StarPU Internal Handbook
perfmodel.h
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1 /* StarPU --- Runtime system for heterogeneous multicore architectures.
2  *
3  * Copyright (C) 2008-2022 Université de Bordeaux, CNRS (LaBRI UMR 5800), Inria
4  * Copyright (C) 2011 Télécom-SudParis
5  * Copyright (C) 2013 Thibaut Lambert
6  *
7  * StarPU is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU Lesser General Public License as published by
9  * the Free Software Foundation; either version 2.1 of the License, or (at
10  * your option) any later version.
11  *
12  * StarPU is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15  *
16  * See the GNU Lesser General Public License in COPYING.LGPL for more details.
17  */
18 
19 #ifndef __PERFMODEL_H__
20 #define __PERFMODEL_H__
21 
24 #include <common/config.h>
25 #include <starpu.h>
26 #include <core/task_bundle.h>
27 #include <stdio.h>
28 
29 #pragma GCC visibility push(hidden)
30 
31 #ifdef __cplusplus
32 extern "C"
33 {
34 #endif
35 
36 void _starpu_init_perfmodel(void);
37 
47 #define _STARPU_PERFMODEL_VERSION 45
48 #define PATH_LENGTH 256
49 #define STR_SHORT_LENGTH 32
50 #define STR_LONG_LENGTH 256
51 #define STR_VERY_LONG_LENGTH 1024
52 
54 {
55  struct starpu_perfmodel_per_arch** per_arch; /*STARPU_MAXIMPLEMENTATIONS*/
56  int** per_arch_is_set; /*STARPU_MAXIMPLEMENTATIONS*/
57 
58  starpu_pthread_rwlock_t model_rwlock;
59  int *nimpls;
60  int *nimpls_set;
62  int ncombs;
65  int *combs;
66 };
67 
68 struct starpu_data_descr;
69 struct _starpu_job;
70 struct starpu_perfmodel_arch;
71 
72 extern unsigned _starpu_calibration_minimum;
73 
74 void _starpu_find_perf_model_codelet(const char *symbol, const char *hostname, char *path, size_t maxlen);
75 void _starpu_find_perf_model_codelet_debug(const char *symbol, const char *hostname, const char *arch, char *path, size_t maxlen);
76 void _starpu_set_default_perf_model_codelet(const char *symbol, const char *hostname, char *path, size_t maxlen);
77 
78 char *_starpu_get_perf_model_dir_default();
79 char **_starpu_get_perf_model_dirs_codelet() STARPU_ATTRIBUTE_VISIBILITY_DEFAULT;
80 char *_starpu_get_perf_model_dir_bus();
81 
82 double _starpu_history_based_job_expected_perf(struct starpu_perfmodel *model, struct starpu_perfmodel_arch* arch, struct _starpu_job *j, unsigned nimpl);
83 void _starpu_load_history_based_model(struct starpu_perfmodel *model, unsigned scan_history);
84 void _starpu_init_and_load_perfmodel(struct starpu_perfmodel *model);
85 void _starpu_initialize_registered_performance_models(void);
86 void _starpu_deinitialize_registered_performance_models(void);
87 void _starpu_deinitialize_performance_model(struct starpu_perfmodel *model);
88 
89 double _starpu_regression_based_job_expected_perf(struct starpu_perfmodel *model, struct starpu_perfmodel_arch* arch, struct _starpu_job *j, unsigned nimpl);
90 double _starpu_non_linear_regression_based_job_expected_perf(struct starpu_perfmodel *model, struct starpu_perfmodel_arch* arch, struct _starpu_job *j, unsigned nimpl);
91 double _starpu_multiple_regression_based_job_expected_perf(struct starpu_perfmodel *model, struct starpu_perfmodel_arch* arch, struct _starpu_job *j, unsigned nimpl);
92 void _starpu_update_perfmodel_history(struct _starpu_job *j, struct starpu_perfmodel *model, struct starpu_perfmodel_arch * arch, unsigned cpuid, double measured, unsigned nimpl, unsigned number);
93 int _starpu_perfmodel_create_comb_if_needed(struct starpu_perfmodel_arch* arch);
94 
95 int _starpu_create_bus_sampling_directory_if_needed(int location);
96 void _starpu_create_codelet_sampling_directory_if_needed(int location);
97 
98 void _starpu_load_bus_performance_files(void);
99 
100 int _starpu_get_perf_model_bus();
101 int _starpu_set_default_perf_model_bus();
102 
103 void _starpu_set_calibrate_flag(unsigned val);
104 unsigned _starpu_get_calibrate_flag(void);
105 
106 #if defined(STARPU_USE_CUDA)
107 unsigned *_starpu_get_cuda_affinity_vector(unsigned gpuid);
108 #endif
109 #if defined(STARPU_USE_OPENCL)
110 unsigned *_starpu_get_opencl_affinity_vector(unsigned gpuid);
111 #endif
112 
113 void _starpu_save_bandwidth_and_latency_disk(double bandwidth_write, double bandwidth_read, double latency_write, double latency_read, unsigned node, const char *name);
114 
115 void _starpu_write_double(FILE *f, const char *format, double val) STARPU_ATTRIBUTE_VISIBILITY_DEFAULT;
116 int _starpu_read_double(FILE *f, char *format, double *val) STARPU_ATTRIBUTE_VISIBILITY_DEFAULT;
117 void _starpu_simgrid_get_platform_path(int version, char *path, size_t maxlen);
118 
119 void _starpu_perfmodel_realloc(struct starpu_perfmodel *model, int nb);
120 
121 void _starpu_free_arch_combs(void);
122 
123 #if defined(STARPU_HAVE_HWLOC)
124 hwloc_topology_t _starpu_perfmodel_get_hwtopology();
125 #endif
126 
127 #ifdef __cplusplus
128 }
129 #endif
130 
131 #pragma GCC visibility pop
132 
133 #endif // __PERFMODEL_H__
#define struct
Definition: list.h:175
int ncombs_set
Definition: perfmodel.h:64
int ncombs
Definition: perfmodel.h:62
Definition: perfmodel.h:54
Definition: jobs.h:74