proof_system::PolynomialStoreCache Class Reference

#include <polynomial_store_cache.hpp>

Public Member Functions
	PolynomialStoreCache (size_t max_cache_size_)
void	put (std::string const &key, Polynomial &&value)
Polynomial	get (std::string const &key)

Detailed Description

A cache that wraps an underlying external store. It favours holding the largest polynomials in it's cache up to max_cache_size_ polynomials. This saves on many expensive copies of large amounts of memory to the external store. Smaller polynomials get swapped out, but they're also much cheaper to read/write. The default ctor sets the cache size to 70. In combination with the slab allocator, this brings us to about 4GB mem usage for 512k circuits. In tests using just the external store increased proof time from by about 50%. This pretty much recoups all losses.

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

• src/barretenberg/proof_system/polynomial_store/polynomial_store_cache.hpp
• src/barretenberg/proof_system/polynomial_store/polynomial_store_cache.cpp