Berkeley CSUA MOTD:Entry 52220
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2024/11/26 [General] UID:1000 Activity:popular
11/26   

2008/12/10-16 [Computer/HW/CPU, Computer/HW/Drives] UID:52220 Activity:moderate
12/9    Another idea for the CSUA that lets you spend money and maybe get some
    cool toys. Instead of buying a beefy server (like say, a massive server
    with 20 386DX processors), buy a few cheap machines (like the ones
    mentioned below) that have good disks and work on failover / load
    balancing. A netscaler or other piece of hardware is complete overkill,
    but maybe hacking an OpenBSD box could do the trick. The idea is that
    this project:
    - Lets you learn a lot about failover/redundancy/scalability, which
      are real-world, relevant skills and also interesting. The fake
      CSUA head-hunter would be all over these real skills.
    - Increases the reliability/performance of soda / csua machines.
    - Gives a justification for buying new hardware.
    - Give a cause for the CSUA.
    Good idea: ..
    Bad idea:
        \_ 386DX is cool: http://csua.com/?entry=18447
        \_ Too late, the server has already been ordered. We already have cheap
           machines, and we're note exactly getting pounded on the web, nor do
           we have sites to scale up. We already have stuff on FreeBSD as well
           as backup LDAP. The point of failure is keg and the fact that we have
           16 small disks. We've also ordered new disks to rectify that. I gat
           16 small disks. We've also ordered new disks to rectify that. I got
           the idea that you'd rather we work around a lack of resources than
           exploit more than we think we need...or at least, that's what I keep
           hearing. I don't think that's really going to help. --t
           as backup LDAP. The point of failure is keg and the fact that we
           have 16 small disks. We've also ordered new disks to rectify that.
           I got the idea that you'd rather we work around a lack of resources
           than exploit more than we think we need...or at least, that's what
           I keep hearing. I don't think that's really going to help. --t
           \_ Good decision. Especially good to just make a decision and
              start fixing things, instead of debating endlessly.
           \_ I like what you did more than my proposal! Stability, not speed,
              should be the first factor. Good disks and stable builds are
              two of the biggest contributors to stability. Do you still hit
              up alums for donations? -op
              \_ We were going to hit up alumni for donations for the server
                 before we got it, but the stability was (literally) getting us
                 down and so we decided to get the new server. Steven, last I
                 heard, plans on installing ESXi (the free one) on it setting
                 it up. It should be in place by mid-to-late-January, possibly
                 heard, plans on installing ESXi (the free one) on it setting it
                 up. It should be in place by mid-to-late-January, possibly
                 earlier. --t
2024/11/26 [General] UID:1000 Activity:popular
11/26   

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Cache (4117 bytes)
csua.com/?entry=18447
I have a "386(TM)DX Microprocessor Programmer's Reference Manual" and a "80386 Programmer's Reference Manual", but they list different cycle counts for the same instruction. "REP MOVS" is 8+4*CX cycles on the 386DX but 5+4*CX on the 80386? html BTW, it was the 486SX that didn't have a co-processor. the DX to distinguish it from the later, lamer 386SX which is a 386 crippled with a 16bit data bus (as opposed to 32 on the DX). To confuse matters further, there was a 486DX (normal) and 486SX but the difference there was that the former had a built-in maths coprocessor and the latter did not. No one uses 386's anymore and the timings on modern CPUs are far different. what makes the 018 better, what does that number refer too? Obviously, the shorter the channel length, the less resistance there exists in the pull up and pull down network of a CMOS circuit. Changes in process technology also effects other factors like the reduction of gate oxide thickness which increases the gate capacitance per area of transistor and, therefore, increases the gain as a result of applying gate voltage. Also, among many other things, the threshold voltage changes. Take 105 or 141 and they'll tell you all about it (but by all means, avoid Neureuther). Smaller = less heat from lower resistence but harder to make. Less heat = can run faster before dying from heat problems. We've suggested top-of-the-line hardware and been told we don't need that much power. So I'd like to ask -- what exactly do you think the CSUA is supposed to _be_? They suggested you use the \_ No one said VMs weren't needed. Is it possible that we might be able to hit Intel up for donated/partially donated (reduced price) Core i7 Xeons when they come out? Who would be a good person to contact about something like that? We're of course willing to put out for them - perhaps we'll tattoo an Intel logo on toulouse if that's what they want :-p -- steven ... plans to cut up to 6,000 jobs, or 18 percent of its global work force, as sales of its high-end computer servers have collapsed. The drastic move announced Friday highlights Sun's desperation to cut costs and survive as an independent company. source=rss (online stalker) \_ boring \_ I wonder if Sold Intel Secrets To AMD guy has a soda account. html New Terms 10 New Links 11 Quick Reference 12 Did You Know? Models after the 56 8086 are often referred to by the last three digits (for example, the 286, 57 386, and 58 486 ). Many of the microprocessors come in different varieties that 59 run at various 60 clock rates. The 80486 61 architecture, for example, 62 supports clock rates of from 33 to 66 63 MHz Because Intel discovered that it couldn't trademark its CPU numbers, it shifted to a naming scheme, starting with the Pentium processors. Intel's latest and sixth-generation chip is called the 64 Pentium Pro. All Intel microprocessors are 65 backward compatible, which means that they can run 66 programs written for a less powerful 67 processor. The 80386, for example, can run programs written for the 8086, 8088, and 80286. The 80386 and later models, however, offer special programming 68 features not available on previous models. The common architecture behind all Intel microprocessors is known as the x86 architecture. Until the late 80s, Intel was essentially the only producer of PC microprocessors. Increasingly, however, Intel is facing competition from other manufacturers who produce "Intel- 70 compatible " 71 chips. These chips support the Intel 72 instruction set and are often less expensive than Intel chips. Two of the leading manufacturers of Intel-compatible chips are 73 Cyrix and 74 AMD It includes links to in-depth articles, productivity enhancements and programming tricks, Intel secrets, Intel data sheets and programming and motherboard manuals. Additionally, there are links to a software showcase, developer's area, customer support, and newsgroup forums. Covers every major x86 processor from the first Intel 8088 used in the original IBM PC to the latest released hot chips. Search by brand or type to find the best price across 100s of stores!