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/* -*- mode: C; tab-width: 2; indent-tabs-mode: nil; -*- */
/* time_bound.c
*
* Estimates the largest number of updates that
* will keep the benchmark's execution time under
* a specified time bound.
*
* The number of updates is estimated by performing
* a fraction (currently 1% as defined in time_bound.h)
* of the default number of updates and
* measuring the execution time. The maximum
* number of updates then is estimated based on
* the average execution time per update and the time
* bound.
*/
#include <hpcc.h>
#include "RandomAccess.h"
#include "time_bound.h"
#include "buckets.h"
void HPCC_Power2NodesTime(HPCC_RandomAccess_tabparams_t tparams, double timeBound, u64Int *EstimatedNumIter) {
s64Int i, j;
int proc_count;
s64Int SendCnt;
u64Int Ran;
s64Int WhichPe;
u64Int LocalOffset;
int logLocalTableSize = tparams.logTableSize - tparams.logNumProcs;
int NumberReceiving = tparams.NumProcs - 1;
#ifdef USE_MULTIPLE_RECV
int index, NumRecvs;
MPI_Request inreq[MAX_RECV] = { MPI_REQUEST_NULL };
MPI_Request outreq = MPI_REQUEST_NULL;
#else
MPI_Request inreq, outreq = MPI_REQUEST_NULL;
#endif
int bufferBase;
u64Int inmsg;
MPI_Status status;
int have_done;
int pe;
int pendingUpdates;
int maxPendingUpdates;
int localBufferSize;
int peUpdates;
int recvUpdates;
Bucket_Ptr Buckets;
double ra_LoopRealTime;
double iterTime;
/* Initialize main table */
for (i=0; i<tparams.LocalTableSize; i++)
HPCC_Table[i] = i + tparams.GlobalStartMyProc;
/* Perform updates to main table. The scalar equivalent is:
*
* u64Int Ran;
* Ran = 1;
* for (i=0; i<NUPDATE; i++) {
* Ran = (Ran << 1) ^ (((s64Int) Ran < 0) ? POLY : 0);
* Table[Ran & (TABSIZE-1)] ^= Ran;
* }
*/
ra_LoopRealTime = -RTSEC();
pendingUpdates = 0;
maxPendingUpdates = MAX_TOTAL_PENDING_UPDATES;
localBufferSize = LOCAL_BUFFER_SIZE;
Buckets = HPCC_InitBuckets(tparams.NumProcs, maxPendingUpdates);
SendCnt = 4 * tparams.LocalTableSize/RA_SAMPLE_FACTOR;
Ran = HPCC_starts (4 * tparams.GlobalStartMyProc);
i = 0;
#ifdef USE_MULTIPLE_RECV
NumRecvs = (tparams.NumProcs > 4) ? (Mmin(4,MAX_RECV)) : 1;
for (j = 0; j < NumRecvs; j++)
MPI_Irecv(&LocalRecvBuffer[j*LOCAL_BUFFER_SIZE], localBufferSize,
tparams.dtype64, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD,
&inreq[j]);
#else
MPI_Irecv(&LocalRecvBuffer, localBufferSize, tparams.dtype64,
MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &inreq);
#endif
while (i < SendCnt) {
/* receive messages */
do {
#ifdef USE_MULTIPLE_RECV
MPI_Testany(NumRecvs, inreq, &index, &have_done, &status);
#else
MPI_Test(&inreq, &have_done, &status);
#endif
if (have_done) {
if (status.MPI_TAG == UPDATE_TAG) {
MPI_Get_count(&status, tparams.dtype64, &recvUpdates);
#ifdef USE_MULTIPLE_RECV
bufferBase = index*LOCAL_BUFFER_SIZE;
#else
bufferBase = 0;
#endif
for (j=0; j < recvUpdates; j ++) {
inmsg = LocalRecvBuffer[bufferBase+j];
HPCC_Table[inmsg & (tparams.LocalTableSize - 1)] ^= inmsg;
}
} else if (status.MPI_TAG == FINISHED_TAG) {
/* we got a done message. Thanks for playing... */
