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PreMulSumOp

atomr_accel_cuda::kernel::collective::custom_op

Struct PreMulSumOp 

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pub struct PreMulSumOp<T: NcclReduceSupported> { /* private fields */ }
Expand description

PreMulSum custom reduce op: AllReduce-equivalent with a per-tensor scalar premultiplier living in device memory. Construct via PreMulSumOp::new; destroy via PreMulSumOp::destroy before the comm goes away.

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impl<T: NcclReduceSupported> PreMulSumOp<T>

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pub fn new(comm: &Comm, scalar: GpuRef<T>) -> Result<Self, GpuError>

Create a PreMulSum op. The scalar buffer holds one element (per-tensor scaling) at construction time.

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pub fn handle(&self) -> ncclRedOp_t

Raw NCCL op handle — pass to FFI calls that take a custom ncclRedOp_t.

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pub fn destroy(self) -> Result<(), GpuError>

Destroy the underlying NCCL op. Idempotent.

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impl<T> Freeze for PreMulSumOp<T>

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impl<T> !RefUnwindSafe for PreMulSumOp<T>

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impl<T> !Sync for PreMulSumOp<T>

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impl<T> Unpin for PreMulSumOp<T>
where T: Unpin,

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impl<T> UnsafeUnpin for PreMulSumOp<T>

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impl<T> !UnwindSafe for PreMulSumOp<T>

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impl<T> Any for T
where T: 'static + ?Sized,

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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type Error = <U as TryFrom<T>>::Error

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
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