Re:Ubuntu annoyances?
on
Ubuntu Kung Fu
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· Score: 2, Informative
Personally, my nomination would be still having to edit fstab as root to permanently mount a network share. Mapping a network drive is dead simple in Windows. It should be just as easy on Ubuntu.
- Does it provide DHCP for "internal networks"? No.
Yes it does.
- Does it let you run guest programs directly on the host desktop? No.
Yes it does.
- Will it automatically change the resolution of the guest desktop based on the window size? Nope.
Yes it does.
And who cares about RAM usage. You are running a computer inside a computer--what do you expect! Buy more RAM, 1GB of ram isn't enough to seriously run virtual machines. 4GB is minimum.
XP running inside VirtualBox on my 1.5GB Athlon64 X2 running Ubuntu takes 15 seconds to boot and runs flawlessly. I can even run it side-by-side with OpenSolaris without touching the swap partition (depending on what I do on the guests systems; the SunStudio compilers are very memory-hungry).
Mine is ex-NTL, but I don't see why they would block some of their connections and not others. But then, I don't really see why they would block ANY of their connections..
if we are solving a linear system, we need A to be square
No. You can "solve" an under-determined system (i.e., reduce it). You can also "solve" an over-determined system via a least-squares fit. Both are common problems in scientific computing.
And for the majority of users, for whom ipv6 is at best useless and at worst an annoyance, blacklist the ipv6 module. E.g. in Debian / Ubuntu add the line
blacklist ipv6
to/etc/modprobe.d/blacklist
While you're at it, you might also want to blacklist pcspkr (get rid of annoying console beeps), lp, parport and parport_pc (parallel port printer) and joydev (unless you have a joystick of course).
I've done all of this in Ubuntu for a computer with 256MiB of RAM to recover as much memory as possible. Guess what, the gain is negligible, in terms of both memory and boot time. Upgrading to Intrepid helped much more than blacklisting modules.
Hmm, no, the summary does not say that at all. Maybe you misread the '500'?;)
if the summary is correct than most of the top 6 computers run faster than that
Maybe you misread the 'most'? 8)
Whatever the exact number, the summary clearly says that there are at least 2 supercomputers achieving more than 1 Petaflop, which is over twice Seti's performance. So your statement about there being no faster supercomputer than Seti is still incorrect.
It does seem peculiar. I don't know what lead to this decision, but we're using SLES for desktops instead of SLED. I don't think it's wrong, just a bit peculiar.
We use Suse Linux Enterprise Server 10 at work. The GTK libraries are too old to build Firefox 3, and SLES 11 is not coming out for a few months.. I guess our local admin will have to seriously consider ditching SLES, its general obsolescence is becoming a problem lately.
But in any case, I can't understand the decision of ending support for Firefox 2 just 6 months after having released Firefox 3, this is too short for some distributions to respond.
I went into the trouble of trying to run this under Linux. the supplied batch files didn't work - it was missing files due to bad paths. the java application required a HUGE meddling around, choosing the settings, creating tests...
All works fine under my Ubuntu box with the latest Wine and Java JRE runtime (which I happened to have installed).
But whatever, I agree with you: who on Earth decided that testers should even need to use the command line? Why didn't they just embed the Java into a webpage?
And it's not only that the sample will be reduced, it could be that the results come out biased -- what if it turns out that geeks tend to be tone-deaf, or another unfortunate correlation like that?
what is the compelling reason for choosing Linux over OpenSolaris or, say, PC-BSD, on a laptop?
Frequency scaling support for the processor to save power? Hardware support in general? I tried OpenSolaris 2008.5 on my laptop, and this was the main issue.
The userspace is a bit archaic - it's classic System V, which makes even a GNU userland look nice.
I was interested in trying OpenSolaris for this very reason, since I wanted to see e.g. if I could build Makefiles that worked with GNU make, Sun make and BSD make, and that type of stuff. But to my surprise the userland tools I tried were all GNU.
To me Fortran 77 is equally laughable. Starting right from the punchcard-oriented fixed format of the source files. It feels old and uncomfortable, to say the least.
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Personally, my nomination would be still having to edit fstab as root to permanently mount a network share. Mapping a network drive is dead simple in Windows. It should be just as easy on Ubuntu.
You may want to suggest this improvement or report the behaviour as a bug.
- Does it provide DHCP for "internal networks"? No.
Yes it does.
- Does it let you run guest programs directly on the host desktop? No.
Yes it does.
- Will it automatically change the resolution of the guest desktop based on the window size? Nope.
Yes it does.
And who cares about RAM usage. You are running a computer inside a computer--what do you expect! Buy more RAM, 1GB of ram isn't enough to seriously run virtual machines. 4GB is minimum.