NumberReceiving--;
} else {
MPI_Abort( MPI_COMM_WORLD, -1 );
}
#ifdef USE_MULTIPLE_RECV
MPI_Irecv(&LocalRecvBuffer[index*LOCAL_BUFFER_SIZE], localBufferSize,
tparams.dtype64, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD,
&inreq[index]);
#else
MPI_Irecv(&LocalRecvBuffer, localBufferSize, tparams.dtype64,
MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &inreq);
#endif
}
} while (have_done && NumberReceiving > 0);
if (pendingUpdates < maxPendingUpdates) {
Ran = (Ran << 1) ^ ((s64Int) Ran < ZERO64B ? POLY : ZERO64B);
WhichPe = (Ran >> logLocalTableSize) & (tparams.NumProcs - 1);
if (WhichPe == tparams.MyProc) {
LocalOffset = (Ran & (tparams.TableSize - 1)) - tparams.GlobalStartMyProc;
HPCC_Table[LocalOffset] ^= Ran;
}
else {
HPCC_InsertUpdate(Ran, WhichPe, Buckets);
pendingUpdates++;
}
i++;
}
else {
MPI_Test(&outreq, &have_done, MPI_STATUS_IGNORE);
if (have_done) {
outreq = MPI_REQUEST_NULL;
pe = HPCC_GetUpdates (Buckets, LocalSendBuffer, localBufferSize, &peUpdates);
MPI_Isend(&LocalSendBuffer, peUpdates, tparams.dtype64, (int)pe, UPDATE_TAG,
MPI_COMM_WORLD, &outreq);
pendingUpdates -= peUpdates;
}
}
}
/* send updates in buckets */
while (pendingUpdates > 0) {
/* receive messages */
do {
#ifdef USE_MULTIPLE_RECV
MPI_Testany(NumRecvs, inreq, &index, &have_done, &status);
#else
MPI_Test(&inreq, &have_done, &status);
#endif
if (have_done) {
if (status.MPI_TAG == UPDATE_TAG) {
MPI_Get_count(&status, tparams.dtype64, &recvUpdates);
#ifdef USE_MULTIPLE_RECV
bufferBase = index * LOCAL_BUFFER_SIZE;
#else
bufferBase = 0;
#endif
for (j=0; j < recvUpdates; j ++) {
inmsg = LocalRecvBuffer[bufferBase+j];
HPCC_Table[inmsg & (tparams.LocalTableSize - 1)] ^= inmsg;
}
} else if (status.MPI_TAG == FINISHED_TAG) {
/* we got a done message. Thanks for playing... */
NumberReceiving--;
} else {
MPI_Abort( MPI_COMM_WORLD, -1 );
}
#ifdef USE_MULTIPLE_RECV
MPI_Irecv(&LocalRecvBuffer[index*LOCAL_BUFFER_SIZE], localBufferSize,
tparams.dtype64, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD,
&inreq[index]);
#else
MPI_Irecv(&LocalRecvBuffer, localBufferSize, tparams.dtype64,
MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &inreq);
#endif
}
} while (have_done && NumberReceiving > 0);
MPI_Test(&outreq, &have_done, MPI_STATUS_IGNORE);
if (have_done) {
outreq = MPI_REQUEST_NULL;
pe = HPCC_GetUpdates(Buckets, LocalSendBuffer, localBufferSize, &peUpdates);
MPI_Isend(&LocalSendBuffer, peUpdates, tparams.dtype64, (int)pe, UPDATE_TAG,
MPI_COMM_WORLD, &outreq);
pendingUpdates -= peUpdates;
}
}
/* send our done messages */
for (proc_count = 0 ; proc_count < tparams.NumProcs ; ++proc_count) {
if (proc_count == tparams.MyProc) { tparams.finish_req[tparams.MyProc] = MPI_REQUEST_NULL; continue; }
/* send garbage - who cares, no one will look at it */
MPI_Isend(&Ran, 0, tparams.dtype64, proc_count, FINISHED_TAG,
MPI_COMM_WORLD, tparams.finish_req + proc_count);
}
/* Finish everyone else up... */
while (NumberReceiving > 0) {
#ifdef USE_MULTIPLE_RECV
