# 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

De

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

Argu

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

Argu

0

dst

Required

## Supported data types¶

Concat operation supports the following data type combinations.

Src

D

f32

f32

bf16

bf16

f16

f16