[great-users] Need to compile only the relevant parts inmodeltransformations

Daniel Balasubramanian daniel at isis.vanderbilt.edu
Sat May 2 23:49:11 CDT 2009


Hi Gurkan,

>1. How can I only run the GenerateGR interpreter? Is it through the
CodeGenerator or the GReAT Master Interpreter? I could not see an icon
or a way to solely invoke the GenerateGR intrepreter

>From the GME window, if you File > Run Interpreter, you should see an option such as "Generate GR Transformation Rules" -- if you run only this interpreter, it should generate only the transformation rules.

>2. I tried my best to understand your second recommendation, but
could not adequately understand it. Could you elaborate on that a
little more? With IDE dou you mean VisualStudio?

When you run your transformations using the GReAT Master Interpreter, you're using what we call the "GR-Engine", which is an interpreted way of running the transformation.  If you use the Code Generator (for steps on how to do this, look in the /doc directory at either the GReAT Manual or the Step-by-step-guide.pdf), then you get a visual studio project and code that you can compile.  Compiling this code gives you an executable that you can then use to run your transformations (and this .exe is usually ~10x faster than the GR-Engine with tests run in the past).  If you use the code generator, then part of what gets generated includes the .h and .cpp files for the meta-model(s).  By keeping all of these generated files in an external directory, you can control when they get reloaded into the IDE (Visual Studio in this case).  This way, if you need to re-generate your transformation (for instance, because the rules changed, but not the meta-models) then the .h and .cpp files for the meta-model(s) don't get reloaded automatically by the GReAT Master Interpreter, and you can simply reload only the .h and .cpp files for the transformation rules inside Visual Studio, and only they will get re-compiled.

Please let me know if you need more help with any of this, I'm glad to assist you.

Thanks,
Daniel

-----Original Message-----
From: great-users-bounces at list.isis.vanderbilt.edu on behalf of Gürkan Özhan
Sent: Sat 5/2/2009 6:57 PM
To: great-users
Subject: Re: [great-users] Need to compile only the relevant parts inmodeltransformations
 
Hello Daniel,
   Unfortunately I could not try either of your proposed methods.
   1. How can I only run the GenerateGR interpreter? Is it through the
CodeGenerator or the GReAT Master Interpreter? I could not see an icon
or a way to solely invoke the GenerateGR intrepreter
   2. I tried my best to understand your second recommendation, but
could not adequately understand it. Could you elaborate on that a
little more? With IDE dou you mean VisualStudio?

   I am currently trying the GReAT master interpreter in running my
transformations.

   Thanks in advance,

Gurkan

On Sun, May 3, 2009 at 12:09 AM, Daniel Balasubramanian
<daniel at isis.vanderbilt.edu> wrote:
> Hi Gurkan,
>
> For a quick solution, you can try one of the following.
>
> (1) Only run the GenerateGR interpreter so that the metamodels are not regenerated by UDM and subsequently recompiled, or if that doesn't work,
> (2) Use the code generator, and instead of keeping the files in the default directory (/gen), keep all the files in a separate directory and have a script which copies *only* the generated transformation rules from /gen to the new directory and that way the IDE will see the metamodels haven't changed and won't try to recompile them.
>
> Are you currently using the GR-Interpreter or the Code Generator to run your transformations?
>
> Thanks,
> Daniel
>
> -----Original Message-----
> From: great-users-bounces at list.isis.vanderbilt.edu on behalf of Gürkan Özhan
> Sent: Sat 5/2/2009 6:46 AM
> To: great-users
> Subject: [great-users] Need to compile only the relevant parts in modeltransformations
>
> Dear All,
>    I am not sure, but a similar mail might have been posted to the
> list before. Therefore my apologies if the same question was arised,
> but I am really frustrated with the time it takes in my model
> transformations. My source and target metamodels are quite big (each
> about 4-5 Mbytes of mga files). Moreover my transformation definitions
> are also considerably large, and seem to grow even further. For the
> time being, only the compilation of the metamodels and the model
> transformation definitions when executing the GReAT master interpreter
> on my computer takes roughly about 10 minutes. I am desperately
> seeking to shorten this painful process. The most obvious efficiency
> to achieve is to avoid the re-compilation of the source and target
> metamodels each time a change pertaining to the rule definitions is
> made. I would be grateful if somebody provides me an advice on this.
> Any other hints and tips to reduce model-to-execution time is
> appreciated
>   Best regards.
>
> Gurkan Ozhan
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