Building ASCEND

Jpye — Sun, 05 Apr 2026 12:53:17 GMT

Ubuntu 24.04

← Older revision		Revision as of 12:53, 5 April 2026
(One intermediate revision by the same user not shown)
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	===== Ubuntu 24.04 =====		===== Ubuntu 24.04 =====

	As of ~~Jul 2025~~, ASCEND ~~will~~ compile and run with Ubuntu 24.04.		As of Apr 2026, the ASCEND compile and run with Ubuntu 24.04 is as follows:

	If you want to run the (optional) CUnit test suite, first build and install (in <tt>~/.local</tt>; no root required) our ~~patched~~ version of CUnit:		If you want to run the (optional) CUnit test suite, first build and install (in <tt>~/.local</tt>; no root required) our revised version of CUnit (which we're now hosting and releasing via https://github.com/ascend4/cunit).

	<source lang=sh>		<source lang=shellscript>
	sudo apt install build-essential automake autoconf libtool ~~subversion~~		sudo apt install build-essential automake autoconf libtool git
	~~svn co~~ https://~~svn~~.~~code.sf.net~~/p/cunit~~/code/branches/mingw64 cunit~~		git clone https://github.com/ascend4/cunit.git
	cd cunit		cd cunit
	./bootstrap		./bootstrap
	./configure --prefix=$HOME/.local --enable-examples --enable-debug		./configure --prefix=$HOME/.local --enable-examples --enable-debug
	make -j8		make -j7
	make install		make install
	</source>		</source>

	Then, ~~once you~~'~~ve [[SvnInfo\|downloaded~~ the ASCEND ~~source code~~ from Github~~]] to~~ <tt>~/ascend</tt>,		Then, clone the main 'python3' branch of the ASCEND repo from Github into <tt>~/ascend</tt>:

	<source lang=sh>		<source lang=shellscript>
			git clone https://github.com/ascend4/ascend4.git
	sudo apt-get install build-essential gfortran flex bison scons swig doxygen tcl8.6-dev tk8.6-dev tk-table graphviz libgraphviz-dev python3-dev libgtk-3-dev libgtksourceview-3.0-dev python3-gi python3-numpy liblapack-dev libblas-dev libsundials-dev coinor-libipopt-dev libmumps-seq-dev libpcre3-dev python3-packaging python3-matplotlib python3-ipython pkgconf		sudo apt-get install build-essential gfortran flex bison scons swig doxygen tcl8.6-dev tk8.6-dev tk-table graphviz libgraphviz-dev python3-dev libgtk-3-dev libgtksourceview-3.0-dev python3-gi python3-numpy liblapack-dev libblas-dev libsundials-dev coinor-libipopt-dev libmumps-seq-dev libpcre3-dev python3-packaging python3-matplotlib python3-ipython pkgconf
	cd ~/ascend		cd ~/ascend
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	To run the CUnit test suite:		To run the CUnit test suite:

	<source lang=sh>		<source lang=shellscript>
	scons -j7 test MALLOC_DEBUG=1		scons -j7 test MALLOC_DEBUG=1
	./a4 script test/test_expect_mallocdebug		./a4 script test/test_expect_mallocdebug
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	Work in progress...		Work in progress...

	<source lang=sh>		<source lang=shellscript>
	sudo apt install automake autoconf libtool		sudo apt install automake autoconf libtool
	svn co https://svn.code.sf.net/p/cunit/code/branches/mingw64 cunit		svn co https://svn.code.sf.net/p/cunit/code/branches/mingw64 cunit
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	===== Ubuntu 18.04 =====		===== Ubuntu 18.04 =====

	<source lang=sh>		<source lang=shellscript>
	sudo apt-get install subversion gcc g++ gfortran flex bison scons swig doxygen \		sudo apt-get install subversion gcc g++ gfortran flex bison scons swig doxygen \
	tcl8.5 tcl8.5-dev tk8.5 tk8.5-dev tk-table graphviz graphviz-dev \		tcl8.5 tcl8.5-dev tk8.5 tk8.5-dev tk-table graphviz graphviz-dev \
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	As of {{changeset\|3106}}, ASCEND builds with		As of {{changeset\|3106}}, ASCEND builds with

