Division by zero weird problem on HP 8200 Elite SFF

Greetings,

I posted my message here, it appears now that my problem is hardware specific.  My machine has the following specifications:

HP Compaq 8200 Elite SFF
Intel Core i5-2500 Duo @3.3 GHz processor
8 GB memory

Windows 7 x 64

(I can provide more details if necessary)

This has been me puzzled for more than a week now!

We have an application where we lack in a division by zero. That request is deliberately built to raise exceptions in this case, with a call to the function _controlfp_s for edit masks on floating point exceptions.

Now, when you run in a division by zero pretty much all of our machines, Visual Studio 2005 debugger breaks in the right place in our source files. However, on this machine, the location of the break is in every sense and seems to be unrelated to the real cause of the failure. So as a test, I built a simple win32 C program with just the following lines of code:

int main (int argc, char * argv [])
{
float temp1, temp2, temp3;
unsigned int control;

_controlfp_s (& control, _EM_UNDERFLOW + _EM_INEXACT, _MCW_EM);

Temp1 = 1.0;
Temp2 = 0.0;
Temp3 = temp1/temp2;

return 0;
}

On all these 'good' machines, the code breaks when the temp3.  Among the other machines tested successfully, I had various hardware and operating systems, including Server 2008 R2, Windows XP x 32 and Windows 7 Pro x 64.  However, on this machine, the code stops at:

C:\Program Files (x 86) \Microsoft Visual Studio 8\VC\crt\src\tidtable.c

function:

__set_flsgetvalue()

In reviewing the records I have change the assembler code, everything seems fine until I hit the "ptsps" statement... then all records seem to be messed up (vs research as expected on a good machine). When comparing the stack on the good vs. bad, I also see entries of pile on the wrong machine, I don't see a good...

Now... Here's what I did to solve problems:
1. a disc image of the original disc HP on a hot spare and the original picture restored.
2. only installed Visual Studio 2005 Pro - portion of C++.
3 - tested above, code has always failed.

4 - update all service packs Windows and tested above code.  Failed.

5 - update all service packs, the Studio 2005 and tested above code. Failed.

6 uninstalling all the bloatware and tested above code. Failed.

7 - updating the BIOS and firmware and tested above code. Failed.

8. install Visual Studio 2010 and tested above code. Failed.

Then... I decided to take my spare disk image and install it on a similar, but a little older HP computer that we have, which has the following specifications:

HP Compaq 8000 Elite SFF
Intel Core Duo E8400 #3 GHz
4 GB memory

I went through the process of installation very well, even though she used the typewriter 8200 recovery partition.  On this machine, I simply installed the operating system and Visual Studio 2005 Pro - portion of C++.  No service packs not whatsoever (even if the Studio 2005 requires an update for 'vista') and the code worked as expected!

So, that leaves me about almost everything but the material!  Also note that I tried to disable several processors and all optimization of the BIOS on the 8200, without success.

I don't see anything else I can try... Please help!

Wow!

After the posting of this message to a friend... He found a document showing very similar symptoms on some of their CPUs from intel... I then found the exact document who applied to our specific processor (intel i5-2500) here:

http://www.Intel.com/content/dam/www/public/us/en/documents/specification-updates/2nd-Gen-core-desktop-specification-update.PDF

See Erratum BJ1

This article describes pretty much exactly what I run into!  (Seriously), I never thought this would be a problem at THIS level!

Tags: HP Desktops

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