TGEMV_ACC

指令示意图

TGEMV_ACC tile operation

简介

带显式累加器输入/输出 Tile 的 GEMV。

数学语义

除非另有说明,语义在有效区域上定义,目标相关的行为标记为实现定义。

汇编语法

PTO-AS 形式:参见 PTO-AS 规范

AS Level 1(SSA)

%c = pto.tgemv %a, %b : (!pto.tile<...>, !pto.tile<...>) -> !pto.tile<...>
%c_out = pto.tgemv.acc %c_in, %a, %b : (!pto.tile<...>, !pto.tile<...>, !pto.tile<...>) -> !pto.tile<...>
%c = pto.tgemv.bias %a, %b, %bias : (!pto.tile<...>, !pto.tile<...>, !pto.tile<...>) -> !pto.tile<...>

AS Level 2(DPS)

pto.tgemv ins(%a, %b : !pto.tile_buf<...>, !pto.tile_buf<...>) outs(%c : !pto.tile_buf<...>)
pto.tgemv.acc ins(%c_in, %a, %b : !pto.tile_buf<...>, !pto.tile_buf<...>, !pto.tile_buf<...>) outs(%c_out : !pto.tile_buf<...>)
pto.tgemv.bias ins(%a, %b, %bias : !pto.tile_buf<...>, !pto.tile_buf<...>, !pto.tile_buf<...>) outs(%c : !pto.tile_buf<...>)

C++ 内建接口

声明于 include/pto/common/pto_instr.hpp

template <typename TileRes, typename TileLeft, typename TileRight, typename... WaitEvents>
PTO_INST RecordEvent TGEMV_ACC(TileRes &cOutMatrix, TileRes &cInMatrix, TileLeft &aMatrix, TileRight &bMatrix, WaitEvents &... events);

template <AccPhase Phase, typename TileRes, typename TileLeft, typename TileRight, typename... WaitEvents>
PTO_INST RecordEvent TGEMV_ACC(TileRes &cOutMatrix, TileRes &cInMatrix, TileLeft &aMatrix, TileRight &bMatrix, WaitEvents &... events);

约束

类型/布局/位置/形状的合法性取决于后端;将实现特定的说明视为该后端的规范。

示例

参见 docs/isa/docs/coding/tutorials/ 中的相关示例。

汇编示例(ASM)

自动模式

# 自动模式:由编译器/运行时负责资源放置与调度。
%c = pto.tgemv %a, %b : (!pto.tile<...>, !pto.tile<...>) -> !pto.tile<...>

手动模式

# 手动模式:先显式绑定资源,再发射指令。
# 可选(当该指令包含 tile 操作数时):
# pto.tassign %arg0, @tile(0x1000)
# pto.tassign %arg1, @tile(0x2000)
%c = pto.tgemv %a, %b : (!pto.tile<...>, !pto.tile<...>) -> !pto.tile<...>

PTO 汇编形式

%c = pto.tgemv %a, %b : (!pto.tile<...>, !pto.tile<...>) -> !pto.tile<...>
# AS Level 2 (DPS)
pto.tgemv ins(%a, %b : !pto.tile_buf<...>, !pto.tile_buf<...>) outs(%c : !pto.tile_buf<...>)