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GTAP Resources: Frequently Asked Questions

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FAQs
Memory RAM for full RunGTAP
I appreciate if anyone can give me hint regarding the amount of memory RAM we need to run the full RunGTAP. We're thinking in upgrading our computer systems and we have to consider the needs that models as RunGTAP and GTAPDyn impose. In particular we know that, for instance, the full RunGTAP model does not run in my PC with one giga memory -I get a message "unable to allocate sufficient memory. (I0STAT is 912)". Does anyone know how much memory is needed to run the full regional and sectoral specification model? In the case of GTAPDyn, how much is needed? Do you think it is advisable a more powerful computer like those with dou-processors? Are GEMPACK and RunGTAP compatible with UNIX? I have heard that is not feasible to expand the memory RAM further than 2 GB using the standard XP Professional, is that right? Overall, what do you advise: upgrade the memory RAM of the current PCs and run the models with UNIX or any upgrade WINDOWS or the acquisition of a type "server" system?...

Date Added: 10/30/2006

RunGTAP - Do I need a GEMPACK licence to change the standard condensation?
Do I need a GEMPACK licence to change the standard condensation (for example, to un-omit variable tf) of the GTAP model in GTAP.STI?...

Date Added: 7/23/2007

How to enter text in the version part of RunGTAP
I have loaded the default version of the GTAPAgg into RunGTAP. How do I enter the text in the version part of RunGTAP and what text should I enter?...

Date Added: 10/26/2010

RunGTAP auxillary programs not working
Some of the auxillary programs in some of the RunGTAP applications do not work. For example, the GEelast or PEelast programs do not work for the GTAP-E application? ...

Date Added: 5/29/2007

Altertax and ordinary change
How does one efficiently change each country's initial tms for imports of goods from all other regions with x percentage points (ie ordinary change to the tariff rate). How can this be done in GTAP?...

Date Added: 1/17/2006

RunGTAP/GEMPACK Compatibility
My version of RUNGTAP will not accept Gempack 9 exe files. Why?...

Date Added: 11/21/2005

ViewHar drop down menus
In Assignment 1, section 2 on the web course homework, it says viewhar provides a drop down box at the top right hand corner to browse between the different regions. I can't see any such drop down box from my viewhar. On the right hand side I have 2 drop down box: all trade and all sales. Please advise....

Date Added: 5/3/2005

TABmate not found in AnalysGE
I downloaded GTAP utilities and when doing the first post-installation check, in the Options Windows it says that the "TABmate.exe was not found". Is it OK or do I need to change it as with the case of AnalysGE ?...

Date Added: 5/3/2005

Differences between RunGtap and WinGem
What are the differences between RunGtap and WinGem?...

Date Added: 1/13/2005

Exogenous taxes
I am working with the Gtap in some trade policies simulations. I would like to quantify the impact of some trade policies that include conditions on rules of origin. I am aware that, unless I generate a new sector , I will not be able to proprerly design the shock. However, I think that I can simulate the trade policy implications by an import subsidy plus a tax on domestic consumption and on exports. The problem is that in the standard closure, taxes on domestic and imported purchases by firms, private households and government are not exogenous (tfm, tfd, tpm, tpd, tgm, tgd). My question is how can I exogenize these variables, that is to say which variable should become endogenous instead. Thank you very much for your help....

Date Added: 3/4/2003

Interpretation of ao [j,r] and aoall [j,r] in RunGTAP Tablo file [Version 5].
I am having a confusion about interpretation of ao [j,r] and aoall [j,r] in RunGTAP Tablo file [Version 5]. They are defined as:

Variable (all,j,PROD_COMM)(all,r,REG)
ao(j,r) # output augmenting technical change in sector j of r #;

Variable (all,j,PROD_COMM)(all,r,REG)
aoall(j,r) # output augmenting technical change in sector j of r #;

Variable (all,j,PROD_COMM)
aosec(j) # output tech change of sector j, worldwide #;
Variable (all,r,REG)
aoreg(r) # output tech change in region r #;

Then, there is an equation:

Equation AOWORLD
# sector/region specific average rate of output augmenting tech change #
(all,j,PROD_COMM)(all,r,REG)
ao(j,r) = aosec(j) + aoreg(r) + aoall(j,r);

What is the diffrence between ao[j,r] and aoall[j,r]? and is ao [j,r] endogenous and aoall[j,r] exogenous? -- what does the equation convey intuitively?
...


Date Added: 3/22/2001

Chapter 5
In Chapter 5 (Aggregation and Computation of Equilibrium Elasticities) of the GTAP-Book it is told that the matrix of the general equilibrium, own-price elasticities of demand is "qualitativly symmetric". Looking at table 5A (which this statement refers to) I cannot see any symmetry. What could be my error? What does "qualitativly" mean?

Thank you in advance for your help....


Date Added: 11/10/2000

ViewHar errors and issues
I tried to view and had several problems with "ViewHar". At one point got a message about how the version I was using was out of date (I think it came from the CD). Then I got several GPFs, and had to reboot....

Date Added: 9/27/2000

Chapter 5
In Chapter 5 (Aggregation and Computation of Equilibrium Elasticities) of the GTAP-Book it is told that the matrix of the general equilibrium, own-price elasticities of demand is "qualitatively symmetric". Looking at table 5A (which this statement refers ...

Date Added: 9/27/2000

GTAP mimic a change
Can anyone provide me with advice on how to make GTAP mimic a change in exchange rates? For example how would you impose a 10% depreciation of the Canadian dollar against all other currencies?...

Date Added: 9/27/2000

Inability to locate "highsub" of model
I am not able to locate the version "highsub" of the model. Please advise....

Date Added: 9/27/2000