aclnnBidirectionLSTMV2
支持的产品型号
- Atlas 推理系列产品。
接口原型
每个算子分为两段式接口,必须先调用“aclnnBidirectionLSTMV2GetWorkspaceSize”接口获取入参并根据流程计算所需workspace大小,再调用“aclnnBidirectionLSTMV2”接口执行计算。
aclnnStatus aclnnBidirectionLSTMV2GetWorkspaceSize(const aclTensor *x, const aclTensor *initH, const aclTensor *initC, const aclTensor *wIh, const aclTensor *wHh, const aclTensor *bIhOptional, const aclTensor *bHhOptional, const aclTensor *wIhReverseOptional, const aclTensor *wHhReverseOptional, const aclTensor *bIhReverseOptional, const aclTensor *bHhReverseOptional, const aclTensor *batchSizeOptional, int64_t numLayers, bool isbias, bool batchFirst, bool bidirection, bool packed, const aclTensor *y, const aclTensor *outputH, const aclTensor *outputC, uint64_t *workspaceSize, aclOpExecutor **executor);
aclnnStatus aclnnBidirectionLSTMV2(void *workspace, uint64_t workspaceSize, aclOpExecutor *executor, aclrtStream stream);
功能描述
- 算子功能:LSTM(Long Short-Term Memory,长短时记忆)网络是一种特殊的循环神经网络(RNN)模型。
- 计算公式:
- :LSTM单元的输入向量。
- :遗忘门激活向量。
- :输入门、更新门激活向量。
- :输出门激活向量。
- :隐藏状态向量,也称为LSTM单元的输出向量。
- :cell输入激活向量。
- :cell状态向量。
- :训练中需要学习的权重矩阵和偏置向量参数。
aclnnBidirectionLSTMV2GetWorkspaceSize
参数说明:
- x(aclTensor*,计算输入):Device侧的aclTensor,输入,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。当参数 packed 为 false 时,shape支持三维(time_step, batch_size, input_size);当参数 packed 为 true 时,shape支持二维(total_batch_size, input_size)。
- initH(aclTensor*,计算输入):Device侧的aclTensor,初始化hidden状态,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。shape支持三维(num_layers, batch_size, hidden_size)或者当bidirection为True时(2 * num_layers, batch_size, hidden_size)。
- initC(aclTensor*,计算输入):Device侧的aclTensor,初始化cell状态,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。shape支持三维(num_layers, batch_size, hidden_size)或者当bidirection为True时(2 * num_layers, batch_size, hidden_size)。
- wIh(aclTensor*,计算输入):Device侧的aclTensor,input-hidden权重,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。shape支持二维(4 * hidden_size, input_size)。
- wHh(aclTensor*,计算输入):Device侧的aclTensor,hidden-hidden权重,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。shape支持二维(4 * hidden_size, hidden_size)。
- bIhOptional(aclTensor*,计算输入):Device侧的aclTensor,input-hidden偏移,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。shape支持一维(4 * hidden_size)。
- bHhOptional(aclTensor*,计算输入):Device侧的aclTensor,hidden-hidden偏移,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。shape支持一维(4 * hidden_size)。
- wIhReverseOptional(aclTensor*,计算输入):Device侧的aclTensor,逆向input-hidden权重,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。shape支持二维(4 * hidden_size, input_size)。
- wHhReverseOptional(aclTensor*,计算输入):Device侧的aclTensor,逆向hidden-hidden权重,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。shape支持二维(4 * hidden_size, input_size)。
- bIhReverseOptional(aclTensor*,计算输入):Device侧的aclTensor,逆向hidden-hidden偏移,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。shape支持一维(4 * hidden_size)。
- bHhReverseOptional(aclTensor*,计算输入):Device侧的aclTensor,逆向hidden-hidden偏移,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。shape支持一维(4 * hidden_size)。
- batchSizeOptional(aclTensor*,计算输入):Device侧的aclTensor,每轮迭代实际参与计算的 batch_size,数据类型支持INT。只支持连续Tensor,数据格式支持ND。shape支持一维(time_step)。
- numLayers(int64_t,计算输入):Host侧的整型,当前只支持1,类型支持int64_t。
- isbias(bool,计算输入):Host侧的bool,表示是否有bias,类型支持bool。
- batchFirst(bool,计算输入):Host侧的bool,表示batch是否是第一维,当前只支持false,类型支持bool。
- bidirection(bool,计算输入):Host侧的bool,表示是否是双向,类型支持bool。
- packed(bool,计算输入):Host侧的bool,表示输入 x 是否压缩,仅在batchSizeOptional不为空时生效,类型支持bool。
