vt::collective::reduce::detail namespace

Namespaces

namespace tags

Classes

struct ReduceIDImpl

Sent in all reduction messages to identify the scope and reduction stamp so it gets merged with the right data.

struct ReduceScope

A unique scope for reduction operations, identified by the obj group proxy, virtual proxy, group ID, or component ID.

template<typename T>

struct ReduceScopeHolder

Holds instances of reducers indexed by the reduction scope bits.

struct TagPair

Holds a pair of tags, which can be used to identify a reduction instance.

Typedefs

using ReduceStamp = std::variant<StrongTag, TagPair, StrongSeq, StrongUserID, StrongEpoch>

Reduction stamp bits to identify a specific instance of a reduction.

using UserIDType = uint64_t

using StrongTag = Strong<TagType, no_tag, tags::TagTag>

using StrongSeq = Strong<SequentialIDType, no_seq_id, tags::SeqTag>

using StrongObjGroup = Strong<ObjGroupProxyType, no_obj_group, tags::ObjGroupTag>

using StrongVrtProxy = Strong<VirtualProxyType, no_vrt_proxy, tags::VrtProxyTag>

using StrongGroup = Strong<GroupType, no_group, tags::GroupTag>

using StrongCom = Strong<ComponentIDType, u32empty, tags::ComponentTag>

using StrongUserID = Strong<UserIDType, u64empty, tags::UserIDTag>

using StrongEpoch = EpochType

Functions

template<typename T, typename... Args>

auto makeScope(Args && ... args) -> ReduceScope

Create a new reduction scope.

auto stringizeStamp(ReduceStamp const& stamp) -> std::string

Stringize a ReduceStamp.

Typedef documentation

Function documentation