[gecode-users] Edge-finding evaluation

[Christian Schulte]

Dear Roger,

That sounds very interesting. 

But first a word of warning: the cumulative scheduling propagator in Gecode
3.4.2 is still experimental: we ourselves have not fully evaluated its
performance and so on (the documentation in MPG marks the scheduling support
as still experimental).

As it comes to integration of your algorithm you might want to consult Part
P (Programming Propagators) in MPG (Modeling and Programming with Gecode).
Implementing a new constraint requires the implementation of the
corresponding propagator as detailed there.

The function stop(t, cout) stops the timer t and prints it on cout (a
standard output stream). Please consult the files:
	gecode/driver/script.hpp
	gecode/driver/script.cpp
In general these pieces of information are found best by searching the
reference documentation for Gecode.

As an alternative, when you want to print to a textfile you should redirect
the output printed in a standard shell to a file, so there is definitely no
need to hack the script stuff in Gecode.

For setting the time limit, just invoke the -help switch of any of the
Gecode examples. It tells you how (also consult Chapter 11 in the first part
of MPG how to use the commandline driver).

Best
Christian

--
Christian Schulte, www.ict.kth.se/~cschulte/

-----Original Message-----
From: users-bounces at gecode.org [mailto:users-bounces at gecode.org] On Behalf
Of Roger Kameugne
Sent: Tuesday, November 23, 2010 10:31 AM
To: users at gecode.org
Subject: [gecode-users] Edge-finding evaluation

Hi all,
We have developed  a new cumulative edge-finding algorithm and we need
to evaluate it on RCPSP  with the current best know implement provide
in gecode 3.4.2  (Petr Vilim). We are new user of gecode and we have
used the Microsoft Visual Studio 2008.  We have many questions about
the the cumulative propagator.

First of all, how can we integrate our edge-finding algorithm and used
the time-table and overload checking?

To print out the runtime in a .txt file, we modify the file script.cpp
but we didn't know the type of  stop(t, cout)?

The last but not the least question is about the setting of the time
limit. Where and how can we limit the runtime?
Thanks in advance.
Roger

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