[Scilab-users] scilab 6.1 crashes when trying to load big matfile (loadmatfile)

[Rafael Guerra]

Script runs fine on Win10, Scilab 6.1, 64 GB RAM.
But btw, the file a28.mat seems to have only 342MB.


-----Original Message-----
From: users <users-bounces at lists.scilab.org> On Behalf Of Stéphane Mottelet
Sent: Friday, June 19, 2020 10:15 AM
To: users at lists.scilab.org
Subject: Re: [Scilab-users] scilab 6.1 crashes when trying to load big matfile (loadmatfile)

it's the loadmatfile that crashes (here on Scilab-branch-6.1 under OSX, 
with 16Gb ram)

   "savematfile('a28.mat','a28');"
scilab-cli-bin(3310,0x115f1f5c0) malloc: can't allocate region
*** mach_vm_map(size=18446744071562067968) failed (error code=3)
scilab-cli-bin(3310,0x115f1f5c0) malloc: *** set a breakpoint in 
malloc_error_break to debug

Same crash with Scilab-branch-6.1 under Ubuntu 18.04, with 128Gb ram:

   "a28=[1:2^28];"
ATTENTION : Option -v7 ajoutée.

   "savematfile('a28.mat','a28');"
Segmentation fault (core dumped)

S.

Le 19/06/2020 à 08:57, Antoine Monmayrant a écrit :
> Hello all,
>
>
> Here is a small script that systematically crashes scilab on my machine:
>
>
> ////////////////////////////////
>
> // on my machine with 8Gb or ram and usual workload, n=28 crashes scilab
> n=[24,26,28];
>
> for i=n
>
>     disp('---- '+string(i)+' ----');
>     execstr('a'+string(i)+'=[1:2^'+string(i)+'];')
>     disp('a'+string(i)+'=[1:2^'+string(i)+'];')
> execstr("savematfile(''a"+string(i)+".mat'',''a"+string(i)+"'');")
> disp("savematfile(''a"+string(i)+".mat'',''a"+string(i)+"'');")
>     execstr("loadmatfile(''a"+string(i)+".mat'');")
>     disp("loadmatfile(''a"+string(i)+".mat'');")
>     disp('---- OK ----');
>
> end
>