Base64 encoding and decoding at almost the speed of a memory copy · HackerPapers discussions

Base64 encoding and decoding at almost the speed of a memory copy — HN submission

Sun, 17 May 2026 06:28:41 GMT

Base64 encoding and decoding at almost the speed of a memory copy

3 points; 1 discussion reply on HN. Paper and source history. A submission is not an endorsement.

Base64 encoding and decoding at almost the speed of a memory copy — HN submission

Sun, 27 Apr 2025 04:13:02 GMT

Base64 encoding and decoding at almost the speed of a memory copy (2019)

4 points; 1 discussion reply on HN. Paper and source history. A submission is not an endorsement.

Base64 encoding and decoding at almost the speed of a memory copy — mentioned by jasonzemos

Thu, 06 Aug 2020 11:53:07 GMT

> AVX2 had downclocking issues when it first appeared too - but these were rapidly mitigated and forgotten. Speaking of Daniel Lemire, he recently published a paper https://arxiv.org/abs/1910.05109 mentioning downclocking in section 4: > On some Intel processors, AVX-512 instructions are subject to downclocking: whenever AVX-512 instructions are executed, the processor lowers its frequency. We do not observe any downclocking on our processor, nor did we find any Intel documentation referencing downclocking for this processor. To test for downclocking, we used the avx-turbo benchmarking tool…

Paper and discussion history. A mention is not an endorsement.

Base64 encoding and decoding at almost the speed of a memory copy — HN submission

Wed, 06 Nov 2019 05:00:56 GMT

Base64 encoding and decoding at almost the speed of a memory copy

344 points; 115 discussion replies on HN. Paper and source history. A submission is not an endorsement.

Base64 encoding and decoding at almost the speed of a memory copy — HN submission

Tue, 05 Nov 2019 20:41:54 GMT

Base64 encoding and decoding at almost the speed of a memory copy

5 points; 0 discussion replies on HN. Paper and source history. A submission is not an endorsement.