Steven Barclay 998a0e0aaf Further Equihash optimisation: partial parallelisation ... Run the initial XorTable fillup in 'Equihash::computeAllHashes' in parallel, using a parallel stream, to get an easy speed up. (The solver spends about half its time computing BLAKE2b hashes before iteratively building tables of partial collisions using 'Equihash::findCollisions'.) As part of this, replace the use of 'java.nio.ByteBuffer' array wrapping in 'Utilities::(bytesToIntsBE|intsToBytesBE)' with manual for-loops, as profiling reveals an unexpected bottleneck in the former when used in a multithreaded setting. (Lock contention somewhere in unsafe code?)		2021-12-07 09:35:43 +01:00
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src	Further Equihash optimisation: partial parallelisation	2021-12-07 09:35:43 +01:00