Re: Most programs crash under openmosix.

Gert-
  What kind of hardware are you using? Have you tested all cluster
memory? ECC is highly recommened becuase openMosix tends make low-
average grade equpemnt fail even it works fine the rest of the time.
Does the app run with migration turned off? On a non Om kernel?

Evan


On 3/15/06, Gert Burger <[email protected]> wrote:
> Hi
>
> We run a smallish(18 pc) cluster for AI smulations. At least we are
> trying to.
>
> The processes migrate properly but openmosixtest packages and almost all
> of our simulations crash after only a few seconds with a kernel oops.
> Below is the oops.
>
> We are running openmosix 2.4.30 and openmosix-user 0.3.6-r3 from the
> gentoo portage.
>
> Any ideas anyone?
>
> The openmosixtests freeze the machine within 5-10 seconds.
>
> Oops from our program:
> <1>Unable to handle kernel NULL pointer dereference at virtual address
> 0000004c
> c0172b9d
> *pde = 00000000
> Oops: 0002
> CPU:    0
> EIP:    0010:[<c0172b9d>]    Not tainted
> Using defaults from ksymoops -t elf32-i386 -a i386
> EFLAGS: 00010286
> eax: 00000000   ebx: ce7c4720   ecx: 0805672c   edx: 00000000
> esi: 08057000   edi: 08057000   ebp: 00000000   esp: cdfe1b2c
> ds: 0018   es: 0018   ss: 0018
> Process ls (pid: 1659, stackpage=cdfe1000)
> Stack: cdfe1b30 ce7c4660 ce7c4720 00000000 00000009 c017510d 08056380
> 0805672c
> 00000380 00000003 00001812 0000000e c041f8f0 fffffffb 00000000 00000246
> c041f8f0 00000246 00000002 000038c0 cf3651bc cf3650e0 000053aa 00000380
> Call Trace:    [<c017510d>] [<c033336a>] [<c01748c0>] [<c0158624>]
> [<c015881f>]
> [<c0105da2>] [<c0109f3b>] [<c01f1aa7>] [<c0105d60>] [<c01f0613>]
> [<c01f6f5d>]
> [<c0109e16>]
> Code: 89 78 4c 89 78 48 8b 5c 24 08 31 c0 8b 74 24 0c 8b 7c 24 10
>
>
> >>EIP; c0172b9d <set_brk+3d/c0>   <=====
>
> Trace; c017510d <load_elf_binary+84d/10b0>
> Trace; c033336a <inet_recvmsg+4a/60>
> Trace; c01748c0 <load_elf_binary+0/10b0>
> Trace; c0158624 <search_binary_handler+154/200>
> Trace; c015881f <do_execve+14f/330>
> Trace; c0105da2 <sys_execve+42/80>
> Trace; c0109f3b <call_with_regs+4b/94>
> Trace; c01f1aa7 <deputy_syscall+a7/2b0>
> Trace; c0105d60 <sys_execve+0/80>
> Trace; c01f0613 <deputy_main_loop+433/590>
> Trace; c01f6f5d <mosix_pre_usermode_actions+6d/c0>
> Trace; c0109e16 <straight_to_mosix+5/d>
>
> Code;  c0172b9d <set_brk+3d/c0>
> 00000000 <_EIP>:
> Code;  c0172b9d <set_brk+3d/c0>   <=====
>    0:   89 78 4c                  mov    %edi,0x4c(%eax)   <=====
> Code;  c0172ba0 <set_brk+40/c0>
>    3:   89 78 48                  mov    %edi,0x48(%eax)
> Code;  c0172ba3 <set_brk+43/c0>
>    6:   8b 5c 24 08               mov    0x8(%esp),%ebx
> Code;  c0172ba7 <set_brk+47/c0>
>    a:   31 c0                     xor    %eax,%eax
> Code;  c0172ba9 <set_brk+49/c0>
>    c:   8b 74 24 0c               mov    0xc(%esp),%esi
> Code;  c0172bad <set_brk+4d/c0>
>   10:   8b 7c 24 10               mov    0x10(%esp),%edi
>
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by xPML, a groundbreaking scripting language
> that extends applications into web and mobile media. Attend the live webcast
> and join the prime developer group breaking into this new coding territory!
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
> _______________________________________________
> openMosix-general mailing list
> openMosix-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> https://lists.sourceforge.net/lists/listinfo/openmosix-general
>


-------------------------------------------------------
This SF.Net email is sponsored by xPML, a groundbreaking scripting language
that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid0944&bid$1720&dat1642