552c9ca5a0
WHAT: Open our low-level communication infrastructure by moving all necessary components (btl/rcache/allocator/mpool) down in OPAL All the components required for inter-process communications are currently deeply integrated in the OMPI layer. Several groups/institutions have express interest in having a more generic communication infrastructure, without all the OMPI layer dependencies. This communication layer should be made available at a different software level, available to all layers in the Open MPI software stack. As an example, our ORTE layer could replace the current OOB and instead use the BTL directly, gaining access to more reactive network interfaces than TCP. Similarly, external software libraries could take advantage of our highly optimized AM (active message) communication layer for their own purpose. UTK with support from Sandia, developped a version of Open MPI where the entire communication infrastucture has been moved down to OPAL (btl/rcache/allocator/mpool). Most of the moved components have been updated to match the new schema, with few exceptions (mainly BTLs where I have no way of compiling/testing them). Thus, the completion of this RFC is tied to being able to completing this move for all BTLs. For this we need help from the rest of the Open MPI community, especially those supporting some of the BTLs. A non-exhaustive list of BTLs that qualify here is: mx, portals4, scif, udapl, ugni, usnic. This commit was SVN r32317.
67 строки
1.6 KiB
Plaintext
67 строки
1.6 KiB
Plaintext
# -*- text -*-
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#
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# Copyright (c) 2009-2014 Cisco Systems, Inc. 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 help file for Open MPI's TCP support
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# (the openib BTL).
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#
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[invalid if_inexclude]
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WARNING: An invalid value was given for btl_tcp_if_%s. This
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value will be ignored.
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Local host: %s
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Value: %s
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Message: %s
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#
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[invalid minimum port]
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WARNING: An invalid value was given for the btl_tcp_port_min_%s. Legal
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values are in the range [1 .. 2^16-1]. This value will be ignored
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(reset to the default value of 1024).
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Local host: %s
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Value: %d
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#
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[client connect fail]
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WARNING: Open MPI failed to TCP connect to a peer MPI process. This
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should not happen.
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Your Open MPI job may now fail.
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Local host: %s
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PID: %d
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Message: %s
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Error: %s (%d)
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#
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[client handshake fail]
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WARNING: Open MPI failed to handshake with a connecting peer MPI
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process over TCP. This should not happen.
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Your Open MPI job may now fail.
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Local host: %s
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PID: %d
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Message: %s
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#
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[accept failed]
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WARNING: The accept(3) system call failed on a TCP socket. While this
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should generally never happen on a well-configured HPC system, the
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most common causes when it does occur are:
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* The process ran out of file descriptors
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* The operating system ran out of file descriptors
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* The operating system ran out of memory
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Your Open MPI job will likely hang until the failure resason is fixed
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(e.g., more file descriptors and/or memory becomes available), and may
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eventually timeout / abort.
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Local host: %s
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PID: %d
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Errno: %d (%s)
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#
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