- y(aclTensor*,计算输出):Device侧的aclTensor,输出,数据类型支持FLOAT16。只支持连续Tensor,数据格式支持ND。bidirection 为 false 时,当参数 packed 为 false ,shape支持三维(time_step, batch_size, input_size);当参数 packed 为 true ,shape支持二维(total_batch_size, input_size)。或者 bidirection 为 true 时,当参数 packed 为 false ,shape支持三维(time_step, batch_size, 2 * input_size);当参数 packed 为 true ,shape支持二维(total_batch_size, 2 * input_size)。
- outputH(aclTensor*,计算输出):Device侧的aclTensor,最终hidden状态,数据类型支持FLOAT16,只支持连续Tensor,数据格式支持ND。shape支持三维(num_layers, batch_size, hidden_size)或者当bidirection为True时(2 * num_layers, batch_size, hidden_size)。
- outputC(aclTensor*,计算输出):Device侧的aclTensor,最终cell状态,数据类型支持FLOAT16,只支持连续Tensor,数据格式支持ND。shape支持三维(num_layers, batch_size, hidden_size)或者当bidirection为True时(2 * num_layers, batch_size, hidden_size)。
- workspaceSize(uint64_t *,出参):返回需要在Device侧申请的workspace大小。
- executor(aclOpExecutor *,出参):返回op执行器,包含了算子计算流程。
返回值:
aclnnStatus: 返回状态码,具体参见aclnn返回码。
第一段接口完成入参校验,出现以下场景时报错:
返回161001 (ACLNN_ERR_PARAM_NULLPTR): 如果传入参数是必选输入,输出或者必选属性,且是空指针。
返回161002(ACLNN_ERR_PARAM_INVALID):如果传入参数类型为 aclTensor 且其数据类型不在支持的范围之内。
返回561002(ACLNN_ERR_INNER_TILING_ERROR):如果传入参数类型为 aclTensor 且其shape与上述参数说明不符。
aclnnBidirectionLSTMV2
参数说明:
- workspace(void *,入参):在Device侧申请的workspace内存地址。
- workspaceSize(uint64_t,入参):在Device侧申请的workspace大小,由第一段接口aclnnBidirectionLSTMV2GetWorkspaceSize获取。
- executor(aclOpExecutor *,入参):op执行器,包含了算子计算流程。
- stream(aclrtStream ,入参):指定执行任务的AscendCL Stream流。
返回值:
aclnnStatus: 返回状态码,具体参见aclnn返回码。
约束与限制
无
调用示例
示例代码如下,仅供参考,具体编译和执行过程请参考编译与运行样例。
#include <iostream>
#include <vector>
#include "acl/acl.h"
#include "aclnnop/aclnn_bidirection_lstm.h"
#define CHECK_RET(cond, return_expr) \
do { \
if (!(cond)) { \
return_expr; \
} \
} while (0)
#define LOG_PRINT(message, ...) \
do { \
printf(message, ##__VA_ARGS__); \
} while (0)
int64_t GetShapeSize(const std::vector<int64_t>& shape) {
int64_t shapeSize = 1;
for (auto i : shape) {
shapeSize *= i;
}
return shapeSize;
}
void PrintOutResult(std::vector<int64_t> &shape, void** deviceAddr) {
auto size = GetShapeSize(shape);
std::vector<float> resultData(size, 0);
auto ret = aclrtMemcpy(resultData.data(), resultData.size() * sizeof(resultData[0]),
*deviceAddr, size * sizeof(resultData[0]), ACL_MEMCPY_DEVICE_TO_HOST);
CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("copy result from device to host failed. ERROR: %d\n", ret); return);
for (int64_t i = 0; i < size; i++) {
LOG_PRINT("mean result[%ld] is: %f\n", i, resultData[i]);
}
}
int Init(int32_t deviceId, aclrtStream* stream) {
// 固定写法,AscendCL初始化
auto ret = aclInit(nullptr);
CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclInit failed. ERROR: %d\n", ret); return ret);
ret = aclrtSetDevice(deviceId);
CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtSetDevice failed. ERROR: %d\n", ret); return ret);
ret = aclrtCreateStream(stream);
CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtCreateStream failed. ERROR: %d\n", ret); return ret);
return 0;
}
template <typename T>
int CreateAclTensor(const std::vector<T>& hostData, const std::vector<int64_t>& shape, void** deviceAddr,
aclDataType dataType, aclTensor** tensor) {
auto size = GetShapeSize(shape) * sizeof(T);
// 调用aclrtMalloc申请device侧内存
auto ret = aclrtMalloc(deviceAddr, size, ACL_MEM_MALLOC_HUGE_FIRST);
CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtMalloc failed. ERROR: %d\n", ret); return ret);
// 调用aclrtMemcpy将host侧数据复制到device侧内存上
ret = aclrtMemcpy(*deviceAddr, size, hostData.data(), size, ACL_MEMCPY_HOST_TO_DEVICE);
CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtMemcpy failed. ERROR: %d\n", ret); return ret);
// 计算连续tensor的strides
std::vector<int64_t> strides(shape.size(), 1);
for (int64_t i = shape.size() - 2; i >= 0; i--) {
strides[i] = shape[i + 1] * strides[i + 1];
}
// 调用aclCreateTensor接口创建aclTensor
