问题描述
我从openBLAS得到了很多警告
I got tons of warning from openBLAS like
OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.
OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.
这是我的src/Makevars文件的样子
Here is what my src/Makevars file looks like
PKG_CPPFLAGS = $(SHLIB_OPENMP_CXXFLAGS)
PKG_LIBS = $(SHLIB_OPENMP_CXXFLAGS) $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS)
这是我的头文件:
#define ARMA_NO_DEBUG
#ifdef _OPENMP
#include <omp.h>
#endif
//[[Rcpp::depends(RcppArmadillo)]]
#include <RcppArmadillo.h>
//[[Rcpp::depends(RcppProgress)]]
#include <progress.hpp>
#include <Rcpp.h>
#include <R.h>
在我的代码中使用
openMP
openMP is used in my code like this
#pragma omp parallel for num_threads(n_threads) schedule(dynamic) private(W, mu)
for (unsigned int j = 0; j < m; j++)
其中n_threads通过函数参数传递. n_threads = 1时一切都很好，但n_threads = 2时得到了以上警告.可以在此处找到完整的代码，该代码取决于其他文件以及(抱歉，我不能粘贴到这里，因为它有点长).
where n_threads is passed via function argument. Everything is fine when n_threads = 1 but got the above warnings when n_threads = 2.A complete code can be found here, which depends on other files as well (sorry I cannot paste here as it is a bit long).
我尝试将USE_OPENMP=1添加到src/Makevars，但是它不起作用.任何机构都有解决方案吗?谢谢！
I tried adding USE_OPENMP=1 to src/Makevars, but it does not work. Any body has a solution? Thank you!
推荐答案
在CPU模式下运行Torch时，我得到了相同的警告.用OPEN_MP 1重建OpenBLAS为我修复了它.
I got the same warnings while running Torch on CPU mode. Rebuilding OpenBLAS with OPEN_MP 1 fixed it for me.
如果要使用OPEN_MP 1重建OpenBLAS，则:
If you want to rebuild OpenBLAS with OPEN_MP 1, then:
转到克隆OpenBLAS存储库的文件夹(对我来说是/home/brt/code/OpenBLAS)
Go to the folder where you cloned OpenBLAS repository (for me it is /home/brt/code/OpenBLAS)
cd /home/brt/code/OpenBLAS/
make clean
make USE_OPENMP=1
sudo make install
如果您还没有这样做，
sudo vi /etc/ld.so.conf.d/openblas.conf
添加以下行:/opt/OpenBLAS/lib
add the line: /opt/OpenBLAS/lib
保存并关闭
sudo ldconfig
这应该以OPEN_MP为1重建OpenBLAS
This should rebuild OpenBLAS with OPEN_MP as 1
这篇关于如何使openBLAS与openMP一起使用?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！