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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: "Paul A. Clayton" <paaronclayton@gmail.com> Newsgroups: comp.arch Subject: Re: Continuations Date: Sat, 27 Jul 2024 20:06:11 -0400 Organization: A noiseless patient Spider Lines: 12 Message-ID: <v845ob$3kaup$1@dont-email.me> References: <v6tbki$3g9rg$1@dont-email.me> <47689j5gbdg2runh3t7oq2thodmfkalno6@4ax.com> <v71vqu$gomv$9@dont-email.me> <116d9j5651mtjmq4bkjaheuf0pgpu6p0m8@4ax.com> <f8c6c5b5863ecfc1ad45bb415f0d2b49@www.novabbs.org> <7u7e9j5dthm94vb2vdsugngjf1cafhu2i4@4ax.com> <0f7b4deb1761f4c485d1dc3b21eb7cb3@www.novabbs.org> <v78soj$1tn73$1@dont-email.me> <4bbc6af7baab612635eef0de4847ba5b@www.novabbs.org> <v792kn$1v70t$1@dont-email.me> <ef12aa647464a3ebe3bd208c13a3c40c@www.novabbs.org> <tD7mO.11270$Z2s2.1953@fx05.iad> <2bdee5008840a5584e9de557a5dfd88d@www.novabbs.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Sun, 28 Jul 2024 03:09:32 +0200 (CEST) Injection-Info: dont-email.me; posting-host="dc428a5f16f626673ad5c967f5230e77"; logging-data="3812313"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18hqCzx0rU+aBd3GJcUEZ9gpqCNQtlfj4Q=" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.0 Cancel-Lock: sha1:pYU2q83iw6jAk/lR6mplR+qZ9cU= In-Reply-To: <2bdee5008840a5584e9de557a5dfd88d@www.novabbs.org> Bytes: 2015 On 7/18/24 12:40 PM, MitchAlsup1 wrote: [snip] > Over the 20 cycles the multiplier is doing Goldschmidt iterations, > there > are only 3 slots where a different instruction could sneak through. Since initial iterations could (I think) use reduced precision, it might also be possible to use part of the multiplier for a different lower precision multiplication. (ISTR, an AMD implementation used different precision for different steps.)