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2026-07-13 12:47:05 +08:00

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/* ******************************************************************************
*
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://www.apache.org/licenses/LICENSE-2.0.
*
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership.
* 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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
//
// @author AbdelRauf
//
#include <execution/ThreadPool.h>
#include <execution/Threads.h>
#include <helpers/LoopsCoordsHelper.h>
#include <ops/declarable/helpers/reductions.h>
#include <cmath>
#include <memory>
#include <stdexcept>
#include <type_traits>
#if 1
#define LOG_CALLS(X)
#else
#define LOG_CALLS(X) sd_printf("___%s_________%d+\n", __PRETTY_FUNCTION__, X);
#endif
namespace sd {
namespace ops {
namespace helpers {
constexpr int threadingThreshold = 4096;
template <typename X, typename Z, typename ReductionOp>
static SD_INLINE void indexInnerReductionRank1(const X* buffer, X& current, Z& argCurrent,
const sd::LongType& loopCount) {
argCurrent = 0;
current = buffer[0];
LOG_CALLS(0)
sd::LongType j_offset = 0;
for (Z j = 0; j < loopCount; j++) {
ReductionOp::update(current, argCurrent, buffer[j], j);
}
}
template <typename X, typename Z, typename ReductionOp>
static SD_INLINE void indexInnerReductionRank1(const X* buffer, X& current, Z& argCurrent,
const sd::LongType& loopCount, const sd::LongType& inner_stride) {
argCurrent = 0;
current = buffer[0];
LOG_CALLS(0)
sd::LongType j_offset = 0;
for (Z j = 0; j < loopCount; j++) {
ReductionOp::update(current, argCurrent, buffer[j_offset], j);
j_offset += inner_stride;
}
}
template <typename X, typename Z, typename ReductionOp, size_t constRank, bool LastIndexFaster = true>
static SD_INLINE void indexInnerReductionConstRank(const X* buffer, X& current, Z& argCurrent,
const sd::LongType* bases, const sd::LongType* strides,
const sd::LongType outerLoopCount,
const sd::LongType& innerLoopCount) {
// skip 1 from the beginning or end depending the Order
constexpr size_t updated_index = LastIndexFaster ? 0 : 1;
constexpr size_t updated_rank = constRank - 1;
sd::CoordsState<updated_rank - 1> cst;
// we skip 1
size_t offset =
sd::init_coords<updated_rank, 0, LastIndexFaster>(cst, 0, bases + updated_index, strides + updated_index);
Z startIndex = 0;
argCurrent = 0;
current = buffer[offset];
LOG_CALLS(0)
for (Z i = 0; i < outerLoopCount; i++) {
const X* inner_buffer = &(buffer[offset]);
// typename std::make_signed<Z>::type iArgMax = -1;
for (Z j = 0; j < innerLoopCount; j++) {
ReductionOp::update(current, argCurrent, inner_buffer[j], j + startIndex);
}
// we skip 1
offset = sd::inc_coords<updated_rank, 0, LastIndexFaster>(cst, offset);
startIndex += innerLoopCount;
}
}
template <typename X, typename Z, typename ReductionOp, size_t constRank, bool LastIndexFaster = true>
static SD_INLINE void indexInnerReductionConstRank(const X* buffer, X& current, Z& argCurrent,
const sd::LongType* bases, const sd::LongType* strides,
const sd::LongType outerLoopCount,
const sd::LongType& innerLoopCount,
const sd::LongType& inner_stride) {
// skip 1 from the beginning or end depending the Order
constexpr size_t updated_index = LastIndexFaster ? 0 : 1;
constexpr size_t updated_rank = constRank - 1;
sd::CoordsState<updated_rank - 1> cst;
// we skip 1
size_t offset =
sd::init_coords<updated_rank, 0, LastIndexFaster>(cst, 0, bases + updated_index, strides + updated_index);
Z startIndex = 0;
argCurrent = 0;
current = buffer[offset];
LOG_CALLS(0)
for (Z i = 0; i < outerLoopCount; i++) {
const X* inner_buffer = &(buffer[offset]);
for (Z j = 0; j < innerLoopCount; j++) {
ReductionOp::update(current, argCurrent, *inner_buffer, j + startIndex);
inner_buffer += inner_stride;
}
// we alreaddy skiped
offset = sd::inc_coords<updated_rank, 0, LastIndexFaster>(cst, offset);
startIndex += innerLoopCount;
}
}
template <typename X, typename Z, typename ReductionOp, bool LastIndexFaster = true>
static SD_INLINE void indexInnerReduction(const LongType& rank, const X* buffer, X& current, Z& argCurrent,
