I am making use of a partial pivoting function by the name of
gesv. To get the libraries to make this happen in C++ I used a one line command from Installing BLAS and LAPACK packages.
sudo apt-get install libblas-dev liblapack-dev
Then I was able to link the libraries by adding the following to the compile instructions
g++ main.cpp -llapack -lblas
I got tremendous speed up on my laptop (Linux 2020), but when I started running on a cluster the method is extremely slow when running the same (large) case. I don’t think both of the libraries are installed on the cluster. The code runs, so it seems like whichever one provides the speed increase is not on the cluster I am using.
Is it possible to build and then link the
blas libraries by “hand” rather than doing the
Thank you for your time.