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faiss::gpu::IndexProxy Class Reference

`#include <IndexProxy.h>`

Inheritance diagram for faiss::gpu::IndexProxy:

## Public Member Functions

void | addIndex (faiss::Index *index)
void | removeIndex (faiss::Index *index)
void | runOnIndex (std::function< void(faiss::Index *)> f)
void | reset () override
void | train (Index::idx_t n, const float *x) override
void | add (Index::idx_t n, const float *x) override
void | search (faiss::Index::idx_t n, const float *x, faiss::Index::idx_t k, float *distances, faiss::Index::idx_t *labels) const override
void | reconstruct (idx_t, float *v) const override
| reconstructs from the first index
void | set_typename () override
int | count () const
faiss::Index * | at (int i)
const faiss::Index * | at (int i) const
Public Member Functions inherited from faiss::Index
| Index (idx_t d=0, MetricType metric=METRIC_INNER_PRODUCT)
virtual void | add_with_ids (idx_t n, const float *x, const long *xids)
virtual void | range_search (idx_t n, const float *x, float radius, RangeSearchResult *result) const
void | assign (idx_t n, const float *x, idx_t *labels, idx_t k=1)
virtual long | remove_ids (const IDSelector &sel)
virtual void | reconstruct_n (idx_t i0, idx_t ni, float *recons) const
void | compute_residual (const float *x, float *residual, idx_t key) const
void | display () const
virtual std::string | get_typename () const

## Public Attributes

bool | own_fields
Public Attributes inherited from faiss::Index
std::string | index_typename
int | d
| vector dimension
idx_t | ntotal
| total nb of indexed vectors
bool | verbose
| verbosity level
bool | is_trained
| set if the Index does not require training, or if training is done already
MetricType | metric_type
| type of metric this index uses for search

## Additional Inherited Members

Public Types inherited from faiss::Index
typedef long | idx_t
| all indices are this type

## Detailed Description

Takes individual faiss::Index instances, and splits queries for sending to each Index instance, and joins the results together when done. Each index is managed by a separate CPU thread.

Definition at line 25 of file IndexProxy.h.

## Member Function Documentation

void faiss::gpu::IndexProxy::add | ( | Index::idx_t | n,
|  | const float * | x
| ) |  |

overridevirtual

faiss::Index API All indices receive the same call

Implements faiss::Index.

Definition at line 112 of file IndexProxy.cpp.

void faiss::gpu::IndexProxy::addIndex | ( | faiss::Index * | index | ) |

Adds an index that is managed by ourselves. WARNING: once an index is added to this proxy, it becomes unsafe to touch it from any other thread than that on which is managing it, until we are shut down. Use runOnIndex to perform work on it instead.

Definition at line 33 of file IndexProxy.cpp.

void faiss::gpu::IndexProxy::removeIndex | ( | faiss::Index * | index | ) |

Remove an index that is managed by ourselves. This will flush all pending work on that index, and then shut down its managing thread, and will remove the index.

Definition at line 68 of file IndexProxy.cpp.

void faiss::gpu::IndexProxy::reset | ( |  | ) |

overridevirtual

faiss::Index API All indices receive the same call

Implements faiss::Index.

Definition at line 101 of file IndexProxy.cpp.

void faiss::gpu::IndexProxy::runOnIndex | ( | std::function< void(faiss::Index *)> | f | ) |

Run a function on all indices, in the thread that the index is managed in.

Definition at line 86 of file IndexProxy.cpp.

void faiss::gpu::IndexProxy::search | ( | faiss::Index::idx_t | n,
|  | const float * | x,
|  | faiss::Index::idx_t | k,
|  | float * | distances,
|  | faiss::Index::idx_t * | labels
| ) |  | const

overridevirtual

faiss::Index API Query is partitioned into a slice for each sub-index split by ceil(n / #indices) for our sub-indices

Implements faiss::Index.

Definition at line 125 of file IndexProxy.cpp.

void faiss::gpu::IndexProxy::train | ( | Index::idx_t | n,
|  | const float * | x
| ) |  |

overridevirtual

faiss::Index API All indices receive the same call

Reimplemented from faiss::Index.

Definition at line 107 of file IndexProxy.cpp.

The documentation for this class was generated from the following files:

- /data/users/matthijs/github_faiss/faiss/gpu/IndexProxy.h
- /data/users/matthijs/github_faiss/faiss/gpu/IndexProxy.cpp