/* StarPU --- Runtime system for heterogeneous multicore architectures. * * Copyright (C) 2009-2013 Université de Bordeaux 1 * Copyright (C) 2010, 2011, 2013 Centre National de la Recherche Scientifique * Copyright (C) 2011 Télécom-SudParis * * 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. * * StarPU is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * See the GNU Lesser General Public License in COPYING.LGPL for more details. */ #ifndef __JOBS_H__ #define __JOBS_H__ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef STARPU_USE_CUDA #include #endif struct _starpu_worker; /* codelet function */ typedef void (*_starpu_cl_func_t)(void **, void *); #define _STARPU_CPU_MAY_PERFORM(j) ((j)->task->cl->where & STARPU_CPU) #define _STARPU_CUDA_MAY_PERFORM(j) ((j)->task->cl->where & STARPU_CUDA) #define _STARPU_OPENCL_MAY_PERFORM(j) ((j)->task->cl->where & STARPU_OPENCL) #define _STARPU_MIC_MAY_PERFORM(j) ((j)->task->cl->where & STARPU_MIC) #define _STARPU_SCC_MAY_PERFORM(j) ((j)->task->cl->where & STARPU_SCC) /* A job is the internal representation of a task. */ LIST_TYPE(_starpu_job, /* The implementation associated to the job */ unsigned nimpl; /* The task associated to that job */ struct starpu_task *task; /* These synchronization structures are used to wait for the job to be * available or terminated for instance. */ starpu_pthread_mutex_t sync_mutex; starpu_pthread_cond_t sync_cond; /* To avoid deadlocks, we reorder the different buffers accessed to by * the task so that we always grab the rw-lock associated to the * handles in the same order. */ struct starpu_data_descr ordered_buffers[STARPU_NMAXBUFS]; struct starpu_data_descr *dyn_ordered_buffers; /* If a tag is associated to the job, this points to the internal data * structure that describes the tag status. */ struct _starpu_tag *tag; /* Maintain a list of all the completion groups that depend on the job. * */ struct _starpu_cg_list job_successors; /* For tasks with cl==NULL but submitted with explicit data dependency, * the handle for this dependency, so as to remove the task from the * last_writer/readers */ starpu_data_handle_t implicit_dep_handle; /* The value of the footprint that identifies the job may be stored in * this structure. */ unsigned footprint_is_computed; uint32_t footprint; /* Indicates whether the task associated to that job has already been * submitted to StarPU (1) or not (0) (using starpu_task_submit). * Becomes and stays 2 when the task is submitted several times. */ unsigned submitted; /* Indicates whether the task associated to this job is terminated or * not. */ unsigned terminated; /* Should that task appear in the debug tools ? (eg. the DAG generated * with dot) */ unsigned exclude_from_dag; /* Is that task internal to StarPU ? */ unsigned internal; /* Each job is attributed a unique id. */ unsigned long job_id; /* During the reduction of a handle, StarPU may have to submit tasks to * perform the reduction itself: those task should not be stalled while * other tasks are blocked until the handle has been properly reduced, * so we need a flag to differentiate them from "normal" tasks. */ unsigned reduction_task; /* Used by MIC driver to record codelet start time instead of using a * local variable */ struct timespec cl_start; #ifdef STARPU_USE_FXT /* A symbol name may be associated to the job directly for debug * purposes (for instance if the codelet is NULL). */ const char *model_name; #endif struct bound_task *bound_task; /* Number of workers executing that task (>1 if the task is parallel) * */ int task_size; /* In case we have assigned this job to a combined workerid */ int combined_workerid; /* How many workers are currently running an alias of that job (for * parallel tasks only). */ int active_task_alias_count; /* Parallel workers may have to synchronize before/after the execution of a parallel task. */ _starpu_pthread_barrier_t before_work_barrier; _starpu_pthread_barrier_t after_work_barrier; ) /* Create an internal struct _starpu_job *structure to encapsulate the task. */ struct _starpu_job* __attribute__((malloc)) _starpu_job_create(struct starpu_task *task); /* Destroy the data structure associated to the job structure */ void _starpu_job_destroy(struct _starpu_job *j); /* Wait for the termination of the job */ void _starpu_wait_job(struct _starpu_job *j); /* Specify that the task should not appear in the DAG generated by debug tools. */ void _starpu_exclude_task_from_dag(struct starpu_task *task); /* try to submit job j, enqueue it if it's not schedulable yet. The job's sync mutex is supposed to be held already */ unsigned _starpu_enforce_deps_and_schedule(struct _starpu_job *j); unsigned _starpu_enforce_deps_starting_from_task(struct _starpu_job *j); /* This function must be called after the execution of a job, this triggers all * job's dependencies and perform the callback function if any. */ void _starpu_handle_job_termination(struct _starpu_job *j); /* Get the sum of the size of the data accessed by the job. */ size_t _starpu_job_get_data_size(struct starpu_perfmodel *model, enum starpu_perfmodel_archtype arch, unsigned nimpl, struct _starpu_job *j); /* Get a task from the local pool of tasks that were explicitly attributed to * that worker. */ struct starpu_task *_starpu_pop_local_task(struct _starpu_worker *worker); /* Put a task into the pool of tasks that are explicitly attributed to the * specified worker. If "back" is set, the task is put at the back of the list. * Considering the tasks are popped from the back, this value should be 0 to * enforce a FIFO ordering. */ int _starpu_push_local_task(struct _starpu_worker *worker, struct starpu_task *task, int prio); #define _STARPU_JOB_GET_ORDERED_BUFFER_HANDLE(job, i) ((job->dyn_ordered_buffers) ? job->dyn_ordered_buffers[i].handle : job->ordered_buffers[i].handle) #define _STARPU_JOB_GET_ORDERED_BUFFER_MODE(job, i) ((job->dyn_ordered_buffers) ? job->dyn_ordered_buffers[i].mode : job->ordered_buffers[i].mode) #define _STARPU_JOB_SET_ORDERED_BUFFER_HANDLE(job, handle, i) do { if (job->dyn_ordered_buffers) job->dyn_ordered_buffers[i].handle = (handle); else job->ordered_buffers[i].handle = (handle);} while(0) #define _STARPU_JOB_SET_ORDERED_BUFFER_MODE(job, mode, i) do { if (job->dyn_ordered_buffers) job->dyn_ordered_buffers[i].mode = mode; else job->ordered_buffers[i].mode = mode;} while(0) #define _STARPU_JOB_SET_ORDERED_BUFFER(job, buffer, i) do { if (job->dyn_ordered_buffers) job->dyn_ordered_buffers[i] = buffer; else job->ordered_buffers[i] = buffer;} while(0) #define _STARPU_JOB_GET_ORDERED_BUFFERS(job) (job->dyn_ordered_buffers) ? job->dyn_ordered_buffers : job->ordered_buffers #endif // __JOBS_H__