	<source lang=sh>		<source lang=shellscript>
	sudo apt-get install subversion gcc g++ gfortran flex bison scons swig doxygen \		sudo apt-get install subversion gcc g++ gfortran flex bison scons swig doxygen \
	tcl8.5 tcl8.5-dev tk8.5 tk8.5-dev tk-table graphviz graphviz-dev \		tcl8.5 tcl8.5-dev tk8.5 tk8.5-dev tk-table graphviz graphviz-dev \
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	The following packages are needed for setting up Ascend:		The following packages are needed for setting up Ascend:
	<source lang=sh>		<source lang=shellscript>
	sudo apt-get install subversion gcc g++ gfortran flex bison scons swig doxygen \		sudo apt-get install subversion gcc g++ gfortran flex bison scons swig doxygen \
	tcl8.5 tcl8.5-dev tk8.5 tk8.5-dev tk-table graphviz graphviz-dev \		tcl8.5 tcl8.5-dev tk8.5 tk8.5-dev tk-table graphviz graphviz-dev \
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	If you want to use SUNDIALS you have to download version 2.4.0 from the SUNDIALS webpage: http://computation.llnl.gov/casc/sundials/download/download.php		If you want to use SUNDIALS you have to download version 2.4.0 from the SUNDIALS webpage: http://computation.llnl.gov/casc/sundials/download/download.php
	<source lang=sh>		<source lang=shellscript>
	tar xzf sundials-2.4.0.tar.gz		tar xzf sundials-2.4.0.tar.gz
	cd sundials-2.4.0		cd sundials-2.4.0
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	The last command gives the following output:		The last command gives the following output:
	<source lang=sh>		<source lang=shellscript>
	scons: Reading SConscript files ...		scons: Reading SConscript files ...
	{'DISTRIB_CODENAME': 'trusty', 'DISTRIB_RELEASE': '14.04', 'DISTRIB_ID': 'Ubuntu', 'DISTRIB_DESCRIPTION': '"Ubuntu 14.04.4 LTS"'}		{'DISTRIB_CODENAME': 'trusty', 'DISTRIB_RELEASE': '14.04', 'DISTRIB_ID': 'Ubuntu', 'DISTRIB_DESCRIPTION': '"Ubuntu 14.04.4 LTS"'}
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	As mentioned above running scons will create a locally-executable version of ASCEND that can be run from the source tree (pygtk/ascdev or tcltk/generic/interface/ascend4; possibly subject to some environment variable settings).		As mentioned above running scons will create a locally-executable version of ASCEND that can be run from the source tree (pygtk/ascdev or tcltk/generic/interface/ascend4; possibly subject to some environment variable settings).
	<source lang=sh>		<source lang=shellscript>
	scons		scons

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	You have to change the locale setting (e.g. en_US.UTF-8) which uses a point as a decimal separator when running Ascend otherwise you will get an error message which states that your system uses a comma character as a decimal separator. Restart your shell after changing your locale settings.		You have to change the locale setting (e.g. en_US.UTF-8) which uses a point as a decimal separator when running Ascend otherwise you will get an error message which states that your system uses a comma character as a decimal separator. Restart your shell after changing your locale settings.
	<source lang=sh>		<source lang=shellscript>
	sudo update-locale LC_ALL=en_US.UTF-8 LANG=en_US.UTF-8		sudo update-locale LC_ALL=en_US.UTF-8 LANG=en_US.UTF-8
	</source>		</source>
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	Alternatively, you can install ASCEND and run it from a 'proper' location such as ~/bin/ascend or /usr/bin/ascend, etc. To install files for ASCEND, run		Alternatively, you can install ASCEND and run it from a 'proper' location such as ~/bin/ascend or /usr/bin/ascend, etc. To install files for ASCEND, run
	<source lang=sh>		<source lang=shellscript>
	scons install INSTALL_PREFIX=/usr/local		scons install INSTALL_PREFIX=/usr/local
	</source>		</source>

History of ASCEND

Jpye — Wed, 01 Apr 2026 11:33:11 GMT

ASCEND IV, post 2004

← Older revision		Revision as of 11:33, 1 April 2026
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	The active project participants tap several of those mentioned above who continue to have an interest in ASCEND and to participate when requested as resident experts to the code and modeling examples.		The active project participants tap several of those mentioned above who continue to have an interest in ASCEND and to participate when requested as resident experts to the code and modeling examples.

			===ASCEND4, 2026 ===

			Recent work in ASCEND has been focussed on new applications in decarbonised industrial processes, including hydrogen direct reduction ironmaking. [[John Pye]] has been expanding ASCEND with improved support for differential-algebraic equation (DAE) models, expanding the thermodynamics libraries to better handling chemical equilibrium, and many other changes, not least being a massively expanded CUnit test suite with >50% test coverage already achieved. [[Ben Allan]] has been working on adapting ASCEND to run in the browser via WASM.

	[[Category:Documentation]]		[[Category:Documentation]]

ASCEND - Recent changes [en]

Building ASCEND

History of ASCEND