MPI_Waitany(NumRecvs, inreq, &index, &status);
#else
MPI_Wait(&inreq, &status);
#endif
if (status.MPI_TAG == UPDATE_TAG) {
MPI_Get_count(&status, tparams.dtype64, &recvUpdates);
#ifdef USE_MULTIPLE_RECV
bufferBase = index * LOCAL_BUFFER_SIZE;
#else
bufferBase = 0;
#endif
for (j=0; j <recvUpdates; j ++) {
inmsg = LocalRecvBuffer[bufferBase+j];
HPCC_Table[inmsg & (tparams.LocalTableSize - 1)] ^= inmsg;
}
} else if (status.MPI_TAG == FINISHED_TAG) {
/* we got a done message. Thanks for playing... */
NumberReceiving--;
} else {
MPI_Abort( MPI_COMM_WORLD, -1 );
}
#ifdef USE_MULTIPLE_RECV
MPI_Irecv(&LocalRecvBuffer[index*LOCAL_BUFFER_SIZE], localBufferSize,
tparams.dtype64, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD,
&inreq[index]);
#else
MPI_Irecv(&LocalRecvBuffer, localBufferSize, tparams.dtype64,
MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &inreq);
#endif
}
ra_LoopRealTime += RTSEC();
/* estimate largest number of iterations that satisfy time bound */
iterTime = (double)(ra_LoopRealTime/SendCnt);
*EstimatedNumIter = timeBound/iterTime;
#ifdef DEBUG_TIME_BOUND
fprintf (stdout, "MyProc: %4d SampledNumIter: %8d ", tparams.MyProc, SendCnt);
fprintf (stdout, "LoopRealTime: %.8f IterTime: %.8f EstimatedNumIter: %8d\n",
ra_LoopRealTime, iterTime, *EstimatedNumIter);
#endif
MPI_Waitall( tparams.NumProcs, tparams.finish_req, tparams.finish_statuses);
/* Be nice and clean up after ourselves */
HPCC_FreeBuckets(Buckets, tparams.NumProcs);
#ifdef USE_MULTIPLE_RECV
for (j = 0; j < NumRecvs; j++) {
MPI_Cancel(&inreq[j]);
MPI_Wait(&inreq[j], MPI_STATUS_IGNORE);
}
#else
MPI_Cancel(&inreq);
MPI_Wait(&inreq, MPI_STATUS_IGNORE);
#endif
MPI_Wait(&outreq, MPI_STATUS_IGNORE);
/* end multiprocessor code */
}
void HPCC_AnyNodesTime(HPCC_RandomAccess_tabparams_t tparams, double timeBound, u64Int *EstimatedNumIter) {
s64Int i, j;
int proc_count;
s64Int SendCnt;
u64Int Ran;
s64Int WhichPe;
u64Int GlobalOffset, LocalOffset;
int NumberReceiving = tparams.NumProcs - 1;
#ifdef USE_MULTIPLE_RECV
int index, NumRecvs;
MPI_Request inreq[MAX_RECV] = { MPI_REQUEST_NULL };
MPI_Request outreq = MPI_REQUEST_NULL;
#else
MPI_Request inreq, outreq = MPI_REQUEST_NULL;
#endif
u64Int inmsg;
int bufferBase;
MPI_Status status;
int have_done;
int pe;
int pendingUpdates;
int maxPendingUpdates;
int localBufferSize;
int peUpdates;
int recvUpdates;
Bucket_Ptr Buckets;
double ra_LoopRealTime;
double iterTime;
/* Initialize main table */
for (i=0; i<tparams.LocalTableSize; i++)
HPCC_Table[i] = i + tparams.GlobalStartMyProc;
/* Perform updates to main table. The scalar equivalent is:
*
* u64Int Ran;
* Ran = 1;
* for (i=0; i<NUPDATE; i++) {
* Ran = (Ran << 1) ^ (((s64Int) Ran < 0) ? POLY : 0);
* Table[Ran & (TABSIZE-1)] ^= Ran;
* }
*/
ra_LoopRealTime = -RTSEC();
pendingUpdates = 0;
maxPendingUpdates = MAX_TOTAL_PENDING_UPDATES;
localBufferSize = LOCAL_BUFFER_SIZE;
Buckets = HPCC_InitBuckets(tparams.NumProcs, maxPendingUpdates);
SendCnt = 4 * tparams.LocalTableSize/RA_SAMPLE_FACTOR;
Ran = HPCC_starts (4 * tparams.GlobalStartMyProc);
