array size

[Carlos Alberto Bulant]

Hi all,

i'm using cygwin in my c++ netbeans project.

i'm using widows xp sp3 32bits + netbeans 6.7.1 + cygwin


i need to use big float arrays, but i can't make it run. the
compilation is succesfull, but when i run, even a simple code like
this:

//-----------------------------------------------------------
int main(int argc, char** argv) {

int n = 729000;
float x2[n];

for (int i = 0; i < n ; ++i) {
printf("%f - ", x2[i]);
}

return (EXIT_SUCCESS);
}
//----

crash, showing this error on the console:
//----
5 [main] mixcf 12792 _cygtls::handle_exceptions: Error while dumping
state (probably corrupted stack)
/cygdrive/d/develop/NetBeans
6.7.1/dlight1/bin/nativeexecution/dorun.sh: line 51: 12792
segmentation fault (core dumped) /bin/sh "${PIDFILE}.sh"
//----


and this file is created:
//----
Exception: STATUS_STACK_OVERFLOW at eip=0040136F
eax=000CEEB0 ebx=00000000 ecx=00032CB0 edx=61102EDC esi=611021A0 edi=0040160C
ebp=0022CCE8 esp=0022CCA8
program=d:\carlitos\Develop\NetBeans-Projects\C,C++,FORTRAN-tests\MixCF\dist\Debug\Cygwin-Windows\mixcf.exe,
pid 12792, thread main
cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
Stack trace:
Frame Function Args
0022CCE8 0040136F (00000001, 6116C310, 00670090, 0022CC70)
0022CD98 610060D8 (00000000, 0022CDD0, 61005450, 0022CDD0)
61005450 61004416 (0000009C, A02404C7, E8611021, FFFFFF48)
5 [main] mixcf 12792 _cygtls::handle_exceptions: Error while
dumping state (probably corrupted stack)
//----


i hope you can tellme what can i do to solve this, because i need to
work with much bigger arrays...

thanks in advance

carlitos

PD: sorry for my inglish, i'm from argentina, we speak spanish...

[Lorin Netsch]

Carlos,

Large arrays like this are better allocated on the heap. Could you try
using "new" and see if that works?

Regards,

Lorin Netsch

-----Original Message-----
From: Carlos Alberto Bulant [mailto:address-removed]
Sent: Monday, October 12, 2009 2:26 PM
To: address-removed
Subject: array size

Hi all,

i'm using cygwin in my c++ netbeans project.

i'm using widows xp sp3 32bits + netbeans 6.7.1 + cygwin


i need to use big float arrays, but i can't make it run. the
compilation is succesfull, but when i run, even a simple code like
this:

//-----------------------------------------------------------
int main(int argc, char** argv) {

int n = 729000;
float x2[n];

for (int i = 0; i < n ; ++i) {
printf("%f - ", x2[i]);
}

return (EXIT_SUCCESS);
}
//----

crash, showing this error on the console:
//----
5 [main] mixcf 12792 _cygtls::handle_exceptions: Error while dumping
state (probably corrupted stack)
/cygdrive/d/develop/NetBeans
6.7.1/dlight1/bin/nativeexecution/dorun.sh: line 51: 12792
segmentation fault (core dumped) /bin/sh "${PIDFILE}.sh"
//----


and this file is created:
//----
Exception: STATUS_STACK_OVERFLOW at eip=0040136F
eax=000CEEB0 ebx=00000000 ecx=00032CB0 edx=61102EDC esi=611021A0
edi=0040160C
ebp=0022CCE8 esp=0022CCA8
program=d:\carlitos\Develop\NetBeans-Projects\C,C++,FORTRAN-tests\MixCF\dist
\Debug\Cygwin-Windows\mixcf.exe,
pid 12792, thread main
cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
Stack trace:
Frame Function Args
0022CCE8 0040136F (00000001, 6116C310, 00670090, 0022CC70)
0022CD98 610060D8 (00000000, 0022CDD0, 61005450, 0022CDD0)
61005450 61004416 (0000009C, A02404C7, E8611021, FFFFFF48)
5 [main] mixcf 12792 _cygtls::handle_exceptions: Error while
dumping state (probably corrupted stack)
//----


i hope you can tellme what can i do to solve this, because i need to
work with much bigger arrays...

thanks in advance

carlitos

PD: sorry for my inglish, i'm from argentina, we speak spanish...