const sd::LongType* bases, const sd::LongType* strides,
const sd::LongType& outerLoopStart, const sd::LongType& outerLoopStop,
const sd::LongType& innerLoopCount) {
size_t offset = 0;
sd::LongType outerLoopCount = outerLoopStop - outerLoopStart;
sd::LongType coords[SD_MAX_RANK] = {};
sd::LongType* ptr_coords = (sd::LongType*)&coords;
if (outerLoopStart > 0) {
INDEX2COORDS(outerLoopStart, rank - 1, bases, ptr_coords);
COORDS2INDEX(rank, strides, ptr_coords, offset);
}
Z startIndex = outerLoopStart * innerLoopCount;
argCurrent = startIndex;
current = buffer[offset];
LOG_CALLS(0)
for (Z i = 0; i < outerLoopCount; i++) {
const X* inner_buffer = &(buffer[offset]);
for (Z j = 0; j < innerLoopCount; j++) {
ReductionOp::update(current, argCurrent, inner_buffer[j], j + startIndex);
}
offset = inc_coords<true>(bases, strides, ptr_coords, offset, rank, 1);
startIndex += innerLoopCount;
}
}
template <typename X, typename Z, typename ReductionOp, bool LastIndexFaster = true>
static SD_INLINE void indexInnerReduction(const int& rank, const X* buffer, X& current, Z& argCurrent,
const sd::LongType* bases, const sd::LongType* strides,
const sd::LongType& outerLoopStart, const sd::LongType& outerLoopStop,
const sd::LongType& innerLoopCount, const sd::LongType& inner_stride) {
size_t offset = 0;
sd::LongType outerLoopCount = outerLoopStop - outerLoopStart;
sd::LongType coords[SD_MAX_RANK] = {};
sd::LongType* ptr_coords = (sd::LongType*)&coords;
if (outerLoopStart > 0) {
INDEX2COORDS(outerLoopStart, rank - 1, bases, ptr_coords);
COORDS2INDEX(rank, strides, ptr_coords, offset);
}
Z startIndex = outerLoopStart * innerLoopCount;
argCurrent = startIndex;
current = buffer[offset];
LOG_CALLS(0)
for (Z i = 0; i < outerLoopCount; i++) {
const X* inner_buffer = &(buffer[offset]);
for (Z j = 0; j < innerLoopCount; j++) {
ReductionOp::update(current, argCurrent, inner_buffer[j * inner_stride], startIndex + j);
}
offset = inc_coords<true>(bases, strides, ptr_coords, offset, rank, 1);
startIndex += innerLoopCount;
}
}
template <typename X, typename Z, typename ReductionOp>
static SD_INLINE void indexInnerReductionRank1Block4WithMerge(const X* buffer, X& current, Z& argCurrent,
const sd::LongType& loopCount) {
argCurrent = 0;
current = buffer[0];
LOG_CALLS(0)
sd::LongType loopCount4 = loopCount / 4;
sd::LongType loopCountEnd = loopCount4 + (loopCount & 3);
const X* buffer1 = buffer + 1 * loopCount4;
const X* buffer2 = buffer1 + 1 * loopCount4;
const X* buffer3 = buffer2 + 1 * loopCount4;
X current1 = *buffer1;
X current2 = *buffer2;
X current3 = *buffer3;
Z argCurrent1 = 0;
Z argCurrent2 = 0;
Z argCurrent3 = 0;
for (Z j = 0; j < loopCount4; j++) {
ReductionOp::update(current, argCurrent, buffer[j], j);
ReductionOp::update(current1, argCurrent1, buffer1[j], j);
ReductionOp::update(current2, argCurrent2, buffer2[j], j);
ReductionOp::update(current3, argCurrent3, buffer3[j], j);
}
// tail
for (Z j = loopCount4; j < loopCountEnd; j++) {
ReductionOp::update(current3, argCurrent3, buffer3[j], j);
}
// merge
argCurrent1 += loopCount4;
argCurrent2 += 2 * loopCount4;
argCurrent3 += 3 * loopCount4;
ReductionOp::update(current, argCurrent, current1, argCurrent1);
ReductionOp::update(current, argCurrent, current2, argCurrent2);
ReductionOp::update(current, argCurrent, current3, argCurrent3);
}
template <typename X, typename Z, typename ReductionOp>
static SD_INLINE void indexInnerReductionRank1Block4WithMerge(const X* buffer, X& current, Z& argCurrent,
const sd::LongType& loopCount,
const sd::LongType& inner_stride) {
argCurrent = 0;
current = buffer[0];
LOG_CALLS(0)
sd::LongType loopCount4 = loopCount / 4;
sd::LongType loopCountEnd = loopCount4 + (loopCount & 3);
const X* buffer1 = buffer + inner_stride * loopCount4;
const X* buffer2 = buffer1 + inner_stride * loopCount4;
const X* buffer3 = buffer2 + inner_stride * loopCount4;
X current1 = *buffer1;
X current2 = *buffer2;
X current3 = *buffer3;
Z argCurrent1 = 0;
Z argCurrent2 = 0;
Z argCurrent3 = 0;
sd::LongType j_offset = 0;
for (Z j = 0; j < loopCount4; j++) {
ReductionOp::update(current, argCurrent, buffer[j_offset], j);
