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

You might also want to try

	dmesg | ksymoops

to see if the backtrace it gives you provides any useful information.



On Thu, 15 Nov 2001, Susan Blackford wrote:
>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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