TREMS

Tile Operation Diagram

TREMS tile operation

Introduction

Elementwise remainder with a scalar: %.

Math Interpretation

For each element (i, j) in the valid region:

\[\mathrm{dst}_{i,j} = \mathrm{src}_{i,j} \bmod \mathrm{scalar}\]

Assembly Syntax

PTO-AS form: see PTO-AS Specification.

Synchronous form:

%dst = trems %src, %scalar : !pto.tile<...>, f32

IR Level 1 (SSA)

%dst = pto.trems %src, %scalar : (!pto.tile<...>, dtype) -> !pto.tile<...>

IR Level 2 (DPS)

pto.trems ins(%src, %scalar : !pto.tile_buf<...>, dtype) outs(%dst : !pto.tile_buf<...>)

C++ Intrinsic

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

template <typename TileDataDst, typename TileDataSrc, typename... WaitEvents>
PTO_INST RecordEvent TREMS(TileDataDst &dst, TileDataSrc &src, typename TileDataSrc::DType scalar,
                           WaitEvents &... events);

Constraints

  • Division-by-zero behavior is target-defined; the CPU simulator asserts in debug builds.
  • The op iterates over dst.GetValidRow() / dst.GetValidCol().

Examples

#include <pto/pto-inst.hpp>

using namespace pto;

void example() {
  using TileT = Tile<TileType::Vec, float, 16, 16>;
  TileT x, out;
  TREMS(out, x, 3.0f);
}

ASM Form Examples

Auto Mode

# Auto mode: compiler/runtime-managed placement and scheduling.
%dst = pto.trems %src, %scalar : (!pto.tile<...>, dtype) -> !pto.tile<...>

Manual Mode

# Manual mode: bind resources explicitly before issuing the instruction.
# Optional for tile operands:
# pto.tassign %arg0, @tile(0x1000)
# pto.tassign %arg1, @tile(0x2000)
%dst = pto.trems %src, %scalar : (!pto.tile<...>, dtype) -> !pto.tile<...>

PTO Assembly Form

%dst = trems %src, %scalar : !pto.tile<...>, f32
# IR Level 2 (DPS)
pto.trems ins(%src, %scalar : !pto.tile_buf<...>, dtype) outs(%dst : !pto.tile_buf<...>)