GTAP Models: RunGTAPWhat is RunGTAP?
GTAP is formulated and solved using GEMPACK, a flexible system for solving AGE models. RunGTAP is a visual interface to various GEMPACK programs. RunGTAP allows the user to run simulations interactively in a Windows environment using the GTAP general equilibrium model. No previous knowledge of the GEMPACK language or programming skills is necessary to use the program. Results and complementary information for the analysis are also provided in a Windows environment and can be accessed interactively. RunGTAP will run the standard GTAP Model with any GTAP Data Base which is not too large. To use larger data bases, or to modify the equations of the GTAP Model, or to modify the standard condensation of the GTAP Model, you will also need a GEMPACK license (of which there are several types). For more information about GEMPACK licenses, please contact the Centre of Policy Studies.
RunGTAP is freely available for download below.
Download RunGTAP (v362, November 2013) RunGTAP Patches
RunGTAP contains the condensed (standard) and uncondensed version of the GTAP Model. To change to the uncondensed version, click on version | modules and then on GTAP under global settings. This will allow you to select GTAPU.tab - the uncondensed version. For further information on RunGTAP and on condensation see:
Hands-on Computing with RunGTAP and WinGEM to Introduce GTAP and GEMPACK
by Pearson, Ken and Mark Horridge, Centre of Policy Studies
This version of RunGTAP does not require a license to run GTAP Data Base aggregations of less than 10 by 10. If you want to run a larger aggregation, you will need to obtain an Introductory (Large-simulations) license or higher from Gempack. We also suggest that you check for product updates after installing this and on a regular basis hereafter.
This document provides several examples of hands-on computing you can carry out to familiarize yourself with the RunGTAP and GEMPACK software. In Part A, the Examples are directed at finding out about the data in a GTAP Data Base. In Part B, the Examples are directed at carrying out simulations with GTAP. Part C describes how you can make a new version (that is, aggregation of the GTAP Data Base) for use with RunGTAP. Part D assumes you already know something of GEMPACK--it tells how you can adapt and run your own economic models within RunGTAP. Part E tells you how can find out more about RunGTAP and GEMPACK, and mention hands-on computing you may like to try with models other than GTAP.
An online tutorial for RunGTAP is now available. Click the link below to watch this video.
by Mirza, Tasneem
If your media player experiences trouble finding and installing the correct file format to properly play the tutorial, click the links below to install the following audio and video codecs.
RunGTAP contains a number of applications listed below. A number of other applications used in GTAP Short Courses are also listed below.
- US3X3 model described in Burfisher (2011), for the GTAP 101 Course
- ACRS3X31: Short course 3x3 application with RORDELTA=1
- UNCON3X3: Short course 3x3 application with uncondensed version of the GTAP Model
- ACRS3x3: Short course 3x3 application
- ASA7x7: Short course 7x7 application
- ASADEFTA: GTAP Course 7x5 Aggregation with S.Africa-Rest of Southern Africa (SADC) FTA in place
- ASAEUFTA: GTAP COURSE 7x5 Aggregation with South Africa-EU FTA
- ASAEUSDC: GTAP COURSE 7x5 Aggregation with SA-EU and SADC FTAs in place
- BOOK3x3: GTAP Book 3x3 aggregation US-EU-ROW
- CH7: Developing Country Expansion and Relative Wages in Industrial Countries
by Robert McDougall and Rod Tyers
- CH8: An Evaluation of the Cairns Group Strategies for Agriculture in the Uruguay Round
by Donald MacLaren
- CH9: Free Trade in the Pacific Rim: On what basis?
by Linda M.Young and Karen M. Huff
- CH10: Evaluating the benefits of abolishing the MFA in the Uruguay Round package
by Yongzheng Yang, Will Martin, and Koji Yanagishima
- CH11: Global climate change and agriculture
by Marinos E. Tsigas, George B. Frisvold, and Betsey Kuhn
- CH12: Environmental Policy Modeling
by Carlo Perroni and Randall Wigle
- CH13: Environmental effects of agricultural research with technological spillovers
by George B. Frisvold
- SSA: Systematic Sensitivity Analysis using RunGTAP, Application from Channing Arndt and Thomas Hertel in their paper titled: "Revisiting the fallacy of free trade", published in the Review of International Economics 5(2): 221-229. See below for more details on SSA.
Other Applications used in GTAP Short Courses
- EUSAF (Short course version)
Bilateral Free Trade Agreements and Customs Unions: The Impact of the EU Republic of South Africa Free Trade Agreement on Botswana
by Walmsley, Terrie and Scott McDonald
A Comparative Analysis of the EU-Morocco FTA vs. Multilateral Liberalization
by Elbehri, Aziz and Thomas Hertel
- GTAP Technical Paper No. 07
Liberalization and Capital Accumulation in the GTAP Model
by Francois, Joseph and Brad McDonald
- GTAP Technical Paper No. 15
Endogenous International Technology Spillovers and Biased Technical Change in the GTAP Model
by van Meijl, Hans and Frank van Tongeren
- GTAP Technical Paper No. 16
GTAP-E: An Energy-Environmental Version of the GTAP Model
by Burniaux, Jean-Marc and Truong Truong
- Revised GTAP-E Model
Other Programs and Features of RunGTAP
Under the View drop-down menu, users can select a number of useful programs/options to run with their experiments:
AnalyseGE is a new software tool which is aimed at assisting modelers to move quickly between these different information sources. The AnalyseGE interface gives users "point and click" access to the equations of the model,the data, and the simulation results. This greatly reduces the burden associated with analyzing simulations, and offers the potential for significantly boosting the productivity of applied general equilibrium modelers. AnalyseGE may be downloaded for free from the CoPS website. AnalyseGE is documented in AnalyseGE; Software assisting Modellers in the Analysis of their results, by Pearson, Hertel and Horridge
This is a program that organizes the GTAP Data Base in such a way that it is simple to view certain important economic variables in a tabular form. For example, by using VIEWHAR's facilities for creating row, column, and matrix shares, the user can quickly obtain information about a given country's share of consumption in GDP, or the cost share of electricity in iron and steel production.
- Volume Results
In addition to the welfare decomposition, users can also get the volume results associated with the equilibrium percentage changes in output. These may be interpreted as volume changes measured in millions of US dollars at base period prices.
- Welfare Decomposition
After each simulation, a complete welfare decomposition can be provided using the program developed by Wusheng Yu, based on the work of Huff and Hertel, as documented in GTAP Technical Paper No. 5. The program permits the user to break down the regional equivalent variation into its component parts, including changes due to allocative efficiency, terms of trade, improved technology, and endowments.
- Systematic Sensitivity Analysis
Systematic sensitivity analysis can also be undertaken on the shocks and parameters. Additional information on SSA can be obtained from Implementing Systematic Sensitivity Analysis Using GEMPACK (2000) by Pearson, Ken and Channing Arndt, GTAP Technical Paper No. 03.
Users can also use the subtotals facility in RunGTAP to decompose the changes (or percentage changes) in the endogenous variables as sums of the contributions made by the change in each exogenous variable. Additional information can be obtained from Decomposing Simulation Results with Respect to Exogenous Shocks (2000), by Harrison, J, Mark Horridge and Ken Pearson, published in Computational Economics.
If you are experiencing problems or you have questions about using RunGTAP, we strongly encourage you to look at the following support options:
- Check for product updates
- Read through existing FAQs about RunGTAP.
- Subscribe to the GTAP-L mailing list
- Contact gtapsupportpurdue.edu.