tarry.singh/Radix
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Replace silu implementation with stablehlo.logistic for higher precision, move logistic logic into sigmoid and alias logistic to sigmoid (breaking change).

Browse Source
This commit is contained in:
Tarry Singh 2023-05-01 10:40:50 +00:00
parent 021111d07d
commit fefd84b1bb
1 changed files with 5 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
zml/tensor.zig
View File

@ -293,13 +293,6 @@ pub const Tensor = struct {
return _result(self._shape.withDtype(.bool), op.result(0));
}
/// Returns a Tensor containing the element-wise logistic operation on the input Tensor.
pub fn logistic(self: Tensor) Tensor {
const loc = self.getContext().mlirCtx().location(@src());
const op = dialect.stablehlo.logistic(self.getContext().mlirCtx(), self.value(), loc);
return _result(self._shape, op.result(0));
}
/// Returns a Tensor containing the element-wise number of bits set in the input Tensor.
pub fn popcnt(self: Tensor) Tensor {
meta.assert(self.dtype().isInteger(), "popcnt expects tensor type to be an integer, got {}", .{self.dtype()});
@ -1190,11 +1183,13 @@ pub const Tensor = struct {
/// Returns a Tensor containing the sigmoid function applied to each element of the input Tensor.
pub fn sigmoid(self: Tensor) Tensor {
// until the metal plugin supports `stablehlo.logistics`, implement in the way JAX does it
const one = Tensor.constant(&.{}, self.dtype().one()).broadcast(self._shape, &.{});
return one.div(one.add(self.negate().exp()));
const loc = self.getContext().mlirCtx().location(@src());
const op = dialect.stablehlo.logistic(self.getContext().mlirCtx(), self.value(), loc);
return _result(self._shape, op.result(0));
}
pub const logistic = sigmoid;
/// Returns a Tensor containing the ReLU activation function applied to each element of the input Tensor.
pub fn relu(self: Tensor) Tensor {
return self.maximum(Tensor.constant(self.dims(), self.dtype().zero()));