ReductionOp::update(current1, argCurrent1, buffer1[j_offset], j);
ReductionOp::update(current2, argCurrent2, buffer2[j_offset], j);
ReductionOp::update(current3, argCurrent3, buffer3[j_offset], j);
j_offset += inner_stride;
}
// tail
for (Z j = loopCount4; j < loopCountEnd; j++) {
ReductionOp::update(current3, argCurrent3, buffer3[j_offset], j);
j_offset += inner_stride;
}
// merge
argCurrent1 += loopCount4;
argCurrent2 += 2 * loopCount4;
argCurrent3 += 3 * loopCount4;
ReductionOp::update(current, argCurrent, current1, argCurrent1);
ReductionOp::update(current, argCurrent, current2, argCurrent2);
ReductionOp::update(current, argCurrent, current3, argCurrent3);
}
template <typename X, typename Z, typename ReductionOp>
static SD_INLINE void indexInnerReductionRank1Block4(const X* buffer, const X* buffer1, const X* buffer2,
const X* buffer3, Z* output, Z* output1, Z* output2, Z* output3,
const sd::LongType& loopCount) {
LOG_CALLS(0)
Z argCurrent = 0;
Z argCurrent1 = 0;
Z argCurrent2 = 0;
Z argCurrent3 = 0;
X current = buffer[0];
X current1 = buffer1[0];
X current2 = buffer2[0];
X current3 = buffer3[0];
for (Z j = 0; j < loopCount; j++) {
ReductionOp::update(current, argCurrent, buffer[j], j);
ReductionOp::update(current1, argCurrent1, buffer1[j], j);
ReductionOp::update(current2, argCurrent2, buffer2[j], j);
ReductionOp::update(current3, argCurrent3, buffer3[j], j);
}
*output = argCurrent;
*output1 = argCurrent1;
*output2 = argCurrent2;
*output3 = argCurrent3;
return;
}
template <typename X, typename Z, typename ReductionOp>
static SD_INLINE void indexInnerReductionRank1Block4(const X* buffer, const X* buffer1, const X* buffer2,
const X* buffer3, Z* output, Z* output1, Z* output2, Z* output3,
const sd::LongType& loopCount, const sd::LongType& inner_stride) {
LOG_CALLS(0)
Z argCurrent = 0;
Z argCurrent1 = 0;
Z argCurrent2 = 0;
Z argCurrent3 = 0;
X current = buffer[0];
X current1 = buffer1[0];
X current2 = buffer2[0];
X current3 = buffer3[0];
sd::LongType j_offset = 0;
for (Z j = 0; j < loopCount; j++) {
ReductionOp::update(current, argCurrent, buffer[j_offset], j);
ReductionOp::update(current1, argCurrent1, buffer1[j_offset], j);
ReductionOp::update(current2, argCurrent2, buffer2[j_offset], j);
ReductionOp::update(current3, argCurrent3, buffer3[j_offset], j);
j_offset += inner_stride;
}
*output = argCurrent;
*output1 = argCurrent1;
*output2 = argCurrent2;
*output3 = argCurrent3;
return;
}
template <typename X, typename Z, typename ReductionOp, size_t constRank, bool LastIndexFaster = true>
static SD_INLINE void indexInnerReductionConstRankBlock4(const X* buffer, const X* buffer1, const X* buffer2,
const X* buffer3, Z* output, Z* output1, Z* output2,
Z* output3, const sd::LongType* bases,
const sd::LongType* strides,
const sd::LongType& outerLoopCount,
const sd::LongType& innerLoopCount) {
LOG_CALLS(0)
// skip 1 from the beginning or end depending the Order
constexpr size_t updated_index = LastIndexFaster ? 0 : 1;
constexpr size_t updated_rank = constRank - 1;
sd::CoordsState<updated_rank - 1> cst;
// we skip 1
size_t offset =
sd::init_coords<updated_rank, 0, LastIndexFaster>(cst, 0, bases + updated_index, strides + updated_index);
Z startIndex = 0;
Z argCurrent = 0;
Z argCurrent1 = 0;
Z argCurrent2 = 0;
Z argCurrent3 = 0;
X current = buffer[0];
X current1 = buffer1[0];
X current2 = buffer2[0];
X current3 = buffer3[0];
// LOG_CALLS(0)
for (Z i = 0; i < outerLoopCount; i++) {
const X* inner_buffer = &(buffer[offset]);
const X* inner_buffer1 = &(buffer1[offset]);
const X* inner_buffer2 = &(buffer2[offset]);
const X* inner_buffer3 = &(buffer3[offset]);
// typename std::make_signed<Z>::type iArgMax = -1;
for (Z j = 0; j < innerLoopCount; j++) {
ReductionOp::update(current, argCurrent, inner_buffer[j], j + startIndex);
ReductionOp::update(current1, argCurrent1, inner_buffer1[j], j + startIndex);
ReductionOp::update(current2, argCurrent2, inner_buffer2[j], j + startIndex);
ReductionOp::update(current3, argCurrent3, inner_buffer3[j], j + startIndex);
}
// we skip 1
offset = sd::inc_coords<updated_rank, 0, LastIndexFaster>(cst, offset);
startIndex += innerLoopCount;
}
*output = argCurrent;
*output1 = argCurrent1;
