you are basically creating 1000 * 100000 morphs (and complex ones). 
I would just do a matrix morph with just one morph and rendering the matrix in the canvas (overriding the #drawOn:)

BTW, I do not think VW would work like that either: IMO, that design (pre-generating the cells)  is bad and it never works. 
Other frameworks use a datasource design (like cocoa, swt� and basically all the serious frameworks I know about).
and no, we do not have a default design for this kind of big components (a serious absence, IMO).

Esteban

On 26 Jun 2014, at 10:00, Hern�n Morales Durand <hernan.morales@gmail.com> wrote:

Why not?
Do you know a better grid morph?

I have tested several ones but there is no way to visualize big matrices in Pharo (I am avoiding to switch to VisualWorks for now).

Cheers,

Hern�n



2014-06-26 9:51 GMT-03:00 Esteban Lorenzano <estebanlm@gmail.com>:
he, you are trying to open a tree with 1000 columns and 10000 rows. 
that will never work, not like that. 

Esteban


On 26 Jun 2014, at 09:45, Hern�n Morales Durand <hernan.morales@gmail.com> wrote:

Yes, sorry I forgot that. Pharo 3.0 clean image Latest update: #30850, on Windows 8
The VM is the one downloaded when you do

$ wget -O- get.pharo.org/30+vm | bash

Then you open and press F2, Display version information, CogVM 4.0.0 from May 15 2014.

Script to reproduce it:

Smalltalk garbageCollect.
[  | matrix rows cols tree |
rows := 10000.
cols := 1000.
matrix := Matrix rows: rows columns: cols.   
 1 to: rows do: [ : r | 
    1 to: cols do: [ : c |
        matrix at: r at: c put: SmallInteger maxVal atRandom ] ].

tree := TreeModel new.
tree columns: (
    (1 to: cols) collect: [ : col |
        TreeColumnModel new
            displayBlock: [ : node | (node content at: col) asString ];
            headerLabel: col asString ]).
tree roots: ((1 to: rows) collect: [ : nrow | matrix atRow: nrow ]).
tree openWithSpec ] timeToRun

Hern�n



2014-06-26 2:48 GMT-03:00 stepharo <stepharo@free.fr>:
Hi hernan

Which image?
What did you loaded?
Can you reproduce it?

Can someone explain what does it mean or why it happens?
Is that a common scenario for you?

I am measuring execution time for big matrices in CogVM 4.0.0. Image is unresponsive.

Cheers,

Hern�n