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documentation: updated README

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Mark Olesen
2008-06-05 15:17:24 +02:00
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148
README
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@ -23,20 +23,19 @@
7. Documentation
8. Help
9. Reporting Bugs
A. Network settings
B. Running OpenFOAM in 32-bit mode
A. Running OpenFOAM in 32-bit mode
2. System requirements
~~~~~~~~~~~~~~~~~~~~~~
OpenFOAM generally requires that the host machine operates a basic level
of networking. To check your system setup, execute the foamSystemCheck
OpenFOAM is developed and tested on Linux, but should work with other
Unix style system. To check your system setup, execute the foamSystemCheck
script in the bin directory of the OpenFOAM installation. If no problems
are reported, proceed to "3. Installation"; otherwise see the
appendix "A. Network settings" and/or contact your system administrator.
are reported, proceed to "3. Installation"; otherwise contact your
system administrator.
If the user wishes to run OpenFOAM in 32/64-bit mode they should consult
the appendix "B. Running OpenFOAM in 32-bit mode".
the appendix "A. Running OpenFOAM in 32-bit mode".
3. Installation
@ -48,14 +47,16 @@
The environment variable settings are contained in files in an etc/
directory in the OpenFOAM release. e.g. in
$HOME/OpenFOAM/OpenFOAM-dev/etc/
$HOME/OpenFOAM/OpenFOAM-<VERSION>/etc/
where <VERSION> corresponds to the version 1.4, 1.5, ...
a)
EITHER, if running bash or ksh (if in doubt type 'echo $SHELL'),
source the etc/bashrc file by adding the following line to the end
of your $HOME/.bashrc file:
. $HOME/OpenFOAM/OpenFOAM-dev/etc/bashrc
. $HOME/OpenFOAM/OpenFOAM-<VERSION>/etc/bashrc
Then update the environment variables by sourcing the $HOME/.bashrc file
by typing in the terminal:
@ -66,7 +67,7 @@
OR, if running tcsh or csh, source the etc/cshrc file by adding the
following line to the end of your $HOME/.cshrc file:
source $HOME/OpenFOAM/OpenFOAM-dev/etc/cshrc
source $HOME/OpenFOAM/OpenFOAM-<VERSION>/etc/cshrc
Then update the environment variables by sourcing the $HOME/.cshrc file
by typing in the terminal:
@ -85,39 +86,42 @@
the appropriate resource file. Here is a bash/ksh/sh example:
export FOAM_INST_DIR=/data/app/OpenFOAM
foamDotFile=$FOAM_INST_DIR/OpenFOAM-dev/etc/bashrc
foamDotFile=$FOAM_INST_DIR/OpenFOAM-<VERSION>/etc/bashrc
[ -f $foamDotFile ] && . $foamDotFile
and a csh example:
setenv FOAM_INST_DIR /data/app/OpenFOAM
foamDotFile=$FOAM_INST_DIR/OpenFOAM-dev/etc/bashrc
foamDotFile=$FOAM_INST_DIR/OpenFOAM-<VERSION>/etc/bashrc
if ( -f $foamDotFile ) source $foamDotFile
The value set in '$FOAM_INST_DIR' will be used to locate the rest
of the OpenFOAM installation.
The value set in '$FOAM_INST_DIR' will be used to locate the remaining
parts of the OpenFOAM installation.
4. Building from Sources (Optional)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If you cannot find an appropriate binary pack for your platform you can
If you cannot find an appropriate binary pack for your platform, you can
build the complete OpenFOAM from the source-pack. First you will need to
compile or obtain a recent version of gcc (we recommend gcc-4.1.?) for
your platform which may be obtained from http://gcc.gnu.org/. Install the
compiler in $WM_PROJECT_INST_DIR/$WM_ARCH/gcc-4.1.? and change the gcc
version number in $WM_PROJECT_DIR/.bashrc and $WM_PROJECT_DIR/.cshrc as
appropriate and update the environment variables as in section 3.
compile or obtain a recent version of gcc (we recomend gcc-4.2.?) for
your platform, which may be obtained from http://gcc.gnu.org/.
Install the compiler in
$WM_PROJECT_INST_DIR/ThirdParty/gcc-<GCC_VERSION>/platforms/$WM_ARCH$WM_COMPILER_ARCH/
and change the gcc version number in $WM_PROJECT_DIR/etc/settings.sh and
$WM_PROJECT_DIR/etc/settings.csh appropriately and finally update the
environment variables as in section 3.
Now go to the top-level source directory $WM_PROJECT_DIR and type
./Allwmake, which is the name of the top-level build script for building
the whole of OpenFOAM. In principle this will build everything but
the whole of OpenFOAM. In principle this will build everything, but
sometimes problems occur with the build order and it is necessary to
update the environment variables and re-execute Allwmake. If you
experience difficulties with building the source-pack or your platform is
not currently supported please contact enquiries@OpenCFD.co.uk to
negotiate a support contract and we will do the port and maintiain it in
not currently supported please contact <enquiries@OpenCFD.co.uk> to
negotiate a support contract and we will do the port and maintain it in
future releases.
