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//------------------------------------------------------------------------------
// LAGraph/experimental/benchmark/AllKCore_demo.c: benchmark for kcore (single k-core)
//------------------------------------------------------------------------------
// LAGraph, (c) 2019-2022 by The LAGraph Contributors, All Rights Reserved.
// SPDX-License-Identifier: BSD-2-Clause
//
// For additional details (including references to third party source code and
// other files) see the LICENSE file or contact permission@sei.cmu.edu. See
// Contributors.txt for a full list of contributors. Created, in part, with
// funding and support from the U.S. Government (see Acknowledgments.txt file).
// DM22-0790
// Contributed by Pranav Konduri, Texas A&M University
//------------------------------------------------------------------------------
#include "../../src/benchmark/LAGraph_demo.h"
#include "LAGraphX.h"
// #define NTHREAD_LIST 2
#define NTHREAD_LIST 1
#define THREAD_LIST 0
// #define NTHREAD_LIST 6
// #define THREAD_LIST 64, 32, 24, 12, 8, 4
// #define NTHREAD_LIST 7
// #define THREAD_LIST 40, 20, 16, 8, 4, 2, 1
#define LG_FREE_ALL \
{ \
LAGraph_Delete (&G, NULL) ; \
GrB_free (&A) ; \
GrB_free (&D) ; \
GrB_free (&c) ; \
}
int main (int argc, char **argv)
{
//--------------------------------------------------------------------------
// initialize LAGraph and GraphBLAS
//--------------------------------------------------------------------------
char msg [LAGRAPH_MSG_LEN] ;
GrB_Vector c = NULL ;
GrB_Matrix A = NULL ;
GrB_Matrix D = NULL ;
LAGraph_Graph G = NULL ;
uint64_t kmax;
// start GraphBLAS and LAGraph
bool burble = false ;
demo_init (burble) ;
int ntrials = 1 ; //todo: change to higher # later
printf ("# of trials: %d\n", ntrials) ;
int nt = NTHREAD_LIST ;
int Nthreads [20] = { 0, THREAD_LIST } ;
int nthreads_min ;
int nthreads_max ;
LAGRAPH_TRY (LAGraph_GetNumThreads (&nthreads_max, &nthreads_min, NULL)) ;
if (Nthreads [1] == 0)
{
// create thread list automatically
Nthreads [1] = nthreads_max ;
for (int t = 2 ; t <= nt ; t++)
{
Nthreads [t] = Nthreads [t-1] / 2 ;
if (Nthreads [t] == 0) nt = t-1 ;
}
}
printf ("threads to test: ") ;
for (int t = 1 ; t <= nt ; t++)
{
int nthreads = Nthreads [t] ;
if (nthreads > nthreads_max) continue ;
printf (" %d", nthreads) ;
}
printf ("\n") ;
//--------------------------------------------------------------------------
// read in the graph
//--------------------------------------------------------------------------
char *matrix_name = (argc > 1) ? argv [1] : "stdin" ;
LAGRAPH_TRY (readproblem (&G, NULL,
true, true, true, NULL, false, argc, argv)) ;
GrB_Index n, nvals ;
GRB_TRY (GrB_Matrix_nrows (&n, G->A)) ;
GRB_TRY (GrB_Matrix_nvals (&nvals, G->A)) ;
// LAGRAPH_TRY (LAGraph_Graph_Print (G, LAGraph_SHORT, stdout, msg)) ;
GRB_TRY (GrB_Matrix_new (&A, GrB_INT64, n, n)) ;
GRB_TRY (GrB_assign (A, G->A, NULL, (double) 1,
GrB_ALL, n, GrB_ALL, n, GrB_DESC_S)) ;
GrB_free (&(G->A)) ;
G->A = A ;
GRB_TRY (GrB_Matrix_new (&D, GrB_INT64, n, n)) ;
//--------------------------------------------------------------------------
// kcore testing
//--------------------------------------------------------------------------
// warmup for more accurate timing
LAGRAPH_TRY (LAGraph_SetNumThreads (24, 24, msg)) ;
double tt = LAGraph_WallClockTime ( ) ;
LAGRAPH_TRY (LAGraph_KCore_All (&c, &kmax, G, msg)) ;
tt = LAGraph_WallClockTime ( ) - tt ;
printf("warmup time: %g sec\n\n", tt) ;
//LAGRAPH_TRY (LAGraph_KCore_Decompose (&D, G, &c, kmax, msg)) ;
GRB_TRY (GrB_free (&c)) ;
//GRB_TRY (GrB_free (&D)) ;
for (int t = 1 ; t <= nt ; t++)
{
int nthreads = Nthreads [t] ;
if (nthreads > nthreads_max) continue ;
LAGRAPH_TRY (LAGraph_SetNumThreads (nthreads, nthreads, msg)) ;
double ttot = 0, ttrial [100] ;
for (int trial = 0 ; trial < ntrials ; trial++)
{
double tt = LAGraph_WallClockTime ( ) ;
LAGRAPH_TRY (LAGraph_KCore_All (&c, &kmax, G, msg)) ;
GRB_TRY (GrB_free (&c)) ;
ttrial [trial] = LAGraph_WallClockTime ( ) - tt ;
ttot += ttrial [trial] ;
printf ("threads %2d trial %2d: %12.6f sec\n",
nthreads, trial, ttrial [trial]) ;
}
ttot = ttot / ntrials ;
printf ("Avg: "
"nthreads: %3d time: %12.6f matrix: %s\n",
nthreads, ttot, matrix_name) ;
}
LG_FREE_ALL ;
LAGRAPH_TRY (LAGraph_Finalize (msg)) ;
return (GrB_SUCCESS) ;
}
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