*output2 = argCurrent2;
*output3 = argCurrent3;
return;
}
template <typename X, typename Z, typename ReductionOp, size_t constRank, bool LastIndexFaster = true>
static SD_INLINE void indexInnerReductionConstRankBlock4(
const X* buffer, const X* buffer1, const X* buffer2, const X* buffer3, Z* output, Z* output1, Z* output2,
Z* output3, const sd::LongType* bases, const sd::LongType* strides, const sd::LongType& outerLoopCount,
const sd::LongType& innerLoopCount, const sd::LongType& inner_stride) {
LOG_CALLS(0)
// skip 1 from the beginning or end depending the Order
constexpr size_t updated_index = LastIndexFaster ? 0 : 1;
constexpr size_t updated_rank = constRank - 1;
sd::CoordsState<updated_rank - 1> cst;
// we skip 1
size_t offset =
sd::init_coords<updated_rank, 0, LastIndexFaster>(cst, 0, bases + updated_index, strides + updated_index);
Z startIndex = 0;
Z argCurrent = 0;
Z argCurrent1 = 0;
Z argCurrent2 = 0;
Z argCurrent3 = 0;
X current = buffer[0];
X current1 = buffer1[0];
X current2 = buffer2[0];
X current3 = buffer3[0];
// LOG_CALLS(0)
for (Z i = 0; i < outerLoopCount; i++) {
const X* inner_buffer = &(buffer[offset]);
const X* inner_buffer1 = &(buffer1[offset]);
const X* inner_buffer2 = &(buffer2[offset]);
const X* inner_buffer3 = &(buffer3[offset]);
// typename std::make_signed<Z>::type iArgMax = -1;
sd::LongType inner_offset = 0;
for (Z j = 0; j < innerLoopCount; j++) {
ReductionOp::update(current, argCurrent, inner_buffer[inner_offset], j + startIndex);
ReductionOp::update(current1, argCurrent1, inner_buffer1[inner_offset], j + startIndex);
ReductionOp::update(current2, argCurrent2, inner_buffer2[inner_offset], j + startIndex);
ReductionOp::update(current3, argCurrent3, inner_buffer3[inner_offset], j + startIndex);
inner_offset += inner_stride;
}
// we skip 1
offset = sd::inc_coords<updated_rank, 0, LastIndexFaster>(cst, offset);
startIndex += innerLoopCount;
}
*output = argCurrent;
*output1 = argCurrent1;
*output2 = argCurrent2;
*output3 = argCurrent3;
return;
}
template <typename X, typename Z, typename ReductionOp, bool LastIndexFaster = true>
static void argIndexCase1Scalar(const int& second_rank, const sd::LongType* inner_bases,
const sd::LongType* inner_strides, const X* bufferX, Z* outputZ) {
sd::LongType inner_total;
sd::LongType inner_last = 0;
int maxThreads = sd::Environment::getInstance().maxMasterThreads();
if (second_rank == 1) {
inner_total = inner_bases[0];
if (inner_total < threadingThreshold) {
maxThreads = 1;
}
} else {
inner_total = getLength<LastIndexFaster>(inner_bases, second_rank, 1, inner_last);
if (inner_total * inner_last < threadingThreshold) {
maxThreads = 1;
}
}
std::unique_ptr<X[]> maxValues(new X[maxThreads]);
std::unique_ptr<Z[]> maxIndices(new Z[maxThreads]);
X* ptrMaxValues = maxValues.get();
Z* ptrMaxIndices = maxIndices.get();
auto func = [ptrMaxValues, ptrMaxIndices, inner_last, second_rank, inner_bases, inner_strides, bufferX](
uint64_t thread_id, int64_t start, int64_t stop, int64_t increment) -> void {
// LOG_CALLS(0)
const sd::LongType inner_stride = LastIndexFaster ? inner_strides[second_rank - 1] : inner_strides[0];
Z argCurrent;
X current;
if (second_rank == 1) {
const sd::LongType loopTotal = stop - start;
if (inner_stride == 1) {
indexInnerReductionRank1Block4WithMerge<X, Z, ReductionOp>(&(bufferX[start]), current, argCurrent, loopTotal);
} else {
indexInnerReductionRank1Block4WithMerge<X, Z, ReductionOp>(&(bufferX[start * inner_stride]), current,
argCurrent, loopTotal, inner_stride);
}
ptrMaxIndices[thread_id] = argCurrent + start;
} else {
if (inner_stride == 1) {
indexInnerReduction<X, Z, ReductionOp, LastIndexFaster>(second_rank, bufferX, current, argCurrent, inner_bases,
inner_strides, start, stop, inner_last, inner_stride);
} else {
indexInnerReduction<X, Z, ReductionOp, LastIndexFaster>(second_rank, bufferX, current, argCurrent, inner_bases,
inner_strides, start, stop, inner_last, inner_stride);
}
ptrMaxIndices[thread_id] = argCurrent;
}
ptrMaxValues[thread_id] = current;
};
#if 0
int Count = 0;
func(0, 0, inner_total, 1);
#else
int Count = samediff::Threads::parallel_tad(func, 0, inner_total, 1, maxThreads);
