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Scali MPI Connect Release 4.4 Users Guide 39

-t <call-list> Enable for MPI_calls in <call-list>.

MPI_call = 'MPI_call' | 'call'

-x <call-list> Disable for MPI_calls in <call-list>.

MPI_call = 'MPI_call' | 'call'

-f <format-list> Define format: 'timing', 'arguments', 'rate'

-v Verbose

-h Print this list of options

By default only one line is written per MPI-call.

Calls may be specified with or without the "MPI_"-prefix, and in upper- or lower-case. The

default format of the output has the following parts:

<absRank>: <MPIcall><commName>_<rank><call-dependant-parameters> where

<absRank> is the rank within MPI_COMM_WORLD

<MPIcall> is the name of the MPI-call

<commName> is the name of the communicator

<rank> is the rank within the communicator used

This format can be extended by using the "-f"-option. Adding "-f arguments" will provide

some additional information concerning message length. If "-f timing" is given some timing

information between the <absRank>and <MPIcall>-fields is provided.

The extra field has the following format:

+<relSecs> S <eTime>

where

<relSecs> is the elapsed time in seconds since returning to the application

from MPI_Init

<eTime> is the elapsed execution time for the current call

"-f rate" will add some rate-related information. The rate is calculated by dividing the number

of bytes transferred by the elapsed time to execute the call. All parameters to -f can be

abbreviated and can occur in any mix.

Normally no error messages are provided concerning the options which have been selected.

But if -verbose is added as a command-line option to mpimon, errors will be printed.

Trace provides information about which MPI routines were called and possibly information

about parameters and timing.

Example using the test application:

%SCAMPI_TRACE="-p all" mpimon ./kollektive-8 ./uf256-8.pgm -- r1 r2

Prints a trace of all MPI calls for this run that is relatively simple:

0: MPI_Init

0: MPI_Comm_rank Rank: 0

0: MPI_Comm_size Size: 2

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 80 81

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Escali , LLC Network Router 4.4 Manual de usuario Pagina 51