starpu-max/doc/doxygen/chapters/api/task_bundles.doxy

/* StarPU --- Runtime system for heterogeneous multicore architectures.
 *
 * Copyright (C) 2010-2013,2015,2017                      CNRS
 * Copyright (C) 2009-2011,2014,2016                      Université de Bordeaux
 * Copyright (C) 2011-2012                                Inria
 *
 * StarPU is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or (at
 * your option) any later version.
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 * StarPU is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
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 * See the GNU Lesser General Public License in COPYING.LGPL for more details.
 */

/*! \defgroup API_Task_Bundles Task Bundles

\typedef starpu_task_bundle_t
\ingroup API_Task_Bundles
Opaque structure describing a list of tasks that should be scheduled
on the same worker whenever it’s possible. It must be considered as a
hint given to the scheduler as there is no guarantee that they will be
executed on the same worker.

\fn void starpu_task_bundle_create(starpu_task_bundle_t *bundle)
\ingroup API_Task_Bundles
Factory function creating and initializing \p bundle, when the call
returns, memory needed is allocated and \p bundle is ready to use.

\fn int starpu_task_bundle_insert(starpu_task_bundle_t bundle, struct starpu_task *task)
\ingroup API_Task_Bundles
Insert \p task in \p bundle. Until \p task is removed from \p bundle
its expected length and data transfer time will be considered along
those of the other tasks of bundle. This function must not be called
if \p bundle is already closed and/or \p task is already submitted.
On success, it returns 0. There are two cases of error : if \p bundle
is already closed it returns <c>-EPERM</c>, if \p task was already
submitted it returns <c>-EINVAL</c>.

\fn int starpu_task_bundle_remove(starpu_task_bundle_t bundle, struct starpu_task *task)
\ingroup API_Task_Bundles
Remove \p task from \p bundle. Of course \p task must have been
previously inserted in \p bundle. This function must not be called if
\p bundle is already closed and/or \p task is already submitted. Doing
so would result in undefined behaviour. On success, it returns 0. If
\p bundle is already closed it returns <c>-ENOENT</c>.

\fn void starpu_task_bundle_close(starpu_task_bundle_t bundle)
\ingroup API_Task_Bundles
Inform the runtime that the user will not modify \p bundle anymore, it
means no more inserting or removing task. Thus the runtime can destroy
it when possible.

\fn double starpu_task_bundle_expected_length(starpu_task_bundle_t bundle, struct starpu_perfmodel_arch *arch, unsigned nimpl)
\ingroup API_Task_Bundles
Return the expected duration of \p bundle in micro-seconds.

\fn double starpu_task_bundle_expected_energy(starpu_task_bundle_t bundle, struct starpu_perfmodel_arch *arch, unsigned nimpl)
\ingroup API_Task_Bundles
Return the expected energy consumption of \p bundle in J.

\fn double starpu_task_bundle_expected_data_transfer_time(starpu_task_bundle_t bundle, unsigned memory_node)
\ingroup API_Task_Bundles
Return the time (in micro-seconds) expected to transfer all data used within \p bundle.

*/