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/* ************************************************************************
* Copyright 2013 Advanced Micro Devices, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ************************************************************************/
#include <math.h> // sqrt()
#include "toolslib.h"
#include "clblas_stddef.h"
#include "storage_data.h"
unsigned int DimensionsArrayL3[]= {7, 13, 32, 48, 64, 64};
unsigned int DimensionsArrayL2[]= {768/4, 1792/4, 3328/4, 5248/4, 6784/4,
3*1024/4};
int getDimensionCount(TargetDevice* tdev, int func)
{
(void)tdev;
(void)func;
return DIMARRAYCOUNT;
}
//
dimension
getDimensionID(TargetDevice* tdev, int func, size_t M, size_t N, size_t K)
{
(void)tdev;
(void)func;
(void)M;
(void)N;
(void)K;
return 0;
}
#include <assert.h>
unsigned int
getDimension(int idx, DataType dt, DeviceInfo *devInfo, int func)
{
unsigned int dim;
// bas - banks aligned size, in bytes, should be
// number of banks * number of channels * bytes per channel
// here it is set to 8*256 = 2048 = 512 floats
size_t bas = 8*256;
unsigned int tsize;
// The minimum step for which the tails are not.
size_t noTailStep;
float step;
(void) func;
tsize = dtypeSize(dt);
noTailStep = 256 * sizeof(cl_float) / tsize;
// !!! DEBUG
//printf("[%s, line %d]: devInfo->globalSize = %lu\n",
// __func__, __LINE__, devInfo->globalSize);
/*
* Skip the smallest size, it does not provide sufficient
* device payload anyway
*/
//i = (idx == DIMARRAYCOUNT - 1) ? (DIMARRAYCOUNT - 1) : (idx + 1);
// dim = DimensionsArray2[i];
// dim *= devInfo->nrComputeUnits;
step = (float)umin(devInfo->nrComputeUnits, funcBlasLevel(func) == 2 ? 1 : 24);
switch (dt) {
case TYPE_FLOAT:
step *= 4;
break;
case TYPE_DOUBLE:
case TYPE_COMPLEX_FLOAT:
step = 2.8f * step;
break;
case TYPE_COMPLEX_DOUBLE:
#if defined(_WIN32) && defined(FORCE_BSOD)
if (func != CLBLAS_SYRK && func != CLBLAS_SYR2K) {
step *= 2;
}
#else
step *= 2;
#endif
break;
}
if (funcBlasLevel(func) == 2) {
dim = (unsigned int)(step * DimensionsArrayL2[idx]);
}
else {
dim = (unsigned int)(step * DimensionsArrayL3[idx]);
}
if (dim * dim * tsize > devInfo->maxMemAllocSize) {
dim = (unsigned int)sqrt((double)(devInfo->maxMemAllocSize / tsize));
}
assert(devInfo->globalSize);
if (dim * dim * tsize >= devInfo->globalSize / 3) {
dim = (unsigned int)sqrt((double)devInfo->globalSize / 3 / tsize);
}
dim = (unsigned int)roundUp(dim - (noTailStep/2), noTailStep);
if (idx == BANK_ALIGNED_CASE_RECORD_IDX) {
// force size to be banks aligned
if (dim * dtypeSize(dt) % bas != 0) {
dim = (unsigned int)roundUp(dim, bas / dtypeSize(dt));
}
}
else {
// avoid banks aligned size adding maximal base dimension
if (dim * dtypeSize(dt) % bas == 0) {
// dim += DimensionsArray2[DIMARRAYCOUNT - 1] /
// (dtypeSize(dt) / sizeof(cl_float));
dim += (unsigned int)noTailStep;
}
}
return dim;
}
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