*tensor = aclCreateTensor(shape.data(), shape.size(), dataType, strides.data(), 0, aclFormat::ACL_FORMAT_ND,
shape.data(), shape.size(), *deviceAddr);
return 0;
}
int main() {
// 1. (固定写法)device/stream初始化,参考AscendCL对外接口列表
// 根据自己的实际device填写deviceId
int32_t deviceId = 0;
aclrtStream stream;
auto ret = Init(deviceId, &stream);
CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("Init acl failed. ERROR: %d\n", ret); return ret);
// 2. 构造输入与输出,需要根据API的接口自定义构造
int time_step = 2;
int batch_size = 32;
int input_size = 32;
int hidden_size = 32;
int64_t numLayers = 1;
bool isbias = true;
bool batchFirst = false;
bool bidirection = true;
bool packed = false;
std::vector<int64_t> selfShape = {time_step, batch_size, input_size};
std::vector<int64_t> weightHIShape = {4 * hidden_size, input_size};
std::vector<int64_t> weightHHShape = {4 * hidden_size, hidden_size};
std::vector<int64_t> initHShape = {2, batch_size, hidden_size};
std::vector<int64_t> initCShape = {2, batch_size, hidden_size};
std::vector<int64_t> biasHIShape = {4 * hidden_size};
std::vector<int64_t> biasHHShape = {4 * hidden_size};
std::vector<int64_t> outShape = {time_step, batch_size, 2 * hidden_size};
std::vector<int64_t> outHShape = {2, batch_size, hidden_size};
std::vector<int64_t> outCShape = {2, batch_size, hidden_size};
void* selfDeviceAddr = nullptr;
void* weightHIDeviceAddr = nullptr;
void* weightHHDeviceAddr = nullptr;
void* weightHIReverseDeviceAddr = nullptr;
void* weightHHReverseDeviceAddr = nullptr;
void* initHDeviceAddr = nullptr;
void* initCDeviceAddr = nullptr;
void* biasHIDeviceAddr = nullptr;
void* biasHHDeviceAddr = nullptr;
void* biasHIReverseDeviceAddr = nullptr;
void* biasHHReverseDeviceAddr = nullptr;
void* outDeviceAddr = nullptr;
void* outHDeviceAddr = nullptr;
void* outCDeviceAddr = nullptr;
aclTensor* self = nullptr;
aclTensor* weightHI = nullptr;
aclTensor* weightHH = nullptr;
aclTensor* weightHIReverse = nullptr;
aclTensor* weightHHReverse = nullptr;
aclTensor* biasHI = nullptr;
aclTensor* biasHH = nullptr;
aclTensor* biasHIReverse = nullptr;
aclTensor* biasHHReverse = nullptr;
aclTensor* batchSize = nullptr;
aclTensor* initH = nullptr;
aclTensor* initC = nullptr;
aclTensor* out = nullptr;
aclTensor* outH = nullptr;
aclTensor* outC = nullptr;
std::vector<uint16_t> selfHostData(GetShapeSize(selfShape));
std::vector<uint16_t> weightHIHostData(GetShapeSize(weightHIShape));
std::vector<uint16_t> weightHHHostData(GetShapeSize(weightHHShape));
std::vector<uint16_t> biasHIHostData(GetShapeSize(biasHIShape));
std::vector<uint16_t> biasHHHostData(GetShapeSize(biasHHShape));
std::vector<uint16_t> initHHostData(GetShapeSize(initHShape));
std::vector<uint16_t> initCHostData(GetShapeSize(initCShape));
std::vector<uint16_t> outHostData(GetShapeSize(outShape));
std::vector<uint16_t> outHHostData(GetShapeSize(outHShape));
std::vector<uint16_t> outCHostData(GetShapeSize(outCShape));
ret = CreateAclTensor(selfHostData, selfShape, &selfDeviceAddr, aclDataType::ACL_FLOAT16, &self);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(weightHIHostData, weightHIShape, &weightHIDeviceAddr, aclDataType::ACL_FLOAT16, &weightHI);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(weightHHHostData, weightHHShape, &weightHHDeviceAddr, aclDataType::ACL_FLOAT16, &weightHH);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(initHHostData, initHShape, &initHDeviceAddr, aclDataType::ACL_FLOAT16, &initH);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(initCHostData, initCShape, &initCDeviceAddr, aclDataType::ACL_FLOAT16, &initC);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(biasHIHostData, biasHIShape, &biasHIDeviceAddr, aclDataType::ACL_FLOAT16, &biasHI);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(biasHHHostData, biasHHShape, &biasHHDeviceAddr, aclDataType::ACL_FLOAT16, &biasHH);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(weightHIHostData, weightHIShape, &weightHIReverseDeviceAddr, aclDataType::ACL_FLOAT16, &weightHIReverse);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(weightHHHostData, weightHHShape, &weightHHReverseDeviceAddr, aclDataType::ACL_FLOAT16, &weightHHReverse);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(biasHIHostData, biasHIShape, &biasHIReverseDeviceAddr, aclDataType::ACL_FLOAT16, &biasHIReverse);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(biasHHHostData, biasHHShape, &biasHHReverseDeviceAddr, aclDataType::ACL_FLOAT16, &biasHHReverse);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(outHostData, outShape, &outDeviceAddr, aclDataType::ACL_FLOAT16, &out);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(outHHostData, outHShape, &outHDeviceAddr, aclDataType::ACL_FLOAT16, &outH);
CHECK_RET(ret == ACL_SUCCESS, return ret);
ret = CreateAclTensor(outCHostData, outCShape, &outCDeviceAddr, aclDataType::ACL_FLOAT16, &outC);
CHECK_RET(ret == ACL_SUCCESS, return ret);
// 3. 调用CANN算子库API,需要修改为具体的Api名称
uint64_t workspaceSize = 0;
aclOpExecutor* executor;
// 调用aclnnBidirectionLSTMV2第一段接口
ret = aclnnBidirectionLSTMV2GetWorkspaceSize(self, initH, initC, weightHI, weightHH,
biasHI, biasHH, weightHIReverse, weightHHReverse, biasHIReverse, biasHHReverse,
batchSize,
numLayers, isbias, batchFirst, bidirection, packed,
out, outH, outC,
&workspaceSize, &executor);
CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclnnBidirectionLSTMV2GetWorkspaceSize failed. ERROR: %d\n", ret); return ret);
// 根据第一段接口计算出的workspaceSize申请device内存
void* workspaceAddr = nullptr;
if (workspaceSize > 0) {
ret = aclrtMalloc(&workspaceAddr, workspaceSize, ACL_MEM_MALLOC_HUGE_FIRST);
CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("allocate workspace failed. ERROR: %d\n", ret); return ret);
}
// 调用aclnnBidirectionLSTMV2第二段接口
ret = aclnnBidirectionLSTMV2(workspaceAddr, workspaceSize, executor, stream);
CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclnnBidirectionLSTMV2 failed. ERROR: %d\n", ret); return ret);
// 4. (固定写法)同步等待任务执行结束
ret = aclrtSynchronizeStream(stream);
CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtSynchronizeStream failed. ERROR: %d\n", ret); return ret);
// 5. 获取输出的值,将device侧内存上的结果复制至host侧,需要根据具体API的接口定义修改
PrintOutResult(outShape, &outDeviceAddr);
PrintOutResult(outHShape, &outHDeviceAddr);
PrintOutResult(outCShape, &outCDeviceAddr);
// 6. 释放aclTensor和aclScalar,需要根据具体API的接口定义修改
aclDestroyTensor(self);
aclDestroyTensor(weightHI);
aclDestroyTensor(weightHH);
aclDestroyTensor(initH);
aclDestroyTensor(initC);
aclDestroyTensor(biasHI);
aclDestroyTensor(biasHH);
aclDestroyTensor(weightHIReverse);
aclDestroyTensor(weightHHReverse);
aclDestroyTensor(biasHIReverse);
aclDestroyTensor(biasHHReverse);
aclDestroyTensor(out);
aclDestroyTensor(outH);
aclDestroyTensor(outC);
// 7. 释放device资源
aclrtFree(selfDeviceAddr);
aclrtFree(weightHIDeviceAddr);
aclrtFree(weightHHDeviceAddr);
aclrtFree(initHDeviceAddr);
aclrtFree(initCDeviceAddr);
aclrtFree(biasHIDeviceAddr);
aclrtFree(biasHHDeviceAddr);
aclrtFree(weightHIReverseDeviceAddr);
aclrtFree(weightHHReverseDeviceAddr);
aclrtFree(biasHIReverseDeviceAddr);
aclrtFree(biasHHReverseDeviceAddr);
aclrtFree(outDeviceAddr);
aclrtFree(outHDeviceAddr);
aclrtFree(outCDeviceAddr);
if (workspaceSize > 0) {
aclrtFree(workspaceAddr);
}
aclrtDestroyStream(stream);
aclrtResetDevice(deviceId);
aclFinalize();
return 0;
}