i = 0;
#ifdef USE_MULTIPLE_RECV
NumRecvs = (tparams.NumProcs > 4) ? (Mmin(4,MAX_RECV)) : 1;
for (j = 0; j < NumRecvs; j++)
MPI_Irecv(&LocalRecvBuffer[j*LOCAL_BUFFER_SIZE], localBufferSize,
tparams.dtype64, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD,
&inreq[j]);
#else
MPI_Irecv(&LocalRecvBuffer, localBufferSize, tparams.dtype64,
MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &inreq);
#endif
while (i < SendCnt) {
/* receive messages */
do {
#ifdef USE_MULTIPLE_RECV
MPI_Testany(NumRecvs, inreq, &index, &have_done, &status);
#else
MPI_Test(&inreq, &have_done, &status);
#endif
if (have_done) {
if (status.MPI_TAG == UPDATE_TAG) {
MPI_Get_count(&status, tparams.dtype64, &recvUpdates);
#ifdef USE_MULTIPLE_RECV
bufferBase = index*LOCAL_BUFFER_SIZE;
#else
bufferBase = 0;
#endif
for (j=0; j < recvUpdates; j ++) {
inmsg = LocalRecvBuffer[bufferBase+j];
LocalOffset = (inmsg & (tparams.TableSize - 1)) - tparams.GlobalStartMyProc;
HPCC_Table[LocalOffset] ^= inmsg;
}
} else if (status.MPI_TAG == FINISHED_TAG) {
/* we got a done message. Thanks for playing... */
NumberReceiving--;
} else {
MPI_Abort( MPI_COMM_WORLD, -1 );
}
#ifdef USE_MULTIPLE_RECV
MPI_Irecv(&LocalRecvBuffer[index*LOCAL_BUFFER_SIZE], localBufferSize,
tparams.dtype64, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD,
&inreq[index]);
#else
MPI_Irecv(&LocalRecvBuffer, localBufferSize, tparams.dtype64,
MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &inreq);
#endif
}
} while (have_done && NumberReceiving > 0);
if (pendingUpdates < maxPendingUpdates) {
Ran = (Ran << 1) ^ ((s64Int) Ran < ZERO64B ? POLY : ZERO64B);
GlobalOffset = Ran & (tparams.TableSize-1);
if ( GlobalOffset < tparams.Top)
WhichPe = ( GlobalOffset / (tparams.MinLocalTableSize + 1) );
else
WhichPe = ( (GlobalOffset - tparams.Remainder) / tparams.MinLocalTableSize );
if (WhichPe == tparams.MyProc) {
LocalOffset = (Ran & (tparams.TableSize - 1)) - tparams.GlobalStartMyProc;
HPCC_Table[LocalOffset] ^= Ran;
}
else {
HPCC_InsertUpdate(Ran, WhichPe, Buckets);
pendingUpdates++;
}
i++;
}
else {
MPI_Test(&outreq, &have_done, MPI_STATUS_IGNORE);
if (have_done) {
outreq = MPI_REQUEST_NULL;
pe = HPCC_GetUpdates (Buckets, LocalSendBuffer, localBufferSize, &peUpdates);
MPI_Isend(&LocalSendBuffer, peUpdates, tparams.dtype64, (int)pe, UPDATE_TAG,
MPI_COMM_WORLD, &outreq);
pendingUpdates -= peUpdates;
}
}
}
/* send updates in buckets */
while (pendingUpdates > 0) {
/* receive messages */
do {
#ifdef USE_MULTIPLE_RECV
MPI_Testany(NumRecvs, inreq, &index, &have_done, &status);
#else
MPI_Test(&inreq, &have_done, &status);
#endif
if (have_done) {
if (status.MPI_TAG == UPDATE_TAG) {
MPI_Get_count(&status, tparams.dtype64, &recvUpdates);
#ifdef USE_MULTIPLE_RECV
bufferBase = index*LOCAL_BUFFER_SIZE;
#else
bufferBase = 0;
#endif
for (j=0; j < recvUpdates; j ++) {
inmsg = LocalRecvBuffer[bufferBase+j];
LocalOffset = (inmsg & (tparams.TableSize - 1)) - tparams.GlobalStartMyProc;
HPCC_Table[LocalOffset] ^= inmsg;
}
} else if (status.MPI_TAG == FINISHED_TAG) {
