From debjyoti at gmail.com  Fri Oct 24 00:44:39 2008
From: debjyoti at gmail.com (Debjyoti Paul)
Date: Thu, 23 Oct 2008 15:44:39 -0700
Subject: [uDraw(Graph)-Users] Performance issues and scaling enhancement
	request
Message-ID: <9ed8e5050810231544r53d2e1b7y3cd8787aaac0ec88@mail.gmail.com>

Hi

I just started using uDraw for graph viewing and find it useful. It has many
features which are superior to the tool I was previously using (VCG) like
navigation/scaling/views etc. I have 2 issues though

1. Runtime: Loading even small graphs takes 20-30 seconds. This is on a 3.0
Ghz Pentium running Redhat EE4. The CPU is not loaded (as seen using 'top'
). Larger graphs take much longer. Is there a way to speedup up this ? If
this is due to optimizing of the layout, can this be switched off ? If this
is due to TCL interpretation of the graph file, can this be done in C/C++
for faster runtime and leave the graphics/non-runtime intensive parts to TCL
?

2. The scaling feature is nice expect that the labels and other text are not
scaled. It would be very useful if text was visible at different scalings.
It is ok if scaling is not continuous from 1-100 and does jumps of 10's.
Like 100%/90%/80% etc.

Again, these are just 2 issues I have. Otherwise uDraw is quite good and
stable.

Regards
Debjyoti

-- 
Regards
Debjyoti
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From debjyoti at gmail.com  Fri Oct 24 00:47:26 2008
From: debjyoti at gmail.com (Debjyoti Paul)
Date: Thu, 23 Oct 2008 15:47:26 -0700
Subject: [uDraw(Graph)-Users] Fwd: Performance issues and scaling
	enhancement request
In-Reply-To: <9ed8e5050810231544r53d2e1b7y3cd8787aaac0ec88@mail.gmail.com>
References: <9ed8e5050810231544r53d2e1b7y3cd8787aaac0ec88@mail.gmail.com>
Message-ID: <9ed8e5050810231547u7fb8aab3y7648fa2510fc590e@mail.gmail.com>

Oops, forgot to attach file !

---------- Forwarded message ----------
From: Debjyoti Paul <debjyoti at gmail.com>
Date: Thu, Oct 23, 2008 at 3:44 PM
Subject: Performance issues and scaling enhancement request
To: udrawgraph-users at informatik.uni-bremen.de


Hi

I just started using uDraw for graph viewing and find it useful. It has many
features which are superior to the tool I was previously using (VCG) like
navigation/scaling/views etc. I have 2 issues though

1. Runtime: Loading even small graphs takes 20-30 seconds. This is on a 3.0
Ghz Pentium running Redhat EE4. The CPU is not loaded (as seen using 'top'
). Larger graphs take much longer. Is there a way to speedup up this ? If
this is due to optimizing of the layout, can this be switched off ? If this
is due to TCL interpretation of the graph file, can this be done in C/C++
for faster runtime and leave the graphics/non-runtime intensive parts to TCL
?

2. The scaling feature is nice expect that the labels and other text are not
scaled. It would be very useful if text was visible at different scalings.
It is ok if scaling is not continuous from 1-100 and does jumps of 10's.
Like 100%/90%/80% etc.

Again, these are just 2 issues I have. Otherwise uDraw is quite good and
stable.

Regards
Debjyoti

-- 
Regards
Debjyoti



-- 
Regards
Debjyoti
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From mawe at informatik.uni-bremen.de  Fri Oct 24 10:41:53 2008
From: mawe at informatik.uni-bremen.de (Mattias Werner)
Date: Fri, 24 Oct 2008 10:41:53 +0200
Subject: [uDraw(Graph)-Users] Performance issues and scaling enhancement
 request
In-Reply-To: <9ed8e5050810231544r53d2e1b7y3cd8787aaac0ec88@mail.gmail.com>
References: <9ed8e5050810231544r53d2e1b7y3cd8787aaac0ec88@mail.gmail.com>
Message-ID: <49018A51.6020102@informatik.uni-bremen.de>

Hi,

Debjyoti Paul schrieb:
> I just started using uDraw for graph viewing and find it useful. It has

thank you.

> 1. Runtime: Loading even small graphs takes 20-30 seconds. This is on a
> 3.0 Ghz Pentium running Redhat EE4. The CPU is not loaded (as seen using
> 'top' ). Larger graphs take much longer. Is there a way to speedup up

This must be a problem on your machine. On my machine here, which is a
Pentium 4 3.0GHz with openSuSE 10.3, your example graph loads immediately
from command line and from the API.

I've written two API commands in a file to show you:
menu(file(open_graph("eco_cover_reduced_g.udg")))
menu(file(quit))

Running this with the time command:
-> time uDrawGraph -pipe <eco_cover_reduced_g.api
ok
ok
quit

real    0m0.704s
user    0m0.268s
sys     0m0.032s

Even if I replace open_graph above with open_graph_placed:
-> time uDrawGraph -pipe <eco_cover_reduced_g_placed.api
ok
ok
quit

real    0m0.758s
user    0m0.296s
sys     0m0.044s

runtime doesn't change significantly.

If you start uDraw(Graph) without a graph, does it start immediately?
If you load a graph from the menu ist it slow or fast?
What happens, if you load it via API as I did above? Which times does
the time command show?

> this ? If this is due to optimizing of the layout, can this be switched
> off ? If this is due to TCL interpretation of the graph file, can this
> be done in C/C++ for faster runtime and leave the graphics/non-runtime
> intensive parts to TCL ?

Only the user interface of uDraw(Graph) is written in Tcl, everything else
is written in a functional programming language that compiles to C.

> 2. The scaling feature is nice expect that the labels and other text are
> not scaled. It would be very useful if text was visible at different
> scalings. It is ok if scaling is not continuous from 1-100 and does
> jumps of 10's. Like 100%/90%/80% etc.

This was a design decision several years ago, which can't be changed easily,
I am sorry. If you need smaller text, you could use smaller fonts but
that is not the same as scaling, I know.

Regards,
Mattias Werner
uDraw(Graph) project

-- 
		Dipl. Inform. Mattias Werner
		Bremen University, FB 3
		E-Mail: mawe at informatik.Uni-Bremen.DE
		WWW:	http://www.informatik.uni-bremen.de/~mawe/


From debjyoti at gmail.com  Fri Oct 24 20:42:26 2008
From: debjyoti at gmail.com (Debjyoti Paul)
Date: Fri, 24 Oct 2008 11:42:26 -0700
Subject: [uDraw(Graph)-Users] API: window(position(int,int))
Message-ID: <9ed8e5050810241142nc1d3ab2u7ba37845c99eef78@mail.gmail.com>

Hi

Minor issue with Window(position()) api. I always get a 'Tcl/Tk Error: bad
geometry specification "40+40" ' when I use this api. Please see attached
command file. I tried single quotes/double quotes and '+' sign but couldn't
fix it. Can you take a look ?

-- 
Regards
Debjyoti
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