427 lines
8.1 KiB
HTML
427 lines
8.1 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>Miscellaneous</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="HOME"
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TITLE="The openMosix HOWTO"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="the openMosix FAQ"
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HREF="openmosixfaq.html"><LINK
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REL="PREVIOUS"
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TITLE="Resources"
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HREF="x1674.html"><LINK
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REL="NEXT"
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TITLE="PlumpOS FAQ"
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HREF="plumpos-faq.html"></HEAD
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BGCOLOR="#FFFFFF"
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><DIV
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SUMMARY="Header navigation table"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>The openMosix HOWTO: </TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="x1674.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Chapter 19. the openMosix FAQ</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="plumpos-faq.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="AEN1699"
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></A
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>19.7. Miscellaneous</H1
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><DIV
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CLASS="QANDASET"
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><DL
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><DT
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>19.7.1. <A
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HREF="x1699.html#AEN1703"
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> I don't see all my nodes. What's happening?:</A
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></DT
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><DT
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>19.7.2. <A
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HREF="x1699.html#AEN1715"
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> Whats the difference between /etc/mosix.map , /etc/hpc.map , /etc/openmosix.map:</A
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></DT
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><DT
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>19.7.3. <A
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HREF="x1699.html#AEN1720"
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> setpe: the supplied table is well-formatted, but my IP address (127.0.0.1) is not there!:</A
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></DT
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><DT
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>19.7.4. <A
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HREF="x1699.html#AEN1729"
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> I want to install openMosix but I am afraid my machines are too weak for this:</A
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></DT
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><DT
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>19.7.5. <A
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HREF="x1699.html#AEN1735"
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> Under what conditions does VMWare work with openMosix:</A
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></DT
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><DT
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>19.7.6. <A
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HREF="x1699.html#AEN1741"
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> What architectures besides x86 (e.g. SPARC, AXP, PPC...) are supported by openMosix?:</A
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></DT
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><DT
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>19.7.7. <A
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HREF="x1699.html#AEN1746"
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> Is there a parallel make tool for openMosix such as MPmake?:</A
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></DT
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></DL
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><DIV
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CLASS="QANDAENTRY"
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><DIV
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CLASS="QUESTION"
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><P
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><A
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NAME="AEN1703"
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></A
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><B
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>19.7.1. </B
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>
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I don't see all my nodes. What's happening?:</P
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></DIV
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><DIV
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CLASS="ANSWER"
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><P
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><B
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> </B
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>
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When you run 'mosmon', press 't' to see the total number of machines running. Does it warn you that openMosix is not
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running?</P
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><P
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> If it does, then make sure your machine's IP address is included in /etc/openmosix.map. Don't use
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127.0.0.1. If you do, you will
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probably have problems with your DHCP server or your DNS nameserver.</P
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><P
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> If it does not, then see what machines show up. Do you see only your machine?</P
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><P
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> If yes, then your machine is most likely running a firewall and is not letting openMosix through.</P
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><P
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> If not, then the problem is most likely with the machine that doesn't show up.</P
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><P
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> Also: Do you have two NIC cards on a node? If so, you have to edit /etc/hosts to have a line that has the following format
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="PROGRAMLISTING"
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><non-cluster ip> <cluster-hostname>.<cluster-domain> <cluster-hostname></PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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You might also need to set up a routing table, which is an entirely different subject. </P
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><P
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> Maybe you used different kernel-parameters on each machine? Especially if you use the 'Support clusters with a complex
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network topology' option you should take care that you use the same value for the also appearing option 'Maximum
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network-topology complexity support' on each machine.</P
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></DIV
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></DIV
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><DIV
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CLASS="QANDAENTRY"
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><DIV
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CLASS="QUESTION"
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><P
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><A
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NAME="AEN1715"
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></A
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><B
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>19.7.2. </B
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>
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Whats the difference between /etc/mosix.map , /etc/hpc.map , /etc/openmosix.map:</P
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></DIV
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><DIV
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CLASS="ANSWER"
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><P
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><B
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> </B
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>
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They represent three stages of Mosix/openmosix growth. The file /etc/mosix.map is the orginal Mosix map name, The file
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/etc/hpc.map was an early openMosix map name (and 'hpc' is still used for the /proc files in openMosix). The current map
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name is /etc/openmosix.map.</P
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></DIV
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></DIV
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><DIV
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CLASS="QANDAENTRY"
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><DIV
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CLASS="QUESTION"
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><P
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><A
