IndexBitDomain

enum cuquantum.bindings.custatevecEx.IndexBitDomain(value)

Specifies a domain that an index bit belongs to. Each wire of a state vector is mapped to an index bit, and every index bit belongs to one of the following domains that determines how operations on the wire are executed: - Local: the index bit is local to a sub state vector. Operations are executed without inter-device or inter-process communication. - Migration: the index bit distinguishes sub state vectors placed on host versus device memory. Operations require host- device migration. - Global device: the index bit distinguishes sub state vectors held by different devices or processes. Operations require data transfer routed by in-process GPUDirect P2P, inter-process GPUDirect P2P, or a communicator depending on the configuration. The applicable index bit domains for each state vector distribution model are described in the documentation of custatevecExConfigureStateVectorSingleDevice(), custatevecExConfigureStateVectorMultiDevice(), and custatevecExConfigureStateVectorMultiProcess(). This enum is used by custatevecExStateVectorAddWires() to specify the domain of index bits assigned to the newly added wires.

See custatevecExIndexBitDomain_t.

Member Type:

int

Valid values are as follows:

LOCAL = <IndexBitDomain.LOCAL: 0>

MIGRATION = <IndexBitDomain.MIGRATION: 1>

GLOBAL_DEVICE = <IndexBitDomain.GLOBAL_DEVICE: 2>