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Introduce smpi::Process
[simgrid.git] / src / smpi / colls / smpi_automatic_selector.cpp
1 /* Copyright (c) 2013-2015. The SimGrid Team.
2  * All rights reserved.                                                     */
3
4 /* This program is free software; you can redistribute it and/or modify it
5  * under the terms of the license (GNU LGPL) which comes with this package. */
6
7 #include <float.h>
8
9 #include <exception>
10
11 #include "colls_private.h"
12
13 //attempt to do a quick autotuning version of the collective,
14
15 #define TRACE_AUTO_COLL(cat) if (TRACE_is_enabled()){\
16         type_t type = PJ_type_get_or_null (#cat, PJ_type_get_root());\
17          if (!type){\
18              type=PJ_type_event_new(#cat, PJ_type_get_root());\
19          }\
20          char cont_name[25];\
21          snprintf(cont_name,25, "rank-%d", smpi_process()->index());\
22          val_t value = PJ_value_get_or_new(Colls::mpi_coll_##cat##_description[i].name,"1.0 1.0 1.0", type);\
23          new_pajeNewEvent (SIMIX_get_clock(), PJ_container_get(cont_name), type, value);\
24       }
25
26 #define AUTOMATIC_COLL_BENCH(cat, ret, args, args2)\
27     ret Coll_ ## cat ## _automatic:: cat (COLL_UNPAREN args)\
28 {\
29   double time1, time2, time_min=DBL_MAX;\
30   int min_coll=-1, global_coll=-1;\
31   int i;\
32   double buf_in, buf_out, max_min=DBL_MAX;\
33   for (i = 0; Colls::mpi_coll_##cat##_description[i].name; i++){\
34       if(!strcmp(Colls::mpi_coll_##cat##_description[i].name, "automatic"))continue;\
35       if(!strcmp(Colls::mpi_coll_##cat##_description[i].name, "default"))continue;\
36       Coll_barrier_default::barrier(comm);\
37       TRACE_AUTO_COLL(cat)\
38       time1 = SIMIX_get_clock();\
39       try {\
40       ((int (*) args)\
41           Colls::mpi_coll_##cat##_description[i].coll) args2 ;\
42       }\
43       catch (std::exception& ex) {\
44         continue;\
45       }\
46       time2 = SIMIX_get_clock();\
47       buf_out=time2-time1;\
48       Coll_reduce_default::reduce((void*)&buf_out,(void*)&buf_in, 1, MPI_DOUBLE, MPI_MAX, 0,comm );\
49       if(time2-time1<time_min){\
50           min_coll=i;\
51           time_min=time2-time1;\
52       }\
53       if(comm->rank()==0){\
54           if(buf_in<max_min){\
55               max_min=buf_in;\
56               global_coll=i;\
57           }\
58       }\
59   }\
60   if(comm->rank()==0){\
61       XBT_WARN("For rank 0, the quickest was %s : %f , but global was %s : %f at max",Colls::mpi_coll_##cat##_description[min_coll].name, time_min,Colls::mpi_coll_##cat##_description[global_coll].name, max_min);\
62   }else\
63   XBT_WARN("The quickest %s was %s on rank %d and took %f",#cat,Colls::mpi_coll_##cat##_description[min_coll].name, comm->rank(), time_min);\
64   return (min_coll!=-1)?MPI_SUCCESS:MPI_ERR_INTERN;\
65 }
66
67 namespace simgrid{
68 namespace smpi{
69
70 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_ALLGATHERV_SIG, (send_buff, send_count, send_type, recv_buff, recv_count, recv_disps, recv_type, comm));
71 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_ALLREDUCE_SIG, (sbuf, rbuf, rcount, dtype, op, comm));
72 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_GATHER_SIG, (send_buff, send_count, send_type, recv_buff, recv_count, recv_type, root, comm));
73 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_ALLGATHER_SIG, (send_buff,send_count,send_type,recv_buff,recv_count,recv_type,comm));
74 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_ALLTOALL_SIG,(send_buff, send_count, send_type, recv_buff, recv_count, recv_type,comm));
75 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_ALLTOALLV_SIG, (send_buff, send_counts, send_disps, send_type, recv_buff, recv_counts, recv_disps, recv_type, comm));
76 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_BCAST_SIG , (buf, count, datatype, root, comm));
77 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_REDUCE_SIG,(buf,rbuf, count, datatype, op, root, comm));
78 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_REDUCE_SCATTER_SIG ,(sbuf,rbuf, rcounts,dtype,op,comm));
79 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_SCATTER_SIG ,(sendbuf, sendcount, sendtype,recvbuf, recvcount, recvtype,root, comm));
80 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_BARRIER_SIG,(comm));
81
82 }
83 }