[Lorin Netsch]

Carlos,

Large arrays like this are better allocated on the heap. Could you try
using "new" and see if that works?

Regards,

Lorin Netsch

-----Original Message-----
From: Carlos Alberto Bulant [mailto:address-removed]
Sent: Monday, October 12, 2009 2:26 PM
To: address-removed
Subject: array size

Hi all,

i'm using cygwin in my c++ netbeans project.

i'm using widows xp sp3 32bits + netbeans 6.7.1 + cygwin


i need to use big float arrays, but i can't make it run. the
compilation is succesfull, but when i run, even a simple code like
this:

//-----------------------------------------------------------
int main(int argc, char** argv) {

int n = 729000;
float x2[n];

for (int i = 0; i < n ; ++i) {
printf("%f - ", x2[i]);
}

return (EXIT_SUCCESS);
}
//----

crash, showing this error on the console:
//----
5 [main] mixcf 12792 _cygtls::handle_exceptions: Error while dumping
state (probably corrupted stack)
/cygdrive/d/develop/NetBeans
6.7.1/dlight1/bin/nativeexecution/dorun.sh: line 51: 12792
segmentation fault (core dumped) /bin/sh "${PIDFILE}.sh"
//----


and this file is created:
//----
Exception: STATUS_STACK_OVERFLOW at eip=0040136F
eax=000CEEB0 ebx=00000000 ecx=00032CB0 edx=61102EDC esi=611021A0
edi=0040160C
ebp=0022CCE8 esp=0022CCA8
program=d:\carlitos\Develop\NetBeans-Projects\C,C++,FORTRAN-tests\MixCF\dist
\Debug\Cygwin-Windows\mixcf.exe,
pid 12792, thread main
cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
Stack trace:
Frame Function Args
0022CCE8 0040136F (00000001, 6116C310, 00670090, 0022CC70)
0022CD98 610060D8 (00000000, 0022CDD0, 61005450, 0022CDD0)
61005450 61004416 (0000009C, A02404C7, E8611021, FFFFFF48)
5 [main] mixcf 12792 _cygtls::handle_exceptions: Error while
dumping state (probably corrupted stack)
//----


i hope you can tellme what can i do to solve this, because i need to
work with much bigger arrays...

thanks in advance

carlitos

PD: sorry for my inglish, i'm from argentina, we speak spanish...

[Valeriy Soldatov]

1) You can add "-Wl,--stack,16777216" into Linker|Additional Options field
2) rewrite code

[Carlos Alberto Bulant]

Hi, thanks for answering...

i try adding "-Wl,--stack,16777216" into Linker|Additional Options
field, and it works, i would like to know what do the parameters
mean...

respect using the heap (new), i belive it's not a posibility, because
i need multidimensional arrays (5 dimensions):

float A[X][Y][Z][dim4][dim5]

and the A array has to be passed to a FORTRAN subroutine for a heavy
number crushing algorithm, and i need all its element to be allocated
contiguosly in memory, i think that if i create A dinamicaly in the
heap using the new opertator, the elements will not be together, am i
wright?

any other sugestions?

which is the maximum number of elements that i can allocate in A??

thanks in advance


2009/10/12 Valeriy Soldatov <address-removed>:

[Valeriy Soldatov]

From http://www.cygwin.com/ml/cygwin/1998-09/msg00120.html:

[Labhrainn Aemilianus]

When you refer to the size of an object or variable in the strictest sense, you are talking about how much memory it takes up. C++ will tell you how much memory something takes in bytes (Remember, a byte is 8 bits, with bits being either a binary 0 or 1). To figure out the size of something simply use this syntax:
sizeof(variable)

For instance, you could do this:
#include <iostream>
using namespace std;

int main()
{
cout << "sizeof(char) = " << sizeof(char) << endl;
cout << "sizeof(short) = " << sizeof(short) << endl;
cout << "sizeof(int) = " << sizeof(int) << endl;
// and so on . . .
}