@ -132,21 +136,22 @@
6. Getting Started
~~~~~~~~~~~~~~~~~~
Create a project directory within the $HOME/OpenFOAM directory named
<userName>-dev (e.g. 'chris-dev' for user chris) and create a
directory named 'run' within it, e.g. by typing:
mkdir -p $HOME/OpenFOAM/${LOGNAME}-dev/run
Create a project directory within the $HOME/OpenFOAM directory named
<USER>-<VERSION> (e.g. 'chris-1.5' for user chris and OpenFOAM version 1.5)
and create a directory named 'run' within it, e.g. by typing:
mkdir -p $HOME/OpenFOAM/${USER}-${WM_PROJECT_VERSION}/run
Copy the 'tutorial' examples directory in the OpenFOAM distribution to the
'run' directory. If OpenFOAM environment variables are set correctly,
then the following command will be correct:
cp -r $WM_PROJECT_DIR/tutorials $HOME/OpenFOAM/${LOGNAME}-dev/run
cp -r $WM_PROJECT_DIR/tutorials $HOME/OpenFOAM/${USER}-${WM_PROJECT_VERSION}/run
Run the first example case of incompressible laminar flow in a cavity:
cd $HOME/OpenFOAM/${LOGNAME}-dev/run/tutorials/icoFoam/cavity
cd $HOME/OpenFOAM/${USER}-${WM_PROJECT_VERSION}/run/tutorials/icoFoam/cavity
blockMesh
icoFoam
@ -167,87 +172,7 @@
http://www.OpenFOAM.org/bugs.html
A. Network settings
~~~~~~~~~~~~~~~~~~~
OpenFOAM requires a basic level of networking to be set up. Firstly, the
host name must be set - to test, type 'uname -a'. The running shell must
be tcsh, csh, bash or ksh - to test type 'echo $SHELL'
The user must be able to 'ping' the host machine itself (<host>) - to
test, type 'ping -c 1 <host>'
If the ping fails then it is possible that that the entry for the host
machine is missing, incorrect or duplicated in the /etc/hosts file. The
user can check this by typing 'grep <host> /etc/hosts' which should return
a single line, typically of the form:
<IPaddress> <host>.<domain> <host>
The <IPaddress> must correspond to that in the networking settings of the
machine which can also be checked by typing on Linux '/sbin/ifconfig'
which should produce lines of output that include something similar to the
following:
eth0 Link encap:Ethernet HWaddr ...
inet addr:<IPaddress> ...
If the user is connected to a network that uses dynamic IP addresses, they
must be particularly careful to ensure that an entry for their hostname/IP
exists in the /etc/hosts file. If the server frequently reallocates IP
addresses across the network, it is advisable that the /etc/hosts file is
updated automatically when any changes occur.
The user should also be able to contact any other machine that it needs
to, either a remote licence host or other machines that are being used
within some parallel computation. Essentially the user needs to be able to
ping these machines as described in preceeding sections.
The machine must have one of (or both) remote (rsh) and secure shell (ssh)
running on his/her account. To check whether rsh is running correctly, the
user should type 'rsh <host> ls'. Alternatively the user can check if ssh
is running correctly by typing 'ssh <host> ls'. In either case, the output
to the command should produce a file/directory listing for the current
directory and no other text. If neither command works, we recommend the
user set up rsh for their use as follows:
Check the rsh executable actually exists, e.g. the path to the executable
should be returned when typing 'which rsh'. Check with the system
administrator that rsh is enabled on the user's account; if not, request
that it is enabled. Create a '.rhosts' file in the $HOME directory
containing entries to access any machines they need to access, i.e. their
own machine and, if different, the licence host machine. The entries are
of the form: '<host> <user>'.
Remote shell accesses the .bashrc (or .cshrc) file and will not run
correctly if there is a problem with this file. In particular the user
should be careful with the following:
The ~/.cshrc (or ~/.bashrc) file should not contain errors that prevent it
from executing fully at startup; all error messages during execution of
the ~/.bashrc (or ~/.cshrc) file should be investigated and acted upon to
eliminate them. echo (print to screen) statements within ~/.bashrc (or
~/.cshrc) must not be executed during the running of rsh. This does not
mean that echo statements are forbidden from the ~/.cshrc (or ~/.bashrc)
file, but they must be enclosed in a control structure, e.g. an if
statement, that ensures they are not executed when rsh is executed.
For ~.bashrc:
if [ "$PS1" ]; then
echo "..."
fi
# or, alternatively
if /usr/bin/tty -s 2>/dev/null; then
echo "..."
fi
and, for ~.cshrc:
if ($?prompt) then ; echo "..." ; endif
B. Running OpenFOAM in 32-bit mode on 64-bit machines
A. Running OpenFOAM in 32-bit mode on 64-bit machines
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Those users with an installation of Linux on a 64-bit machine may install
either or both of the 32-bit version of OpenFOAM (linux) or the 64-bit
@ -256,3 +181,4 @@ B. Running OpenFOAM in 32-bit mode on 64-bit machines
variable $WM_32 (to anything, e.g. "on") before sourcing the etc/bashrc
(or etc/cshrc) file. Unsetting $WM_32 and sourcing the bashrc file will
set up the user to run in 64-bit mode.