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MIC-MEMControl.c
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MIC-MEMControl.c
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//
// MIC-MEMControl.c
//
// mica
//
// Copyright (C) 2014, HKU
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
///////////////////////////////////////////////////////////////////////////////////////////////
#include "MIC-MEMControl.h"
void * MICMemLoadBlock(MICMemBlock * block, int threadId, int threadCount) {
void * micPtr = NULL;
int i;
if (block->status == MIC_MEM_STATUS_READY) {
uint8_t * hbytes = (uint8_t*) block->hostPtr;
uint64_t hsize = block->atomSize * block->atomCount;
#ifdef MIC_MEM_DEBUG_PRINT_EVENT
printf("[MIC-MEM] Offloading buffer#%s..\n",block->tag);
printf(" MIC Pointer Data Size = %llu\n",hsize);
fflush(0);
#endif
#pragma offload target(mic : threadId)
{
// Allocate memory block of the same size
micPtr = _mm_malloc(hsize, 64);
#ifdef MIC_MEM_DEBUG_PRINT_EVENT
printf(" MIC Pointer Address = %llu\n",(unsigned long long) micPtr);
fflush(0);
#endif
}
int cellSize[MIC_MEMCPY_MAX_THREAD];
if ( threadCount > MIC_MEMCPY_MAX_THREAD ) {
threadCount = MIC_MEMCPY_MAX_THREAD;
}
int evenBlockSize = hsize/threadCount;
for (i=0;i<threadCount;i++) {
cellSize[i]=evenBlockSize;
}
cellSize[threadCount-1] += hsize - evenBlockSize * threadCount;
#pragma offload target(mic : threadId) \
in(hbytes:length(hsize) alloc_if(1) free_if(1))
#pragma omp parallel for private(i) num_threads(threadCount)
for (i = 0; i < threadCount; i++) {
int skip = i * evenBlockSize;
void * t = micPtr + skip;
uint8_t * h = hbytes + skip;
memcpy(t,h,cellSize[i]);
}
#ifdef MIC_MEM_DEBUG_PRINT_EVENT
printf("DONE\n");
#endif
block->micPtr = micPtr;
block->status == MIC_MEM_STATUS_LOADED;
}
return micPtr;
}
void * MICMemAddBlock(MICMemBlockArray * micMem,
void * hostPtr, uint64_t atomSize, uint64_t atomCount,
char * tag) {
if (micMem->blockUsed >= micMem->blockMaxSize) {
printf("[SAFE-GUARD] There isn't enough MIC memory block for your new block %s\n",tag);
printf("Consider top-up the value MIC_MEM_MAX_BLOCK_SIZE or review all allocated block to reduce count.\n");
return NULL;
} else {
int idx = micMem->blockUsed;
MICMemBlock * block = &(micMem->blocks[idx]);
block->atomSize = atomSize;
block->atomCount = atomCount;
block->hostPtr = hostPtr;
block->micPtr = NULL;
strcpy(block->tag,tag);
block->status = MIC_MEM_STATUS_READY;
void * micPtr = MICMemLoadBlock(block,micMem->threadId,micMem->threadCount);
block->micPtr = micPtr;
micMem->blockUsed++;
return block->micPtr;
}
}
MICMemBlockArray * MICMemCreate(int threadId, int threadCount) {
MICMemBlockArray * micMem = (MICMemBlockArray*) malloc(sizeof(MICMemBlockArray));
micMem->blocks = (MICMemBlock*) malloc(sizeof(MICMemBlock) * MIC_MEM_MAX_BLOCK_SIZE);
micMem->blockMaxSize = MIC_MEM_MAX_BLOCK_SIZE;
micMem->blockUsed = 0;
micMem->threadId = threadId;
micMem->threadCount = threadCount;
int i;
for (i=0;i<micMem->blockMaxSize;i++) {
micMem->blocks[i].status = MIC_MEM_STATUS_EMPTY;
}
return micMem;
}
/*
void MICMemLoad(MICMemBlockArray * micMem, int threadId) {
int i;
for (i=0;i<micMem->blockMaxSize;i++) {
MICMemBlock * block = &(micMem->blocks[i]);
MICMemLoadBlock(block,threadId);
void * micPtr = (*(block->micPtr));
printf("ASD\n");
////// TEMP HACK BEGIN
if (i==0) {
#pragma offload target(mic : threadId) \
inout(block:length(1) alloc_if(1) free_if(1))
{
printf("nbytes : %llu\n",micPtr);
int j;
uint64_t * m = (uint64_t *) micPtr;
for (j=0;j<100;j++) {
printf("%u ",m[j]);
}printf("\n");
fflush(0);
}
}
////// TEMP HACK END
}
}
void MICMemUnload(MICMemBlockArray * micMem) {
}
*/
void MICMemFreeBlock(MICMemBlock * block, int threadId) {
if (block->status == MIC_MEM_STATUS_READY) {
void * micPtr = block->micPtr;
#pragma offload target(mic : threadId)
{
_mm_free(micPtr);
}
}
}
void MICMemFree(MICMemBlockArray * micMem) {
int i;
for (i=0;i<micMem->blockMaxSize;i++) {
MICMemBlock * block = &(micMem->blocks[i]);
MICMemFreeBlock(block,micMem->threadId);
}
free(micMem->blocks);
micMem->blocks = NULL;
free(micMem);
}
void MICMemDebugPrint(MICMemBlockArray * micMem) {
int i;
for (i=0;i<micMem->blockMaxSize;i++) {
MICMemBlock * block = &(micMem->blocks[i]);
if (block->status != MIC_MEM_STATUS_EMPTY) {
printf("BUFFER#%-4d - %s - %d\n",i,block->tag,block->status);
printf(" SIZE = %llu x %llu = %llu\n",block->atomSize,block->atomCount,block->atomSize*block->atomCount);
}
}
}