/* we got a done message. Thanks for playing... */
NumberReceiving--;
} else {
MPI_Abort( MPI_COMM_WORLD, -1 );
}
#ifdef USE_MULTIPLE_RECV
MPI_Irecv(&LocalRecvBuffer[index*LOCAL_BUFFER_SIZE], localBufferSize,
tparams.dtype64, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD,
&inreq[index]);
#else
MPI_Irecv(&LocalRecvBuffer, localBufferSize, tparams.dtype64,
MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &inreq);
#endif
}
} while (have_done && NumberReceiving > 0);
MPI_Test(&outreq, &have_done, MPI_STATUS_IGNORE);
if (have_done) {
outreq = MPI_REQUEST_NULL;
pe = HPCC_GetUpdates (Buckets, LocalSendBuffer, localBufferSize, &peUpdates);
MPI_Isend(&LocalSendBuffer, peUpdates, tparams.dtype64, (int)pe, UPDATE_TAG,
MPI_COMM_WORLD, &outreq);
pendingUpdates -= peUpdates;
}
}
/* send our done messages */
for (proc_count = 0 ; proc_count < tparams.NumProcs ; ++proc_count) {
if (proc_count == tparams.MyProc) { tparams.finish_req[tparams.MyProc] = MPI_REQUEST_NULL; continue; }
/* send garbage - who cares, no one will look at it */
MPI_Isend(&Ran, 0, tparams.dtype64, proc_count, FINISHED_TAG,
MPI_COMM_WORLD, tparams.finish_req + proc_count);
}
/* Finish everyone else up... */
while (NumberReceiving > 0) {
#ifdef USE_MULTIPLE_RECV
MPI_Waitany(NumRecvs, inreq, &index, &status);
#else
MPI_Wait(&inreq, &status);
#endif
if (status.MPI_TAG == UPDATE_TAG) {
MPI_Get_count(&status, tparams.dtype64, &recvUpdates);
#ifdef USE_MULTIPLE_RECV
bufferBase = index * LOCAL_BUFFER_SIZE;
#else
bufferBase = 0;
#endif
for (j=0; j <recvUpdates; j ++) {
inmsg = LocalRecvBuffer[bufferBase+j];
LocalOffset = (inmsg & (tparams.TableSize - 1)) - tparams.GlobalStartMyProc;
HPCC_Table[LocalOffset] ^= inmsg;
}
} else if (status.MPI_TAG == FINISHED_TAG) {
/* we got a done message. Thanks for playing... */
NumberReceiving--;
} else {
MPI_Abort( MPI_COMM_WORLD, -1 );
}
#ifdef USE_MULTIPLE_RECV
MPI_Irecv(&LocalRecvBuffer[index*LOCAL_BUFFER_SIZE], localBufferSize,
tparams.dtype64, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD,
&inreq[index]);
#else
MPI_Irecv(&LocalRecvBuffer, localBufferSize, tparams.dtype64,
MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &inreq);
#endif
}
ra_LoopRealTime += RTSEC();
iterTime = (double) (ra_LoopRealTime/SendCnt);
*EstimatedNumIter = (int)(timeBound/iterTime);
#ifdef DEBUG_TIME_BOUND
fprintf (stdout, "MyProc: %4d SampledNumIter: %8d ", tparams.MyProc, SendCnt);
fprintf (stdout, "LoopRealTime: %.8f IterTime: %.8f EstimatedNumIter: %8d\n",
ra_LoopRealTime, iterTime, *EstimatedNumIter);
#endif
MPI_Waitall( tparams.NumProcs, tparams.finish_req, tparams.finish_statuses);
/* Be nice and clean up after ourselves */
HPCC_FreeBuckets(Buckets, tparams.NumProcs);
#ifdef USE_MULTIPLE_RECV
for (j = 0; j < NumRecvs; j++) {
MPI_Cancel(&inreq[j]);
MPI_Wait(&inreq[j], MPI_STATUS_IGNORE);
}
#else
MPI_Cancel(&inreq);
MPI_Wait(&inreq, MPI_STATUS_IGNORE);
#endif
MPI_Wait(&outreq, MPI_STATUS_IGNORE);
/* end multiprocessor code */
}
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