View of /tags/1.0/src/utils/utilities.upc

/*****************************************************************************/
/*                                                                           */
/*  Copyright (c) 2008, 2009, 2010                                           */
/*                         Computer Architecture Group (CAG)                 */
/*                         University of A Coruña, Spain                     */
/*                         (http://gac.des.udc.es)                           */
/*                         Galicia Supercomputing Center (CESGA)             */
/*                         (http://www.cesga.es)                             */
/*                         Hewlett-Packard Spain (HP)                        */
/*                         (http://www.hp.es)                                */
/*                                                                           */
/*  This file is part of UPC Operations Microbenchmarking Suite (UOMS).      */
/*                                                                           */
/*  UOMS 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 3 of the License, or     */
/*  (at your option) any later version.                                      */
/*                                                                           */
/*  UOMS 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 for more details.                      */
/*                                                                           */
/*  You should have received a copy of the GNU Lesser General Public License */
/*  along with UOMS.  If not, see <http://www.gnu.org/licenses/>.            */
/*                                                                           */
/*****************************************************************************/

/*****************************************************************************/
/*                                                                           */
/*    FUNDING: This development has been funded by Hewlett-Packard Spain     */
/*                                                                           */      
/*    Project Name:                                                          */
/*     UPCHACO (2008-2011)                                                   */
/*    Subproject:                                                            */
/*     Improving UPC Usability and  Performance in Constellation Systems:    */
/*     Implementation/Extensions of UPC Libraries.                           */
/*     (UPCPU­Project -> UPC Performance and Usability Project)               */
/*                                                                           */
/*****************************************************************************/

/*****************************************************************************

  For further documentation, see

  [1] Files under doc/

******************************************************************************/

#include "../defines.h"

extern int cache_invalidation;

/*********************************************
  Utility functions (niters...)
 **********************************************/

int niters(int msize)
{
	/*
	 * With cache invalidation the number of buckets will be equal to the number
	 * of iterations, resulting in excesive memory consumption. To avoid that
	 * the number of iterations will be less than without cache invalidation.
	 */

	int iters = 0;
	int factor = 1;

	if(cache_invalidation == 1){
		if (msize <= 16*1024) iters=100;
		else if (msize <= 512*1024) iters=50;
		else if (msize <= 4*1024*1024) iters=25;
		else if (msize <= 16*1024*1024) iters=10;
		else iters=5;
	}
	else{
		if (msize <= 16*1024) iters=1000;
		else if (msize <= 512*1024) iters=500;
		else if (msize <= 4*1024*1024) iters=250;
		else if (msize <= 16*1024*1024) iters=100;
		else iters=50;
	}

	if(THREADS<16){
		factor=1;
	}
	else if(THREADS<64){
		factor=2;
	}
	else if(THREADS<256){
		factor=3;
	}
	else if(THREADS<1024){
		factor=4;
	}
	else{
		factor=5;
	}

	if(iters/factor < 1)
		return 1;
	else
		return iters/factor;

}

/*
	Sets the header type
*/
int operation_header(int operation_code){

	int headertype=0;

	switch (operation_code) {
		case BROADCAST:
		case SCATTER: 
		case GATHER: 		
		case GATHERALL:
		case EXCHANGE:
		case PERMUTE:
		case MEMGET:
		case MEMPUT:
		case MEMCPY:
		case LMEMGET:
		case LMEMPUT:
		case LMEMCPY:
		#ifdef ASYNC_MEM_TEST
		case AMEMGET:
		case AMEMPUT:
		case AMEMCPY:
		case ALMEMGET:
		case ALMEMPUT:
		case ALMEMCPY:
		#endif
		#ifdef ASYNCI_MEM_TEST
		case AIMEMGET:
		case AIMEMPUT:
		case AIMEMCPY:
		case AILMEMGET:
		case AILMEMPUT:
		case AILMEMCPY:
		#endif
		case SMEMCPY:
		case MEMMOVE:
		headertype=3;
		break; 
		case BARRIER:
		headertype=1;
		break; 
		default:
		headertype=2;
		break;
	}
	return headertype;
}