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MPI: added comments for use of eo::mpi::Channel::Messages.

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This commit is contained in:
Benjamin Bouvier 2012-08-06 15:28:10 +02:00
commit c50eadc891
1 changed files with 5 additions and 1 deletions
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6
eo/src/mpi/eoMpi.h
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@ -314,6 +314,9 @@ namespace eo
* This is a functor implementing void operator()(int), and also a shared data function, containing wrapper on * This is a functor implementing void operator()(int), and also a shared data function, containing wrapper on
* its own type. * its own type.
* *
* The master has to receive worker's data on channel (= MPI tag) eo::mpi::Channel::Messages. No other tags are
* allowed.
*
* @ingroup MPI * @ingroup MPI
*/ */
template< typename JobData > template< typename JobData >
@ -335,7 +338,8 @@ namespace eo
* This is where the real computation happen. * This is where the real computation happen.
* Whenever the master sends the command "Continue" to workers, which indicates the worker will receive a task, * Whenever the master sends the command "Continue" to workers, which indicates the worker will receive a task,
* the worker calls this functor. The user has to explicitly retrieve the data, handle it and transmit it, * the worker calls this functor. The user has to explicitly retrieve the data, handle it and transmit it,
* processed, back to the master. If the worker does not send any data back to the master, the latter will * processed, back to the master. Data sent back needs to be transmitted via channel (= MPI tag)
* eo::mpi::Channel::Messages, and no one else. If the worker does not send any data back to the master, the latter will
* consider the worker isn't done and a deadlock could occur. * consider the worker isn't done and a deadlock could occur.
* *
* This is a functor implementing void operator()(), and also a shared data function, containing wrapper on its * This is a functor implementing void operator()(), and also a shared data function, containing wrapper on its