#endif
Z arg = 0;
X current = ptrMaxValues[0];
for (Z i = 1; i < Count; i++) {
ReductionOp::update(current, arg, ptrMaxValues[i], i);
}
*outputZ = ptrMaxIndices[arg];
}
template <typename X, typename Z, typename ReductionOp, typename Movement, bool LastIndexFaster = true>
static void argReductionInnerCases(Movement& movement, sd::LongType loopTotal, const int& second_rank,
const sd::LongType* inner_bases, const sd::LongType* inner_strides, const X* bufferX,
Z* outputZ) {
sd::LongType inner_stride = true /*LastIndexFaster*/ ? inner_strides[second_rank - 1] : inner_strides[0];
sd::LongType loopTotal_K = loopTotal / 4;
sd::LongType loopTotal_Tail = loopTotal & 3;
if (inner_stride == 1) {
if (second_rank == 1) {
LOG_CALLS(0)
sd::LongType inner_total = getLength<true>(inner_bases, second_rank);
for (sd::LongType i = 0; i < loopTotal_K; i++) {
const X* buffer0 = &(bufferX[movement.First()]);
Z* output0 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer1 = &(bufferX[movement.First()]);
Z* output1 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer2 = &(bufferX[movement.First()]);
Z* output2 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer3 = &(bufferX[movement.First()]);
Z* output3 = &(outputZ[movement.Second()]);
movement.increment();
indexInnerReductionRank1Block4<X, Z, ReductionOp>(buffer0, buffer1, buffer2, buffer3, output0, output1, output2,
output3, inner_total);
}
if (inner_total >= 2048) {
for (sd::LongType i = 0; i < loopTotal_Tail; i++) {
X current;
const X* buffer0 = &(bufferX[movement.First()]);
indexInnerReductionRank1Block4WithMerge<X, Z, ReductionOp>(buffer0, current, outputZ[movement.Second()],
inner_total);
movement.increment();
}
} else {
for (sd::LongType i = 0; i < loopTotal_Tail; i++) {
X current;
const X* buffer0 = &(bufferX[movement.First()]);
indexInnerReductionRank1<X, Z, ReductionOp>(buffer0, current, outputZ[movement.Second()], inner_total);
movement.increment();
}
}
} else {
sd::LongType inner_last;
sd::LongType inner_loop = getLength<true>(inner_bases, second_rank, 1, inner_last);
if (second_rank == 2) {
LOG_CALLS(1)
for (sd::LongType i = 0; i < loopTotal_K; i++) {
const X* buffer0 = &(bufferX[movement.First()]);
Z* output0 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer1 = &(bufferX[movement.First()]);
Z* output1 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer2 = &(bufferX[movement.First()]);
Z* output2 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer3 = &(bufferX[movement.First()]);
Z* output3 = &(outputZ[movement.Second()]);
movement.increment();
indexInnerReductionConstRankBlock4<X, Z, ReductionOp, 2>(buffer0, buffer1, buffer2, buffer3, output0, output1,
output2, output3, inner_bases, inner_strides,
inner_loop, inner_last);
}
for (sd::LongType i = 0; i < loopTotal_Tail; i++) {
X current;
const X* buffer0 = &(bufferX[movement.First()]);
indexInnerReductionConstRank<X, Z, ReductionOp, 2>(buffer0, current, outputZ[movement.Second()], inner_bases,
inner_strides, inner_loop, inner_last);
movement.increment();
}
} else if (second_rank == 3) {
LOG_CALLS(2)
for (sd::LongType i = 0; i < loopTotal_K; i++) {
const X* buffer0 = &(bufferX[movement.First()]);
Z* output0 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer1 = &(bufferX[movement.First()]);
Z* output1 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer2 = &(bufferX[movement.First()]);
Z* output2 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer3 = &(bufferX[movement.First()]);
Z* output3 = &(outputZ[movement.Second()]);
movement.increment();
indexInnerReductionConstRankBlock4<X, Z, ReductionOp, 3>(buffer0, buffer1, buffer2, buffer3, output0, output1,
output2, output3, inner_bases, inner_strides,
inner_loop, inner_last);
}
for (sd::LongType i = 0; i < loopTotal_Tail; i++) {
X current;
const X* buffer0 = &(bufferX[movement.First()]);
indexInnerReductionConstRank<X, Z, ReductionOp, 3>(buffer0, current, outputZ[movement.Second()], inner_bases,
inner_strides, inner_loop, inner_last);
movement.increment();
}
} else {
LOG_CALLS(3)
for (sd::LongType i = 0; i < loopTotal; i++) {
X current;
const X* buffer0 = &(bufferX[movement.First()]);
