Re: [myrinet] GM-1.5, Linux-2.4.14, gm_board_info hangs

Hi,

This is a kernel "oops"/seg fault.

Did you see any strange messages in the kernel log (dmesg) when you
GM_INSTALL?

What about when you ran the mapper, did you see any strange messages?

Did the gm_board_info hang happen on all of the nodes in your cluster,
or only a specific node?

Would it be possible for us to have remote access to this machine and
be able to load/unload the GM module (root) and experiment?

This is very strange. 

Susan


On Thursday 15 November 2001 02:48 pm, Ritch, David wrote:
> I'm a relative newcomer to myrinet, and I have a question.
>
> I'm attempting to run GM-1.5 on a cluster of dual-processor Pentium-4 nodes
> under RedHat-7.1.  I compiled the 2.4.14 kernel with kgcc, and compiled gm
> with CC="kgcc -I/usr/src/linux/include", so as to get the include files
> associated with the correct kernel.  I'm also running mpi-1.2.1..7,
> compiled with gcc.
>
> GM appears to work OK at first, but usually when I run a real application
> on it, a gm_board_info process is started by root, and goes into a disk
> hang (ps reports status of D).  At about the same time, the following
> appears in /var/log/messages:
>
> Nov 13 17:42:35 t0001 kernel: invalid operand: 0000
> Nov 13 17:42:35 t0001 kernel: CPU:    0
> Nov 13 17:42:35 t0001 kernel: EIP:    0010:[__free_pages_ok+92/512]    Not
> tainted
> Nov 13 17:42:35 t0001 kernel: EIP:    0010:[<c012ea1c>]    Not tainted
> Nov 13 17:42:35 t0001 kernel: EFLAGS: 00010202
> Nov 13 17:42:35 t0001 kernel: eax: 00000890   ebx: 00000000   ecx: c1000000
> edx: 00000000
> Nov 13 17:42:35 t0001 kernel: esi: c1e3e540   edi: f8920c24   ebp: 00000000
> esp: d0c91d38
> Nov 13 17:42:35 t0001 kernel: ds: 0018   es: 0018   ss: 0018
> Nov 13 17:42:35 t0001 kernel: Process systest (pid: 21412,
> stackpage=d0c91000)
> Nov 13 17:42:35 t0001 kernel: Stack: f891fe08 f891fe0c f891fe10 f891fe10
> 00000000 c1e3e540 f8920c24 d0c91d78
> Nov 13 17:42:35 t0001 kernel:        f88b4076 f7a82000 38f95000 00000000
> f7a820f4 f7a82000 d0ba0000 00000000
> Nov 13 17:42:35 t0001 kernel:        d0c91dc0 f88abbb9 f8920c18 00000004
> 080d1000 f7a82000 00000000 38f95000
>
> I'm not sure what is going on, but my myrinet does not appear to be
> working. Could someone help to enlighten me on this?
>
> Thanks,
>
> dbr
> --
> David B. Ritch
> High Performance Technologies, Inc.
> [email protected]

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-- 
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Susan Blackford
Member of Technical Staff
Myricom, Inc.
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