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Additional info on AMD libraries

This commit is contained in:
Paolo Giannozzi 2020-02-21 15:27:02 +00:00
parent d28b9cf06a
commit 620ea1aa3a
1 changed files with 8 additions and 2 deletions
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Doc/user_guide.tex
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@ -1130,8 +1130,14 @@ is that I also saw some strange numbers when using libflame/aocl 2.1.
export MKL_DEBUG_CPU_TYPE=5
\end{verbatim}
which gives an additional 10-20\% speedup with MKL 2020,
while for earlier versions the speedup is greater than 200\%.''
(Info by Tobias Kl\"offel, Feb. 2020)
while for earlier versions the speedup is greater than 200\%.
[...] Another note, there seem to be problems using FFTW interface
of MKL with AMD cpus. To get around this problem, one has to
additionally set
\begin{verbatim}
export MKL_CBWR=AUTO
\end{verbatim}
`` (Info by Tobias Kl\"offel, Feb. 2020)
\subsubsection{Linux PC clusters with MPI}
\label{SubSec:LinuxPCMPI}