starpu-max/include/starpu_perf_steering.h

/* StarPU --- Runtime system for heterogeneous multicore architectures.
 *
 * Copyright (C) 2019                                     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.
 *
 * 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 __STARPU_PERF_STEERING_H__
#define __STARPU_PERF_STEERING_H__

#include <starpu.h>

#ifdef __cplusplus
extern "C"
{
#endif

/**
   @defgroup API_Perf_Steering Performance Steering Knobs
   @brief This section describes the interface to access performance steering counters.
   @{
*/

/**
   @name API
   \anchor PM_API
   @{
*/
/**
   Enum of all possible performance knob scopes.
 */
enum starpu_perf_knob_scope
{
	starpu_perf_knob_scope_undefined     = 0, /** undefined scope */
	starpu_perf_knob_scope_global        = 1, /** global scope */
	starpu_perf_knob_scope_per_worker    = 3, /** per-worker scope */
	starpu_perf_knob_scope_per_scheduler = 5  /** per-scheduler scope */
};

/**
  Enum of all possible performance knob value type.
 */
enum starpu_perf_knob_type
{
	starpu_perf_knob_type_undefined = 0, /** underfined value type */
	starpu_perf_knob_type_int32     = 1, /** signed 32-bit integer value */
	starpu_perf_knob_type_int64     = 2, /** signed 64-bit integer value */
	starpu_perf_knob_type_float     = 3, /** 32-bit single precision floating-point value */
	starpu_perf_knob_type_double    = 4  /** 64-bit double precision floating-point value */
};

/**
  Translate scope name constant string to scope id.
  */
int starpu_perf_knob_scope_name_to_id(const char *name);
/**
  Translate scope id to scope name constant string.
  */
const char *starpu_perf_knob_scope_id_to_name(enum starpu_perf_knob_scope scope);

/**
  Translate type name constant string to type id.
  */
int starpu_perf_knob_type_name_to_id(const char *name);
/**
  Translate type id to type name constant string.
  */
const char *starpu_perf_knob_type_id_to_name(enum starpu_perf_knob_type type);

/**
  Return the number of performance steering knobs for the given scope.
  */
int starpu_perf_knob_nb(enum starpu_perf_knob_scope scope);
/**
  Translate a performance knob name to its id.
  */
int starpu_perf_knob_name_to_id(enum starpu_perf_knob_scope scope, const char *name);
/**
  Translate a performance knob name to its id.
  */
int starpu_perf_knob_nth_to_id(enum starpu_perf_knob_scope scope, int nth);
/**
  Translate a performance knob rank in its scope to its knob id.
  */
const char *starpu_perf_knob_id_to_name(int id);
/**
  Translate a knob id to its name constant string.
  */
int starpu_perf_knob_get_type_id(int id);
/**
  Return the knob's help string.
  */
const char *starpu_perf_knob_get_help_string(int id);

/**
  Display the list of knobs defined in the given scope.
  */
void starpu_perf_knob_list_avail(enum starpu_perf_knob_scope scope);
/**
  Display the list of knobs defined in all scopes.
  */
void starpu_perf_knob_list_all_avail(void);

/**
  Get knob value for Global scope.
  */
int32_t starpu_perf_knob_get_global_int32_value (const int knob_id);
/**
  Get knob value for Global scope.
  */
int64_t starpu_perf_knob_get_global_int64_value (const int knob_id);
/**
  Get knob value for Global scope.
  */
float   starpu_perf_knob_get_global_float_value (const int knob_id);
/**
  Get knob value for Global scope.
  */
double  starpu_perf_knob_get_global_double_value(const int knob_id);

/**
  Set int32 knob value for Global scope.
  */
void starpu_perf_knob_set_global_int32_value (const int knob_id, int32_t new_value);
/**
  Set int64 knob value for Global scope.
  */
void starpu_perf_knob_set_global_int64_value (const int knob_id, int64_t new_value);
/**
  Set float knob value for Global scope.
  */
void starpu_perf_knob_set_global_float_value (const int knob_id, float   new_value);
/**
  Set double knob value for Global scope.
  */
void starpu_perf_knob_set_global_double_value(const int knob_id, double  new_value);


/**
 Get int32 value for Per_worker scope.
  */
int32_t starpu_perf_knob_get_per_worker_int32_value (const int knob_id, unsigned workerid);
/**
 Get int64 value for Per_worker scope.
  */
int64_t starpu_perf_knob_get_per_worker_int64_value (const int knob_id, unsigned workerid);
/**
 Get float value for Per_worker scope.
  */
float   starpu_perf_knob_get_per_worker_float_value (const int knob_id, unsigned workerid);
/**
 Get double value for Per_worker scope.
  */
double  starpu_perf_knob_get_per_worker_double_value(const int knob_id, unsigned workerid);

/**
 Set int32 value for Per_worker scope.
  */
void starpu_perf_knob_set_per_worker_int32_value (const int knob_id, unsigned workerid, int32_t new_value);
/**
 Set int64 value for Per_worker scope.
  */
void starpu_perf_knob_set_per_worker_int64_value (const int knob_id, unsigned workerid, int64_t new_value);
/**
 Set float value for Per_worker scope.
  */
void starpu_perf_knob_set_per_worker_float_value (const int knob_id, unsigned workerid, float   new_value);
/**
 Set double value for Per_worker scope.
  */
void starpu_perf_knob_set_per_worker_double_value(const int knob_id, unsigned workerid, double  new_value);


/**
 Get int32 value for per_scheduler scope.
  */
int32_t starpu_perf_knob_get_per_scheduler_int32_value (const int knob_id, const char * sched_policy_name);
/**
 Get int64 value for per_scheduler scope.
  */
int64_t starpu_perf_knob_get_per_scheduler_int64_value (const int knob_id, const char * sched_policy_name);
/**
 Get float value for per_scheduler scope.
  */
float   starpu_perf_knob_get_per_scheduler_float_value (const int knob_id, const char * sched_policy_name);
/**
 Get double value for per_scheduler scope.
  */
double  starpu_perf_knob_get_per_scheduler_double_value(const int knob_id, const char * sched_policy_name);

/**
 Set int32 value for per_scheduler scope.
  */
void starpu_perf_knob_set_per_scheduler_int32_value (const int knob_id, const char * sched_policy_name, int32_t new_value);
/**
 Set int64 value for per_scheduler scope.
  */
void starpu_perf_knob_set_per_scheduler_int64_value (const int knob_id, const char * sched_policy_name, int64_t new_value);
/**
 Set float value for per_scheduler scope.
  */
void starpu_perf_knob_set_per_scheduler_float_value (const int knob_id, const char * sched_policy_name, float   new_value);
/**
 Set double value for per_scheduler scope.
  */
void starpu_perf_knob_set_per_scheduler_double_value(const int knob_id, const char * sched_policy_name, double  new_value);

/** @} */

/** @} */

#ifdef __cplusplus
}
#endif

#endif /* __STARPU_PERF_STEERING_H__ */