Path: csiph.com!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: comp.arch Subject: Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It? Date: Wed, 28 May 2025 14:16:31 -0400 Organization: A noiseless patient Spider Lines: 13 Message-ID: References: <1012965$1u7m$1@gal.iecc.com> <1012b5p$23l9s$1@dont-email.me> <1012esr$4ne$1@gal.iecc.com> <1013get$23l9t$5@dont-email.me> <2025May27.103408@mips.complang.tuwien.ac.at> <1014ii3$23l9s$4@dont-email.me> <2025May27.181954@mips.complang.tuwien.ac.at> <10161je$23l9t$6@dont-email.me> <2025May28.094741@mips.complang.tuwien.ac.at> <1017b4j$334ga$1@dont-email.me> <1017d4b$334ga$3@dont-email.me> <1017gb2$3b6lq$1@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain Injection-Date: Wed, 28 May 2025 20:16:32 +0200 (CEST) Injection-Info: dont-email.me; posting-host="7a4247569e155e56d70d3a76306fe4d4"; logging-data="3545488"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/Cmo3OOsqvOI6eY6hb7LLqbQzmwIu3yFQ=" User-Agent: Gnus/5.13 (Gnus v5.13) Cancel-Lock: sha1:+MtDDW3ken9zbEABMRd5hMgJTyI= sha1:AdMlTu6uIEbQ25+VFwXTfIgJTq8= Xref: csiph.com comp.arch:111874 Stephen Fuld [2025-05-28 10:15:14] wrote: > On 5/28/2025 9:52 AM, Stefan Monnier wrote: >> If they appear as two LUNs, then the drive can't do the interleaving, >> only the host can. > Of course the drive can. In general, you have no idea of the mapping > between what the host calls a LUN/LBA (logical block address), and the > physical cylinder and head on the drive. Right, but what would be the point of exposing two LUNs if the drive does the interleaving? Wouldn't it be "all cost, no benefit"? Stefan