42 строки
1.8 KiB
Plaintext
42 строки
1.8 KiB
Plaintext
# -*- text -*-
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#
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# Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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# University Research and Technology
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# Corporation. All rights reserved.
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# Copyright (c) 2004-2005 The University of Tennessee and The University
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# of Tennessee Research Foundation. All rights
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# reserved.
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# Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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# University of Stuttgart. All rights reserved.
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# Copyright (c) 2004-2006 The Regents of the University of California.
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# All rights reserved.
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# $COPYRIGHT$
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#
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# Additional copyrights may follow
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#
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# $HEADER$
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#
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# This is the US/English general help file for Open MPI.
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#
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[btl_mvapi:retry-exceeded]
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The retry count is a down counter initialized on creation of the QP. Retry
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count is defined in the InfiniBand Spec 1.2 (12.7.38):
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The total number of times that the sender wishes the receiver to retry tim-
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eout, packet sequence, etc. errors before posting a completion error.
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Note that two mca parameters are involved here:
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btl_mvapi_ib_retry_count - The number of times the sender will attempt to
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retry (defaulted to 7, the maximum value).
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btl_mvapi_ib_timeout - The local ack timeout parameter (defaulted to 10). The
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actual timeout value used is calculated as:
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(4.096 micro-seconds * 2^btl_mvapi_ib_timeout).
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See InfiniBand Spec 1.2 (12.7.34) for more details.
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What to do next:
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One item to note is the hosts on which this error has occured, it has been
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observed that rebooting or removing a particular host from the job can resolve
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this issue. Should you be able to identify a specific cause or additional
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trouble shooting information please report this to devel@open-mpi.org.
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