TCOLEXPANDDIV

Tile Operation Diagram

Introduction

Column-wise broadcast divide: divide each element of src0 by a per-column scalar vector src1.

Math Interpretation

Let R = dst.GetValidRow() and C = dst.GetValidCol(). Let s_j be the per-column scalar taken from src1 (one value per column).

For 0 <= i < R and 0 <= j < C:

$${\mathrm{d}\mathrm{s}\mathrm{t}}_{i,j}={\mathrm{s}\mathrm{r}\mathrm{c}0}_{i,j}/s_j$$

Assembly Syntax

PTO-AS form: see PTO-AS Specification.

Synchronous form:

%dst = tcolexpanddiv %src0, %src1 : !pto.tile<...>, !pto.tile<...> -> !pto.tile<...>

AS Level 1 (SSA)

%dst = pto.tcolexpanddiv %src0, %src1 : !pto.tile<...>, !pto.tile<...> -> !pto.tile<...>

AS Level 2 (DPS)

pto.tcolexpanddiv ins(%src0, %src1 : !pto.tile_buf<...>, !pto.tile_buf<...>) outs(%dst : !pto.tile_buf<...>)

C++ Intrinsic

Declared in include/pto/common/pto_instr.hpp:

template <typename TileDataDst, typename TileDataSrc0, typename TileDataSrc1, typename... WaitEvents>
PTO_INST RecordEvent TCOLEXPANDDIV(TileDataDst &dst, TileDataSrc0 &src0, TileDataSrc1 &src1, WaitEvents &... events);

Constraints

• TileDataDst::DType, TileDataSrc1::DType must be one of: half, float.
• Tile shape/layout constraint (compile-time): TileDataDst::isRowMajor.
• src1 is expected to provide one scalar per column (i.e., its valid shape must cover C values).
• Exact layout/fractal constraints are target-specific; see backend headers under include/pto/npu/*/TColExpand*.hpp.

Examples

See related examples in docs/isa/ and docs/coding/tutorials/.

ASM Form Examples

Auto Mode

# Auto mode: compiler/runtime-managed placement and scheduling.
%dst = pto.tcolexpanddiv %src0, %src1 : !pto.tile<...>, !pto.tile<...> -> !pto.tile<...>

Manual Mode

# Manual mode: resources must be bound explicitly before issuing the instruction.
# Optional for tile operands:
# pto.tassign %arg0, @tile(0x1000)
# pto.tassign %arg1, @tile(0x2000)
%dst = pto.tcolexpanddiv %src0, %src1 : !pto.tile<...>, !pto.tile<...> -> !pto.tile<...>

PTO Assembly Form

%dst = tcolexpanddiv %src0, %src1 : !pto.tile<...>, !pto.tile<...> -> !pto.tile<...>
# AS Level 2 (DPS)
pto.tcolexpanddiv ins(%src0, %src1 : !pto.tile_buf<...>, !pto.tile_buf<...>) outs(%dst : !pto.tile_buf<...>)