Published at: 01:02 pm - Tuesday February 25 2020
Update (Aug 2021) : billymg wrote a a very spiffy node explorer based on this program. Update (May 2020) : Support for “peers” command. ‘Watchglass’ is a simple program for monitoring the health of a constellation of Bitcoin nodes. The user interface is in the form of an IRC bot, based on my August 2019 […]
Published at: 01:01 pm - Tuesday January 14 2020
This article is part of a series of hands-on tutorials introducing FFA, or the Finite Field Arithmetic library. FFA differs from the typical “Open Sores” abomination, in that — rather than trusting the author blindly with their lives — prospective users are expected to read and fully understand every single line. In exactly the same […]
Published at: 03:01 pm - Saturday January 11 2020
This article is part of a series of hands-on tutorials introducing FFA, or the Finite Field Arithmetic library. FFA differs from the typical “Open Sores” abomination, in that — rather than trusting the author blindly with their lives — prospective users are expected to read and fully understand every single line. In exactly the same […]
Published at: 03:01 pm - Tuesday January 07 2020
This article is part of a series of hands-on tutorials introducing FFA, or the Finite Field Arithmetic library. FFA differs from the typical “Open Sores” abomination, in that — rather than trusting the author blindly with their lives — prospective users are expected to read and fully understand every single line. In exactly the same […]
Published at: 03:07 pm - Sunday July 28 2019
This article is a continuation of the M series. The vpatch given below entirely re-implements the TLB (MMU) of M to use SIMD instructions from the AMD64 SSE2 set. Whereas previously TLB entries were kept in memory and searched iteratively, now we keep the Tags (3 byte each) sliced into three XMM registers, and search […]
Published at: 12:07 pm - Thursday July 25 2019
This article is a continuation of the M series. The vpatch given below speeds up the execution of M by approximately 30% (as measured by the Dhrystone benchmark.) It implements separate single-entry TLB caches for reads and writes; a set of fastpath exception handlers; and several other minor optimizations. You will need: A Keccak-based VTron […]
Published at: 09:07 pm - Monday July 22 2019
Current Table of Contents: M is a MIPS-III system emulator, written purely in AMD64 assembly to make optimal use of commonplace iron. As discussed previously. M will run lightly-modified Linux kernels with strict logical isolation vs. the host (and vs. any other instances of itself.) That is, it in fact does exactly what e.g. QEMU […]
Published at: 04:04 pm - Monday April 15 2019
This article is part of a series of hands-on tutorials introducing FFA, or the Finite Field Arithmetic library. FFA differs from the typical “Open Sores” abomination, in that — rather than trusting the author blindly with their lives — prospective users are expected to read and fully understand every single line. In exactly the same […]
Published at: 09:03 pm - Friday March 29 2019
This article is part of a series of hands-on tutorials introducing FFA, or the Finite Field Arithmetic library. FFA differs from the typical “Open Sores” abomination, in that — rather than trusting the author blindly with their lives — prospective users are expected to read and fully understand every single line. In exactly the same […]
Published at: 04:03 pm - Sunday March 17 2019
This article is part of a series of hands-on tutorials introducing FFA, or the Finite Field Arithmetic library. FFA differs from the typical “Open Sores” abomination, in that — rather than trusting the author blindly with their lives — prospective users are expected to read and fully understand every single line. In exactly the same […]