XP running inside VirtualBox on my 1.5GB Athlon64 X2 running Ubuntu takes 15 seconds to boot and runs flawlessly. I can even run it side-by-side with OpenSolaris without touching the swap partition (depending on what I do on the guests systems; the SunStudio compilers are very memory-hungry).
No, it says Windows guests, and Windows, Linux or Mac OS X hosts.
Correction:
Hmm.. what's with the the idle section and the quote tags?
Mine is ex-NTL, but I don't see why they would block some of their connections and not others. But then, I don't really see why they would block ANY of their connections..
I just get a blank page, at Virgin they didn't bother to fake a 404 error.
Great link, the third one, I didn't know there was https access to Wikipedia. The second link also displays fine.
BTW, the offending image is viewable in Amazon.
Heh.. I am behind the filter. Check here to see if you are. Damn Virgin Media..
if we are solving a linear system, we need A to be square
No. You can "solve" an under-determined system (i.e., reduce it). You can also "solve" an over-determined system via a least-squares fit. Both are common problems in scientific computing.
And for the majority of users, for whom ipv6 is at best useless and at worst an annoyance, blacklist the ipv6 module. E.g. in Debian / Ubuntu add the line
blacklist ipv6
to /etc/modprobe.d/blacklist
While you're at it, you might also want to blacklist pcspkr (get rid of annoying console beeps), lp, parport and parport_pc (parallel port printer) and joydev (unless you have a joystick of course).
I've done all of this in Ubuntu for a computer with 256MiB of RAM to recover as much memory as possible. Guess what, the gain is negligible, in terms of both memory and boot time. Upgrading to Intrepid helped much more than blacklisting modules.
So not a useful piece of advice, IMHO. YMMV.
Anyone else got a kernel oops when running the liveCD under VirtualBox?
10: do
20: Eat, Drink, and be merry, for tomorrow we die!
30: Heh, an aging brain implies you are still alive.
40: enddo
Sheesh.. some people!
it'll go to.
See? The problems of using GOTO. You use it and in the end you don't even know what you meant.
!windows != linux
Very true.
Linux is on the majority of the top 500 computers, though. All new-ish HPC facilities I have access to run Linux. Not that that's a large sample..
Yeah, they should've just included the amount of Linux systems in the summary instead of forcing everyone to RTFA.
Why - is it not 500? Are there still High-Performance Windows experiments going on?
Hmm, no, the summary does not say that at all. Maybe you misread the '500'? ;)
if the summary is correct than most of the top 6 computers run faster than that
Maybe you misread the 'most'? 8)
Whatever the exact number, the summary clearly says that there are at least 2 supercomputers achieving more than 1 Petaflop, which is over twice Seti's performance. So your statement about there being no faster supercomputer than Seti is still incorrect.
As I said in another reply, yes, we do use SLES on the workstations, there's nothing even slightly wrong with that, and SLED has the same problem.
It does seem peculiar. I don't know what lead to this decision, but we're using SLES for desktops instead of SLED. I don't think it's wrong, just a bit peculiar.
Anyway, SLED has the same issue too.
We use Suse Linux Enterprise Server 10 at work. The GTK libraries are too old to build Firefox 3, and SLES 11 is not coming out for a few months.. I guess our local admin will have to seriously consider ditching SLES, its general obsolescence is becoming a problem lately.
But in any case, I can't understand the decision of ending support for Firefox 2 just 6 months after having released Firefox 3, this is too short for some distributions to respond.
Judging by the 64 megs, the Pentium and 486 references etc, it's pretty obvious that this does not belong in the present.
Wonder how a moderator can miss that.
I went into the trouble of trying to run this under Linux.
the supplied batch files didn't work - it was missing files due to bad paths. the java application required a HUGE meddling around, choosing the settings, creating tests...
All works fine under my Ubuntu box with the latest Wine and Java JRE runtime (which I happened to have installed).
But whatever, I agree with you: who on Earth decided that testers should even need to use the command line? Why didn't they just embed the Java into a webpage?
And it's not only that the sample will be reduced, it could be that the results come out biased -- what if it turns out that geeks tend to be tone-deaf, or another unfortunate correlation like that?
what is the compelling reason for choosing Linux over OpenSolaris or, say, PC-BSD, on a laptop?
Frequency scaling support for the processor to save power? Hardware support in general? I tried OpenSolaris 2008.5 on my laptop, and this was the main issue.
The userspace is a bit archaic - it's classic System V, which makes even a GNU userland look nice.
I was interested in trying OpenSolaris for this very reason, since I wanted to see e.g. if I could build Makefiles that worked with GNU make, Sun make and BSD make, and that type of stuff. But to my surprise the userland tools I tried were all GNU.
The command "reboot isn't tickles lawl" might cause an unexpected reset.
Not until you type another single quote and press enter, though.
To me Fortran 77 is equally laughable. Starting right from the punchcard-oriented fixed format of the source files. It feels old and uncomfortable, to say the least.