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NAME="AEN1720"
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></A
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><B
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>19.7.3. </B
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>
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setpe: the supplied table is well-formatted, but my IP address (127.0.0.1) is not there!:</P
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></DIV
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><DIV
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CLASS="ANSWER"
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><P
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><B
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> </B
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>
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You'll need to modify your /etc/hosts file. On Red Hat machines mostly the /etc/hosts file includes a line like
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="PROGRAMLISTING"
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>127.0.0.1 hostname.domain.com localhost</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></P
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><P
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> If hostname.domain.com has an IP address of 192.168.10.250, and if you looked up hostname.domain.com you might get 127.0.0.1
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as an answer.</P
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><P
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> However, if you put
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="PROGRAMLISTING"
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>192.168.10.250 hostname.domain.com
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127.0.0.1 localhost</PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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in your /etc/hosts, openMosix won't complain.</P
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></DIV
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></DIV
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><DIV
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CLASS="QANDAENTRY"
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><DIV
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CLASS="QUESTION"
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><P
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><A
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NAME="AEN1729"
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></A
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><B
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>19.7.4. </B
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>
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I want to install openMosix but I am afraid my machines are too weak for this:</P
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></DIV
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><DIV
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CLASS="ANSWER"
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><P
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><B
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> </B
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>A machine is never too weak: I have three P200s (64MB each) and two P166s (one with 48MB and one with 192MB).
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Two of them
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are on 10Base-T and the other three on 100Base-T. Even with these antiquated machines and "heterogenous" network, I get
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perfect load balancing to run simulation programs that I write in Perl. (Look at our
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ProgramToTestACluster"). Don't be held back
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by the fact your machines are old. To us this is a nice feature of openMosix: you can add newer machines
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to an existing
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cluster as they become available. And you do not need to have all identical machines. That's fantastic!</P
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><P
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> However, a 100Base-T network is recommended!
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Contributed by Charles Nadeau.</P
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></DIV
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></DIV
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><DIV
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CLASS="QANDAENTRY"
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><DIV
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CLASS="QUESTION"
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><P
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><A
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NAME="AEN1735"
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></A
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><B
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>19.7.5. </B
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>
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Under what conditions does VMWare work with openMosix:</P
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></DIV
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><DIV
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CLASS="ANSWER"
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><P
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><B
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> </B
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>
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If you intend to run VMWare under openMosix so that openMosix would load-balance several instances of that (yes, that
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works). But, if you want to run openMosix in several VMWare instances and let these instances load balance (that fails).</P
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><P
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> The first case works. The latter case does not work because VMware has a bug in its Pentium emulation that makes VMware
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crash (not openMosix, but the VMware binary) on the first migration.</P
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></DIV
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></DIV
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><DIV
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CLASS="QANDAENTRY"
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><DIV
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CLASS="QUESTION"
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><P
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><A
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NAME="AEN1741"
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></A
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><B
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>19.7.6. </B
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>
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What architectures besides x86 (e.g. SPARC, AXP, PPC...) are supported by openMosix?:</P
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></DIV
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><DIV
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CLASS="ANSWER"
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><P
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><B
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> </B
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>
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Only IA-32 is currently supported. The port of openMosix to the Intel(r) Itanium(tm) IA-64 Processor Family is complete.
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Project plans for openMosix' second year include porting to the 64-bit AMD Opteron(tm) processor.</P
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></DIV
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></DIV
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><DIV
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CLASS="QANDAENTRY"
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><DIV
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CLASS="QUESTION"
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><P
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><A
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NAME="AEN1746"
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></A
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><B
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>19.7.7. </B
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>
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Is there a parallel make tool for openMosix such as MPmake?:</P
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></DIV
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><DIV
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CLASS="ANSWER"
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><P
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><B
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> </B
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> You can use regular gcc make. just use make -j #, where the #
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represents how many child proccesses to spawn.</P
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></DIV
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></DIV
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></DIV
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></DIV
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HREF="x1674.html"
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>Prev</A
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>Next</A
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>Resources</TD
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