我通过CRAN在我的 Mac 上安装了 R 。我还通过homebrew安装了 openblas 。我可以在 BLAS 实现之间切换，如下所示：
参考 blas（我认为是 netlib）：
ln -sf /Library/Frameworks/R.framework/Resources/lib/libRblas.0.dylib /Library/Frameworks/R.framework/Resources/lib/libRblas.dylib
vecLib（Apple 的 BLAS）：
ln -sf /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/Versions/Current/libBLAS.dylib /Library/Frameworks/R.framework/Resources/lib/libRblas.dylib
openblas（通过自制软件提供）：
brew link openblas --force
ln -sf /usr/local/lib/libopenblas.dylib /Library/Frameworks/R.framework/Resources/lib/libRblas.dylib
在 3 个选项中，openblas 似乎是最快的选项（尽管 vecLib 紧随其后）。
但是，我想尝试更多的力量：
我从 NVIDIA 安装了 CUDA 6.5。这会将一堆文件下载到/Developer/NVIDIA/并将其中一些链接到/usr/local/cuda. 我将我的 cuda 环境变量设置为~/.profile：
export PATH="/usr/local/cuda/bin:$PATH"
export LD_LIBRARY_PATH="/usr/local/cuda/lib:$LD_LIBRARY_PATH"
export CUDA_ROOT="/usr/local/cuda/bin"
export CUDA_HOME="/usr/local/cuda"
export NVBLAS_CONFIG_FILE="/Users/me/nvblas.conf"
然后，我使用以下条目制作了一个“/Users/me/nvblas.conf”：
NVBLAS_CPU_BLAS_LIB /usr/local/lib/libopenblas.dylib
NVBLAS_GPU_LIST ALL0
NVBLAS_TILE_DIM 2048
NVBLAS_AUTOPIN_MEM_ENABLED
理论上，这应该指向nvblas.dylib不libopenblas.dylib包含在 BLAS 中的函数nvblas.dylib。
到目前为止，一切都很好。下一步是将 R 链接到nvblas.dylib：
ln -sf /usr/local/cuda/lib/libnvblas.dylib /Library/Frameworks/R.framework/Resources/lib/libRblas.dylib
但是，当我启动 R 时，似乎libRlapack.dylib找不到它正在寻找的所有 BLAS 函数：
me:~ me$ R
[NVBLAS] Using devices :0
[NVBLAS] Config parsed
R version 3.1.2 (2014-10-31) -- "Pumpkin Helmet"
Copyright (C) 2014 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin13.4.0 (64-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.
Natural language support but running in an English locale
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'citation()' on how to cite R or R packages in publications.
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'help.start()' for an HTML browser interface to help.
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Error in dyn.load(file, DLLpath = DLLpath, ...) :
unable to load shared object '/Library/Frameworks/R.framework/Versions/3.1/Resources/library/stats/libs/stats.so':
dlopen(/Library/Frameworks/R.framework/Versions/3.1/Resources/library/stats/libs/stats.so, 6): Symbol not found: _dasum_
Referenced from: /Library/Frameworks/R.framework/Versions/3.1/Resources/lib/libRlapack.dylib
Expected in: /Library/Frameworks/R.framework/Versions/3.1/Resources/lib/libRblas.dylib
in /Library/Frameworks/R.framework/Versions/3.1/Resources/lib/libRlapack.dylib
During startup - Warning message:
package ‘stats’ in options("defaultPackages") was not found
openblas 本身可以正常工作，并提供 R 正在寻找的所有功能，所以我认为错误是libnvblas.dylib没有正确回退到libopenblas.dylib.
无论我指向什么 CPU BLAS libnvblas.dylib（netlib、vecLib、openblas），都会发生这种情况。谁能帮我解决这个错误？我还需要在我的路径或链接中添加什么才能libnvblas.dylib在 Mac 上正确使用 R 吗？
相关的错误可能是：
Symbol not found: _dasum_
Referenced from: /Library/Frameworks/R.framework/Versions/3.1/Resources/lib/libRlapack.dylib
Expected in: /Library/Frameworks/R.framework/Versions/3.1/Resources/lib/libRblas.dylib
在我看来，nvblas 没有转发_dasum_到 openblas。
/编辑：
otool -L /Library/Frameworks/R.framework/Resources/lib/libRblas.dylib
产量：
/Library/Frameworks/R.framework/Resources/lib/libRblas.dylib:
@rpath/libnvblas.6.5.dylib (compatibility version 0.0.0, current version 6.5.14)
@rpath/libcublas.6.5.dylib (compatibility version 0.0.0, current version 6.5.14)
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 635.21.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 52.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 159.1.0)