Contents

Concat

General

Concat operation concatenates \(N\) tensors over axis (here designated \(C\)) and is defined as (the variable names follow the standard Naming Conventions):

\[\dst(\overline{ou}, c, \overline{in}) = \src_i(\overline{ou}, c', \overline{in}),\]

where \(c = C_1 + .. + C_{i-1} {}_{} + c'\).

Operation attributes

Attribute Name

Description

Value Type

Supported Values

Required or Optional

axis

Specifies dimension along which concatenation happens.

s64

A s64 value in the range of [-r, r-1] where r = rank(src)

Required

Execution arguments

The inputs and outputs must be provided according to below index order when constructing an operation.

Inputs

Index

Argument Name

Required or Optional

0

src_i

Required

Note

At least one input tensor is required. Data types and ranks of all input tensors should match. The dimensions of all input tensors should be the same except for the dimension specified by axis attribute.

Outputs

Index

Argument Name

Required or Optional

0

dst

Required

Supported data types

Concat operation supports the following data type combinations.

Src_i

Dst

f32

f32

f16

f16

bf16

bf16
ClampBackward Convolution