnset=$1"lib64/"
 local pathToSet=$2"bin/"
 local ldPathToSet=$2"lib64/"
 local currentPath=:$PATH:
 unset PATH
 local removedPath=${currentPath/:$pathToUnset:/:}
 removedPath=${removedPath%:}
 removedPath=${removedPath#:}
 PATH=$removedPath
 export $PATH

 currentPath=:$LD_LIBRARY_PATH:
 unset LD_LIBRARY_PATH
 local modifiedLDPath=${currentPath/:$lib64ToUnset:/:}
 modifiedLDPath=${modifiedLDPath%:}
 $modifiedLDPath=${modifiedLDPath#:}

 LD_LIBRARY_PATH=$modifiedLDPath
 export $LD_LIBRARY_PATH
 #echo "I AM DONE UNSETTING THE PATH" 
 if [$2 == "" ]; then
     echo "Simply unsetting cuda path, as provided cuda path is empty. use loadCuda to load the desired path"; return;
fi
    
 export PATH=$PATH:$2
 export PATH=$PATH:$pathToSet
 export LD_LIBRARY_PATH=$ldPathToSet${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
 }

export -f switchCuda

function loadCuda { 
 export PATH=$PATH:$1
 export PATH=$PATH:$1bin
 export LD_LIBRARY_PATH=$1lib64${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
 }

export -f loadCuda

上述函数的预期结果应如下 -

#in a fresh terminal
nvcc --version (should result in 12, as by default cuda 12 is added to path)

switchCuda ${CUDA_12} ${CUDA_11}

nvcc --version (should be 11.8, as cuda 11.8 will now be in path, nobody should be able to find 12)

但是，当我从命令行调用此函数时，出现第一个错误如下 -

bash: export: `/opt/ros/noetic/bin:/home/atharva/ros_catkin_pkg/install_isolated/bin:/opt/intel/oneapi/vtune/2022.2.0/bin64:/opt/intel/oneapi/vpl/2022.1.0/bin:/opt/intel/oneapi/mpi/2021.6.0//libfabric/bin:/opt/intel/oneapi/mpi/2021.6.0//bin:/opt/intel/oneapi/mkl/2022.1.0/bin/intel64:/opt/intel/oneapi/itac/2021.6.0/bin:/opt/intel/oneapi/intelpython/latest/bin:/opt/intel/oneapi/intelpython/latest/condabin:/opt/intel/oneapi/inspector/2022.1.0/bin64:/opt/intel/oneapi/dpcpp-ct/2022.1.0/bin:/opt/intel/oneapi/dev-

utilities/2021.6.0/bin:/opt/intel/oneapi/debugger/2021.6.0/gdb/intel64/bin:/opt/intel/oneapi/compiler/2022.1.0/linux/lib/oclfpga/bin:/opt/intel/oneapi/compiler/2022.1.0/linux/bin/intel64:/opt/intel/oneapi/compiler/2022.1.0/linux/bin:/opt/intel/oneapi/clck/2021.6.0/bin/intel64:/opt/intel/oneapi/advisor/2022.1.0/bin64:/home/atharva/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/bin:

/usr/local/cuda-12.0:/usr/local/cuda-12.0/bin:/home/atharva/TensorRT/TensorRT/bin/:/usr/local/cuda-12.0/:/usr/local/cuda-12.0/bin:/home/atharva/TensorRT/TensorRT/bin/:/usr/local/cuda-12.0/:/usr/local/cuda-12.0/bin:/home/atharva/TensorRT/TensorRT/bin/:/usr/local/cuda-12.0/:/usr/local/cuda-12.0/:/usr/local/cuda-12.0/bin:/home/atharva/TensorRT/TensorRT/bin/:/usr/local/cuda-12.0/:/usr/local/cuda-12.0/bin:/home/atharva/TensorRT/TensorRT/bin/:/usr/local/cuda-12.0/:/usr/local/cuda-12.0/bin:/home/atharva/TensorRT/TensorRT/bin/:/usr/local/cuda-11.8/:/usr/local/cuda-11.8/+bin/:/usr/local/cuda-12.0/:/usr/local/cuda-12.0/bin:/home/atharva/TensorRT/TensorRT/bin/': **not a valid identifier**

上述错误信息的最后一行如下 -

12.0/bin:/home/atharva/TensorRT/TensorRT/bin/': **not a valid identifier**

我认为存在多个问题 -

  1. 字符串替换不正确
  2. 即使删除后，cuda_12 仍然会出现在路径中。
  3. 另外，还有另一个问题，假设我运行 switchCuda {CUDA_12}“”。它应该完全删除 cuda，并且执行类似操作nvcc --version应该会导致command not found。但是，它仍然能够找到 nvcc。为什么会这样？我该如何实现我想要的结果？

短暂性脑缺血发作

相关内容