indexInnerReduction<X, Z, ReductionOp>(second_rank, buffer0, current, outputZ[movement.Second()], inner_bases,
inner_strides, 0, inner_loop, inner_last);
movement.increment();
}
}
}
} else {
if (second_rank == 1) {
LOG_CALLS(10)
sd::LongType inner_total = getLength<true>(inner_bases, second_rank);
for (sd::LongType i = 0; i < loopTotal_K; i++) {
const X* buffer0 = &(bufferX[movement.First()]);
Z* output0 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer1 = &(bufferX[movement.First()]);
Z* output1 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer2 = &(bufferX[movement.First()]);
Z* output2 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer3 = &(bufferX[movement.First()]);
Z* output3 = &(outputZ[movement.Second()]);
movement.increment();
indexInnerReductionRank1Block4<X, Z, ReductionOp>(buffer0, buffer1, buffer2, buffer3, output0, output1, output2,
output3, inner_total, inner_stride);
}
if (inner_total >= 2048) {
for (sd::LongType i = 0; i < loopTotal_Tail; i++) {
X current;
const X* buffer0 = &(bufferX[movement.First()]);
indexInnerReductionRank1Block4WithMerge<X, Z, ReductionOp>(buffer0, current, outputZ[movement.Second()],
inner_total, inner_stride);
movement.increment();
}
} else {
for (sd::LongType i = 0; i < loopTotal_Tail; i++) {
X current;
const X* buffer0 = &(bufferX[movement.First()]);
indexInnerReductionRank1<X, Z, ReductionOp>(buffer0, current, outputZ[movement.Second()], inner_total,
inner_stride);
movement.increment();
}
}
} else {
sd::LongType inner_last;
sd::LongType inner_loop = getLength<true>(inner_bases, second_rank, 1, inner_last);
if (second_rank == 2) {
LOG_CALLS(11)
for (sd::LongType i = 0; i < loopTotal_K; i++) {
const X* buffer0 = &(bufferX[movement.First()]);
Z* output0 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer1 = &(bufferX[movement.First()]);
Z* output1 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer2 = &(bufferX[movement.First()]);
Z* output2 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer3 = &(bufferX[movement.First()]);
Z* output3 = &(outputZ[movement.Second()]);
movement.increment();
indexInnerReductionConstRankBlock4<X, Z, ReductionOp, 2>(buffer0, buffer1, buffer2, buffer3, output0, output1,
output2, output3, inner_bases, inner_strides,
inner_loop, inner_last, inner_stride);
}
for (sd::LongType i = 0; i < loopTotal_Tail; i++) {
X current;
const X* buffer0 = &(bufferX[movement.First()]);
indexInnerReductionConstRank<X, Z, ReductionOp, 2>(buffer0, current, outputZ[movement.Second()], inner_bases,
inner_strides, inner_loop, inner_last, inner_stride);
movement.increment();
}
} else if (second_rank == 3) {
LOG_CALLS(12)
for (sd::LongType i = 0; i < loopTotal_K; i++) {
const X* buffer0 = &(bufferX[movement.First()]);
Z* output0 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer1 = &(bufferX[movement.First()]);
Z* output1 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer2 = &(bufferX[movement.First()]);
Z* output2 = &(outputZ[movement.Second()]);
movement.increment();
const X* buffer3 = &(bufferX[movement.First()]);
Z* output3 = &(outputZ[movement.Second()]);
movement.increment();
indexInnerReductionConstRankBlock4<X, Z, ReductionOp, 3>(buffer0, buffer1, buffer2, buffer3, output0, output1,
output2, output3, inner_bases, inner_strides,
inner_loop, inner_last, inner_stride);
}
for (sd::LongType i = 0; i < loopTotal_Tail; i++) {
X current;
const X* buffer0 = &(bufferX[movement.First()]);
indexInnerReductionConstRank<X, Z, ReductionOp, 3>(buffer0, current, outputZ[movement.Second()], inner_bases,
inner_strides, inner_loop, inner_last, inner_stride);
movement.increment();
}
} else {
LOG_CALLS(13)
for (sd::LongType i = 0; i < loopTotal; i++) {
X current;
const X* buffer0 = &(bufferX[movement.First()]);
indexInnerReduction<X, Z, ReductionOp>(second_rank, buffer0, current, outputZ[movement.Second()], inner_bases,
inner_strides, 0, inner_loop, inner_last, inner_stride);
movement.increment();
}
}
}
}
}
template <typename X, typename Z, typename ReductionOp, bool LastIndexFaster = true>
static void argIndexCaseNonScalar(const int& first_rank, const int& output_rank, bool squashed, const int& second_rank,
