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faiss::gpu::StandardGpuResources Class Reference

`#include <StandardGpuResources.h>`

Inheritance diagram for faiss::gpu::StandardGpuResources:

## Public Member Functions
void | noTempMemory ()
void | setTempMemory (size_t size)
void | setTempMemoryFraction (float fraction)
void | setPinnedMemory (size_t size)
void | setDefaultStream (int device, cudaStream_t stream)
| Called to change the stream for work ordering.
void | setDefaultNullStreamAllDevices ()
void | initializeForDevice (int device) override
| Internal system calls.
cublasHandle_t | getBlasHandle (int device) override
| Returns the cuBLAS handle that we use for the given device.
cudaStream_t | getDefaultStream (int device) override
std::vector< cudaStream_t > | getAlternateStreams (int device) override
| Returns the set of alternative streams that we use for the given device.
DeviceMemory & | getMemoryManager (int device) override
| Returns the temporary memory manager for the given device.
std::pair< void *, size_t > | getPinnedMemory () override
| Returns the available CPU pinned memory buffer.
cudaStream_t | getAsyncCopyStream (int device) override
| Returns the stream on which we perform async CPU <-> GPU copies.
Public Member Functions inherited from faiss::gpu::GpuResources
cublasHandle_t | getBlasHandleCurrentDevice ()
| Calls getBlasHandle with the current device.
cudaStream_t | getDefaultStreamCurrentDevice ()
| Calls getDefaultStream with the current device.
void | syncDefaultStream (int device)
void | syncDefaultStreamCurrentDevice ()
| Calls syncDefaultStream for the current device.
std::vector< cudaStream_t > | getAlternateStreamsCurrentDevice ()
| Calls getAlternateStreams for the current device.
DeviceMemory & | getMemoryManagerCurrentDevice ()
| Calls getMemoryManager for the current device.
cudaStream_t | getAsyncCopyStreamCurrentDevice ()
| Calls getAsyncCopyStream for the current device.

## Detailed Description

Default implementation of GpuResources that allocates a cuBLAS stream and 2 streams for use, as well as temporary memory

Definition at line 23 of file StandardGpuResources.h.

## Member Function Documentation

cudaStream_t faiss::gpu::StandardGpuResources::getDefaultStream | ( | int | device | ) |
| override virtual

Returns the stream that we order all computation on for the given device

Implements faiss::gpu::GpuResources.

Definition at line 211 of file StandardGpuResources.cpp.

void faiss::gpu::StandardGpuResources::noTempMemory | ( |  | ) |

Disable allocation of temporary memory; all temporary memory requests will call cudaMalloc / cudaFree at the point of use

Definition at line 76 of file StandardGpuResources.cpp.

void faiss::gpu::StandardGpuResources::setDefaultNullStreamAllDevices | ( |  | ) |

Called to change the work ordering streams to the null stream for all devices

Definition at line 115 of file StandardGpuResources.cpp.

void faiss::gpu::StandardGpuResources::setPinnedMemory | ( | size_t | size | ) |

Set amount of pinned memory to allocate, for async GPU <-> CPU transfers

Definition at line 94 of file StandardGpuResources.cpp.

void faiss::gpu::StandardGpuResources::setTempMemory | ( | size_t | size | ) |

Specify that we wish to use a certain fixed size of memory on all devices as temporary memory

Definition at line 81 of file StandardGpuResources.cpp.

void faiss::gpu::StandardGpuResources::setTempMemoryFraction | ( | float | fraction | ) |

Specify that we wish to use a certain fraction of memory on all devices as temporary memory

Definition at line 87 of file StandardGpuResources.cpp.

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

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