This namespace contains memory type constants representing how fingerprints are stored and searched for in an OEFastFPDatabase object.
The default memory type is
If a CUDA-enabled GPU is available, OEFastFPDatabase
can take advantage of the device for similarity calculations.
When an OEFastFPDatabase is initialized with the
similarity calculations are performed on the device. Initialization incurs a one-time load
penalty, similar to
Fingerprint sizes of multiples of 1024 bits.
At present, multi-GPU support is not available. If there are multiple CUDA
devices on the system, the first compatible device detected will be used.
To enforce the use of a particular device, set the environment
If device memory limits are exceeded or a CUDA-enabled device is not detected this
implementation falls back to
When an OEFastFPDatabase is initialized with
the fingerprints are pre-loaded into memory and the similarity
search performed in-memory when calling the
the fastest search at the expense of load time and the search is limited by
the size of the memory.
Example code in Searching fast fingerprint database section