const sd::LongType*& outer_bases, const sd::LongType* outer_strides,
const sd::LongType* output_strides, const sd::LongType& output_stride,
const sd::LongType*& inner_bases, const sd::LongType* inner_strides, const X* bufferX,
Z* outputZ) {
sd::LongType total = getLength<LastIndexFaster>(outer_bases, first_rank);
sd::LongType inner_stride = true /*LastIndexFaster*/ ? inner_strides[second_rank - 1] : inner_strides[0];
sd::LongType outer_stride = LastIndexFaster ? outer_strides[second_rank - 1] : outer_strides[0];
auto func = [first_rank, output_rank, squashed, outer_bases, outer_strides, output_strides, output_stride,
second_rank, inner_bases, inner_strides, bufferX,
outputZ](uint64_t thread_id, int64_t start, int64_t stop, int64_t increment) -> void {
sd::LongType loopTotal = stop - start;
sd::LongType stride = LastIndexFaster ? outer_strides[first_rank - 1] : outer_strides[0];
if (first_rank == 1) {
if (stride == 1) {
ZipGenericCoordsRank1Stride1 movement;
movement.init(nullptr, nullptr, nullptr, 0, start);
argReductionInnerCases<X, Z, ReductionOp>(movement, loopTotal, second_rank, inner_bases, inner_strides, bufferX,
outputZ);
} else {
ZipGenericCoordsRank1BothStrideN movement;
movement.init(nullptr, &stride, &output_stride, 0, start);
argReductionInnerCases<X, Z, ReductionOp>(movement, loopTotal, second_rank, inner_bases, inner_strides, bufferX,
outputZ);
}
} else if (squashed && first_rank <= output_rank) {
if (first_rank == 2) {
if (output_stride == 1) {
ZipGenericCoordsConstMovementSecondStride1<2, LastIndexFaster> movement;
movement.init(outer_bases, outer_strides, nullptr, first_rank, start);
argReductionInnerCases<X, Z, ReductionOp>(movement, loopTotal, second_rank, inner_bases, inner_strides,
bufferX, outputZ);
} else {
ZipGenericCoordsConstMovementSecondStrideN<2, LastIndexFaster> movement;
movement.init(outer_bases, outer_strides, &output_stride, first_rank, start);
argReductionInnerCases<X, Z, ReductionOp>(movement, loopTotal, second_rank, inner_bases, inner_strides,
bufferX, outputZ);
}
} else if (first_rank == 3) {
if (output_stride == 1) {
ZipGenericCoordsConstMovementSecondStride1<3, LastIndexFaster> movement;
movement.init(outer_bases, outer_strides, nullptr, first_rank, start);
argReductionInnerCases<X, Z, ReductionOp>(movement, loopTotal, second_rank, inner_bases, inner_strides,
bufferX, outputZ);
} else {
ZipGenericCoordsConstMovementSecondStrideN<3, LastIndexFaster> movement;
movement.init(outer_bases, outer_strides, &output_stride, first_rank, start);
argReductionInnerCases<X, Z, ReductionOp>(movement, loopTotal, second_rank, inner_bases, inner_strides,
bufferX, outputZ);
}
} else {
ZipGenericCoordsMovementSecondStrideN<LastIndexFaster> movement;
movement.init(outer_bases, outer_strides, &output_stride, first_rank, start);
argReductionInnerCases<X, Z, ReductionOp>(movement, loopTotal, second_rank, inner_bases, inner_strides, bufferX,
outputZ);
}
} else {
ZipGenericCoordsMovement<LastIndexFaster> movement;
movement.init(outer_bases, outer_strides, output_strides, first_rank, start);
argReductionInnerCases<X, Z, ReductionOp>(movement, loopTotal, second_rank, inner_bases, inner_strides, bufferX,
outputZ);
}
};
#if 0
func(0, 0, total, 1);
#else
//
uint32_t numThreads = sd::Environment::getInstance().maxMasterThreads();
sd::LongType inner_total = getLength<true>(inner_bases, second_rank);
if (total * inner_total <= threadingThreshold) {
numThreads = 1;
} else {
if (inner_stride > outer_stride && total <= 256) {
auto desired = total > 4 ? (total / 4) : 1;
numThreads = numThreads > desired ? desired : numThreads;
}
}
samediff::Threads::parallel_tad(func, 0, total, 1, numThreads);
#endif
}
template <typename X, typename Z, typename ReductionOp>
SD_LIB_HIDDEN void argIndex_(NDArray& input, NDArray& output, const std::vector<LongType>& dimensions) {
char input_order = input.ordering();
bool try_squash_outer = (input_order == output.ordering()) && output.ews() != 0;
const sd::LongType* input_shapeInfo = input.shapeInfo();
const sd::LongType* output_shapeInfo = output.shapeInfo();
const sd::LongType rank = input_shapeInfo[0];
