xqdan edited a comment on pull request #8079:
URL: https://github.com/apache/tvm/pull/8079#issuecomment-851468841
> Hi @xqdan , I am thinking to use relay IR and TE in a hybrid way but that
might beyond this PR. I will approve it and wait to see if @altanh and
@zackcquic have any opinion for your updated changes.
Thanks @ZihengJiang
Do you mean define custom op thru relay ir like relay.add, relay.sub ...,
and then register it?
We are trying to do this, this is an example:
```
def layernorm_register_func():
data = relay.var("input", dtype="float16")
gamma = relay.var("gamma", dtype="float16")
beta = relay.var("beta", dtype="float16")
mean = relay.mean(data, -1, True, False)
sub_mean = relay.subtract(data, mean)
mean_square = relay.multiply(sub_mean, sub_mean)
variance = relay.mean(mean_square, -1, True, False)
z = rel.npu.scalaradd(variance, 1e-5)
zz = relay.sqrt(z)
u = relay.divide(sub_mean, zz)
v = relay.multiply(u, gamma)
w = relay.add(v, beta)
return relay.Function([data, gamma, beta], w).with_attr("Primitive", 1)
```
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