Article View: comp.arch
Article #22936Re: Any resources on VLIW?
From: John Ahlstrom
Date: Thu, 20 Jul 2006 19:20
Date: Thu, 20 Jul 2006 19:20
27 lines
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2805 bytes
Anne & Lynn Wheeler wrote: > Brian Inglis <Brian.Inglis@SystematicSW.Invalid> writes: -- snip snip > > concurrent with VAMPS effort was "ECPS" for 370 138&148. ECPS did some > more stuff like VMA on the 158 (direct supervisor state instruction > execution) ... but it also identified parts of the hypervisor kernel > and moved that kernel code into microcode. the issue on 138&148 > machines was that there was an avg. of 10:1 microcode instructions > executed for every 370 instruction. Much of the kernel code moved to > microcode on straigh 1:1 basis resulting in ten times performance > speed up. old posting identifying specific kernel code segments for > migrating into microcode. > http://www.garlic.com/~lynn/94.html#21 370 ECPS VM microcode assist -- snip snip Lynn: Can you point us to any information on 138/148 microprogramming and microarchitecture? Examples of the 10:1 microcode to 370 instruction expansion would be fascinating. JKA -- Smart is thinking you are right. Wise is knowing you might be wrong.
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X-Google-Thread: 102b75,f548de17dfef9254 X-Google-Thread: fd705,63480d605f6719c8 X-Google-Thread: 103c88,63480d605f6719c8 X-Google-Attributes: gid102b75,gidfd705,gid103c88,public X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news2.google.com!news4.google.com!border1.nntp.dca.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!local01.nntp.dca.giganews.com!nntp.comcast.com!news.comcast.com.POSTED!not-for-mail NNTP-Posting-Date: Thu, 20 Jul 2006 14:20:40 -0500 Message-ID: <44BFD78D.8000605@comcast.net> Date: Thu, 20 Jul 2006 12:20:45 -0700 From: John Ahlstrom <ahlstromjk@comcast.net> User-Agent: Thunderbird 1.5.0.4 (Windows/20060516) MIME-Version: 1.0 Newsgroups: comp.arch,alt.folklore.computers,bit.listserv.vmesa-l Subject: Re: Any resources on VLIW? References: <1151666293.605459.83960@b68g2000cwa.googlegroups.com> <44a52f38.1192603@news.usenetzone.com> <1151948654.338490.242010@h44g2000cwa.googlegroups.com> <44b94bed.328920@news.usenetzone.com> <44b95f5e$1@news.meer.net> <44bada0c.15581701@news.usenetzone.com> <ea8ub2pduj6cfaepf3fu2vtfa27kq4onjk@4ax.com> <m3ac74p0at.fsf@lhwlinux.garlic.com> In-Reply-To: <m3ac74p0at.fsf@lhwlinux.garlic.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Lines: 27 NNTP-Posting-Host: 24.6.147.111 X-Trace: sv3-amiMVS8hl0qkUuuRu3E78PSMFRYQUQD+RQsXEHM6Mk10CCLJwd+XvHxdW1do8IgnrHUBwtVtjulaj18!/tciQuT95QRPXdyl9SItK5VdY5UXmgChd99aWJMtPyI4XimtRYu7ate9EiKkR3JIL0QDnQ== X-Complaints-To: abuse@comcast.net X-DMCA-Complaints-To: dmca@comcast.net X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.32