const sd::LongType* input_bases = &(input_shapeInfo[1]);
const sd::LongType* input_strides = &(input_shapeInfo[rank + 1]);
const sd::LongType output_rank = output_shapeInfo[0];
const sd::LongType* output_strides = &(output_shapeInfo[output_rank + 1]);
sd::LongType new_bases[SD_MAX_RANK];
sd::LongType new_strides[SD_MAX_RANK];
sd::LongType first_begin, first_end, second_begin, second_end;
// rePartition into two parts based on the selection
rePartition(input_order, dimensions, rank, input_bases, input_strides, new_bases, new_strides, first_begin, first_end,
second_begin, second_end, try_squash_outer, input_order == 'c');
int first_rank = first_end - first_begin; // the first rank can be 0 for scalar cases
int second_rank = second_end - second_begin;
auto bufferX = input.bufferAsT<X>();
auto outputZ = output.bufferAsT<Z>();
const sd::LongType* outer_bases = &(new_bases[first_begin]);
const sd::LongType* outer_strides = &(new_strides[first_begin]);
const sd::LongType* inner_bases = &(new_bases[second_begin]);
const sd::LongType* inner_strides = &(new_strides[second_begin]);
const sd::LongType output_stride = output.ordering() == 'c' ? output_strides[output_rank - 1] : output_strides[0];
if (input_order == 'c') {
if (first_rank == 0) {
argIndexCase1Scalar<X, Z, ReductionOp>(second_rank, inner_bases, inner_strides, bufferX, outputZ);
} else {
argIndexCaseNonScalar<X, Z, ReductionOp>(first_rank, output_rank, try_squash_outer, second_rank, outer_bases,
outer_strides, output_strides, output_stride, inner_bases, inner_strides,
bufferX, outputZ);
}
} else {
if (first_rank == 0) {
LOG_CALLS(0);
if (second_rank == 1) {
argIndexCase1Scalar<X, Z, ReductionOp, false>(second_rank, inner_bases, inner_strides, bufferX, outputZ);
} else {
argIndexCase1Scalar<X, Z, ReductionOp, true>(second_rank, inner_bases, inner_strides, bufferX, outputZ);
}
} else {
LOG_CALLS(1);
argIndexCaseNonScalar<X, Z, ReductionOp, false>(first_rank, output_rank, try_squash_outer, second_rank,
outer_bases, outer_strides, output_strides, output_stride,
inner_bases, inner_strides, bufferX, outputZ);
}
}
}
template <typename X, typename Z>
struct IndexMax {
static SD_INLINE void update(X& current, Z& currentIndex, const X& candidate, const Z& candidateIndex) {
if (candidate > current) {
current = candidate;
currentIndex = candidateIndex;
}
}
};
template <typename X, typename Z>
struct IndexMin {
static SD_INLINE void update(X& current, Z& currentIndex, const X& candidate, const Z& candidateIndex) {
if (candidate < current) {
current = candidate;
currentIndex = candidateIndex;
}
}
};
template <typename X, typename Z>
struct IndexAbsMax {
static SD_INLINE void update(X& current, Z& currentIndex, const X& candidate, const Z& candidateIndex) {
auto absCandidate = sd::math::sd_abs<X,X>(candidate);
if (absCandidate > current) {
current = absCandidate;
currentIndex = candidateIndex;
}
}
};
template <typename X, typename Z>
struct IndexAbsMin {
static SD_INLINE void update(X& current, Z& currentIndex, const X& candidate, const Z& candidateIndex) {
auto absCandidate = sd::math::sd_abs<X,X>(candidate);
if (absCandidate < current) {
current = absCandidate;
currentIndex = candidateIndex;
}
}
};
//////////////////////////////////////////////////////////////////////////
template <typename X, typename Z>
SD_LIB_HIDDEN void argMax_(NDArray& input, NDArray& output, const std::vector<LongType>& dimensions) {
return argIndex_<X, Z, IndexMax<X, Z>>(input, output, dimensions);
}
template <typename X, typename Z>
SD_LIB_HIDDEN void argMin_(NDArray& input, NDArray& output, const std::vector<LongType>& dimensions) {
return argIndex_<X, Z, IndexMin<X, Z>>(input, output, dimensions);
}
template <typename X, typename Z>
SD_LIB_HIDDEN void argAbsMax_(NDArray& input, NDArray& output, const std::vector<LongType>& dimensions) {
return argIndex_<X, Z, IndexAbsMax<X, Z>>(input, output, dimensions);
}
template <typename X, typename Z>
SD_LIB_HIDDEN void argAbsMin_(NDArray& input, NDArray& output, const std::vector<LongType>& dimensions) {
return argIndex_<X, Z, IndexAbsMin<X, Z>>(input, output, dimensions);
}
} // namespace helpers
} // namespace ops
} // namespace sd