Libroadrunner. libRoadRunner is a C/C++ software library that supports simulation of SBML based models.. It uses LLVM to generate extremely high-performance code and is the fastest SBML-based simulator currently available. Its main purpose is for use as a reusable library that can be hosted by other applications, particularly on large compute clusters for doing parameter optimization where performance is critical. It also has a set of Python bindings that allow it to be easily used from Python as well as a set of bindings for Julia.

libroadrunner is often paired with Tellurium, which adds additional functionality such as Antimony scripting.

Capabilities 

 Time-course simulation using the CVODE, RK45, and Euler solvers of ordinary differential equations, which can report on the system's variable concentrations and reaction rates over time.

 Steady-state calculations using non-linear solvers such as kinsolve and NLEQ2

 Stochastic simulation using the standard Gillespie algorithm.

 Supports both steady-state and time-dependent Metabolic control analysis, including calculating the elasticities towards the variable metabolites by algebraic or numerical differentiation of the rate equations, as well as the flux and concentration control coefficients by means of matrix inversion and perturbation methods. 

 libroadrunner will also compute the structural matrices (e.g. K- and L-matrices) of a stoichiometric model.

 The stability of a system can be investigated by way of the system eigenvalues. 

 Data and results can be plotted via matplotlib, or saved in text files.

 libroadrunner supports the import and export of standard SBML.

Applications 

libroadrunner has been widely used in the systems biology community for doing research in systems biology modeling, as well as being a host for other simulation platforms.

Software applications that use libroadrunner 

 CompuCell3D
 CRNT4SBML
 DIVIPAC
 massPy
 pyBioNetFit
 PhysiCell
 pyViPR
 runBiosimulations
 SBMLSim
 Tellurium (simulation tool)
 Tissue Forge (multi-cellular simulator)
 TOPAS-Tissue

Research applications 

libroadrunner has been used in a large variety of research projects. The following lists a small number of those studies:

 Tickman et al, describe developing multi-layer CRIPRa/i circuits for genetic programs using Tellurium/libroadrunner as the computational application.

 Salazar-Cavazos et al used pyBioNetFit/libroadrunner to investigate Multisite EGFR phosphorylation.

 Douilhet et al. used Tellurium/libroadrunner to investigate the use of genetic algorithms with rank selection optimization.

 Schmiester et al. used pyBioNetFit/libroadrunner to investigate gradient-based parameter estimation using qualitative data. 

 Yang et al used CompuCell3D/libroadrunner to model transcript factor cooperation in mouse liver.

Notability 

 libroadrunner was the first SBML simulation to use just-in-time compilation using LLVM.
 It is the only SBML simulator that exploits AUTO2000 for bifurcation analysis.

A number of reviews and commentaries have been written that discuss libroadrunner:

 Maggioli et al. conduct a speed comparison of various SBML simulators and conclude libroadrunner is the fastest SBML simulator currently available to researchers. 

 Koster et al,discuss the speed advantages of libroadrunner for solving differential equations compared to solving stochastic systems.

Development
Development of libroadrunner is primarily funded through research grants from the National Institutes of Health

See also 
 List of systems biology modeling software

References

External links 
 GitHub page

Systems biology
Ordinary differential equations
Software using the Apache license