[Beowulf] Explanation of error message in MPICH-1.2.7

[Bill Rankin]

I often see this error when a MPI_Barrier() call is not placed in  
front of the MPI_Finalize().  One of the processes exits early and  
MPICH doesn't like that too much.

-b


On Oct 6, 2006, at 3:50 PM, Jeffrey B. Layton wrote:

> Afternoon cluster fans,
>
>  I'm working with a CFD code using the PGI 6.1 compilers and
> MPICH-1.2.7. The code runs fine for a while but I get an error
> message that I've never seen before:
>
>
> [2] MPI Internal Aborting program Deep nest in Check_incoming
> [2] Deep nest in Check_incoming
>
> This error message is in the error file from PBS. The output from
> the code gives the following:
>
>
> p2_15458:  p4_error: : 1
> p5_21530:  p4_error: net_recv read:  probable EOF on socket: 1
> p7_21548:  p4_error: net_recv read:  probable EOF on socket: 1
> p6_21539:  p4_error: net_recv read:  probable EOF on socket: 1
> rm_l_6_21544: (95.492188) net_send: could not write to fd=5, errno  
> = 32
> rm_l_2_15464: (95.835938) net_send: could not write to fd=5, errno  
> = 32
> rm_l_5_21535: (95.574219) net_send: could not write to fd=5, errno  
> = 32
> rm_l_7_21553: (95.410156) net_send: could not write to fd=5, errno  
> = 32
>
>
>  The code runs fine with other MPI implementations (Scali,
> MVAPICH, etc.) My googling efforts haven't yielded anything.
> Does anyone have any input on this?
>
> Thanks!
>
> Jeff
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