scnc
/
quantum-espresso
mirror of https://gitlab.com/QEF/q-e.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Added warning about running tests and examples on too meny processors 

git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@9218 c92efa57-630b-4861-b058-cf58834340f0
This commit is contained in:
giannozz 2012-07-24 18:59:07 +00:00
parent f3aed1e2eb
commit 7edf7c75e1
2 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Doc/user_guide.tex
View File

@ -782,6 +782,10 @@ system installed on that machine. Ask your system administrator for
instructions. For execution using OpenMP on N threads,
you should set PARA\_PREFIX to \texttt{"env OMP\_NUM\_THREADS=N ... "}.
Notice that most tests and examples are devised to be run serially
or on a small number of processors; do not use tests and examples
to benchmark parallelism, do not try to run on too many processors.
To run an example, go to the corresponding directory (e.g.
\texttt{PW/examples/example01}) and execute:
\begin{verbatim}

5
environment_variables
View File

@ -47,8 +47,11 @@ fi
# ^^^ PARA_PREFIX ^^^^^^^^ PARA_POSTFIX
#
# To run on a single processor, you can usually leave them empty.
# BEWARE: most tests and examples are devised to be run serially or on
# a small number of processors; do not use tests and examples to benchmark
# parallelism, do not run on too many processors
#PARA_PREFIX="mpirun -np 2"
PARA_PREFIX="mpirun -np 2"
PARA_PREFIX=" "
PARA_POSTFIX=" "