Category Archives: Administrative

Administrative, Business, Technology and Society

Computer Upgrade

22 Comments

I just went from a 3.8 MGHz to 4.1 MGHz processor (A10-6800K), and doubled memory, from 8 GB of 1366 to 16 GB of 2133. The difference in performance is amazing. Mostly due to memory, I suspect (the only difference in CPU is the slight percentage increase in speed). Now to go put the old CPU and memory in her machine, which will be an upgrade for her Windows system.

[Update a few minutes later]

I’m sure the fact that the OS is on an SSD doesn’t hurt, either.

[Update late afternoon]

Oh, goody. In order to give her computer the new CPU/memory, I have to change the motherboard out, too, but the HP Pavilion case doesn’t seem to have cables marked. Sigh.

Administrative, History

Heading Home

20 Comments

In an hour or so, I’m heading up the coast for the day to see Caesarea, then this evening, back south to Ben Gurion to go through the supposed lengthy flight check in, then a 13-hour flight to Philly, then a layover, then a five-hour flight back to California. Not looking forward to any of it, other than the initial sightseeing.

Anyway, probably off line until at least early Saturday morning, eastern time. I may use wifi on the flight to LA, if I’m sufficiently conscious.

[Saturday-morning update]

Well, I seem to be sufficiently conscious (despite not really having gotten anything resembling sleep for over 36 hours). From the plane over eastern Tennessee, heading west.

[Bumped]

Administrative, Business, General

Off To Israel

29 Comments

I’m flying there tomorrow on business, back next Saturday. I’m thinking about renting a car. The rates seem pretty good (though I don’t know what the surcharges will be), and I can get supplemental insurance for $40 for the week. Anyone have any experience?

[Evening update]

OK, gotten a lot of useful feedback. Sounds like it would be manageable for me if it’s really no worse than south Florida with all the Haitians, but my new info is that they have a pretty good train system. If I were on vacation and wanting to explore, and into a terrifyingly entertaining experience, I’d definitely rent the car, but I’m there on business, and not moving around much. It looks to me like the best bet is to take a train from Ben-Gurion to Hertzlia, then a short cab to my hotel, and get around locally with cabs (and colleagues with whom I’m there on business). On Friday, my main day off, I could take train to airport to drop bag, then another to Jerusalem for sightseeing, then back to airport for flight home.

Administrative, Mathematics, Technology and Society

Weird Linux Problem

13 Comments

Anyone have any ideas why I can’t do a yum update in Fedora? Or rather, why I can’t write to the disk as root?

# yum update
Loaded plugins: langpacks, refresh-packagekit
Cannot open logfile /var/log/yum.log
Repository google-chrome is listed more than once in the configuration

[Errno 30] Read-only file system: ‘/var/cache/yum/x86_64/20/adobe-linux-x86_64/repomd.xml.old.tmp’

Here’s what I’m seeing at /:

# ls -l
total 65
lrwxrwxrwx. 1 root root 7 Dec 11 2013 bin -> usr/bin
dr-xr-xr-x. 6 root root 4096 Dec 22 14:47 boot
drwxr-xr-x. 21 root root 3520 Dec 24 09:15 dev
drwxr-xr-x. 140 root root 12288 Dec 24 09:15 etc
drwxr-xr-x. 4 root root 4096 Dec 20 2013 home
lrwxrwxrwx. 1 root root 7 Dec 11 2013 lib -> usr/lib
lrwxrwxrwx. 1 root root 9 Dec 11 2013 lib64 -> usr/lib64
drwx——. 2 root root 16384 Dec 11 2013 lost+found
drwxr-xr-x. 2 root root 4096 Nov 7 16:53 media
drwxr-xr-x. 3 root root 4096 Dec 20 2013 mnt
drwxr-xr-x. 4 root root 4096 Oct 29 15:18 opt
dr-xr-xr-x. 222 root root 0 Dec 24 09:14 proc
dr-xr-x—. 12 root root 4096 Dec 22 15:33 root
drwxr-xr-x. 34 root root 900 Dec 24 09:17 run
lrwxrwxrwx. 1 root root 8 Dec 11 2013 sbin -> usr/sbin
drwxr-xr-x. 2 root root 4096 Aug 7 2013 srv
dr-xr-xr-x. 13 root root 0 Dec 24 09:14 sys
drwxrwxrwt. 12 root root 280 Dec 24 09:21 tmp
drwxr-xr-x. 12 root root 4096 Dec 11 2013 usr
drwxr-xr-x. 21 root root 4096 Dec 24 09:14 var

Here’s /var:

# ls -l /var
total 112
drwxr-xr-x. 2 root root 4096 Dec 11 2013 account
drwxr-xr-x. 2 root root 4096 Aug 7 2013 adm
drwxr-xr-x. 14 root root 4096 Dec 20 2013 cache
drwxr-xr-x. 2 root root 4096 Aug 5 21:27 crash
drwxr-xr-x. 2 root root 4096 Aug 2 2013 cvs
drwxr-xr-x. 3 root root 4096 Oct 2 09:32 db
drwxr-xr-x. 3 root root 4096 Dec 11 2013 empty
drwxr-xr-x. 2 root root 4096 Aug 7 2013 games
drwxr-xr-x. 2 root root 4096 Aug 7 2013 gopher
drwxr-xr-x. 3 root root 4096 Aug 7 17:19 kerberos
drwxr-xr-x. 46 root root 4096 Dec 24 09:14 lib
drwxr-xr-x. 2 root root 4096 Aug 7 2013 local
lrwxrwxrwx. 1 root root 11 Dec 11 2013 lock -> ../run/lock
drwxr-xr-x. 15 root root 4096 Dec 24 09:15 log
lrwxrwxrwx. 1 root root 10 Dec 11 2013 mail -> spool/mail
drwxr-xr-x. 2 root root 4096 Aug 7 2013 nis
drwxr-xr-x. 2 root root 4096 Aug 7 2013 opt
drwxr-xr-x. 2 root root 4096 Aug 7 2013 preserve
lrwxrwxrwx. 1 root root 6 Dec 11 2013 run -> ../run
drwxr-xr-x. 10 root root 4096 Dec 11 2013 spool
drwxrwxrwt. 539 root root 36864 Dec 24 09:15 tmp
drwxr-xr-x. 2 root root 4096 Aug 7 2013 yp

I tried to just create a file in /root, with no success (though that’s not really surprising, given the permissions). What’s really weird is that I have no problems writing as a normal user. It’s just a problem with root. Which is, of course, a big problem. I’ve tried rebooting, with no joy.

[Later afternoon update]

OK, I’ve gotten the machine beaten into submission. I loaded Fedora 21 on a live USB, and (unlike Fedora 20) it will actually boot with my new motherboard. So I cleaned up the drives, then installed the new OS on the new SSD. I overmounted my old /home drive onto the new /home, and I’m reinstalling software, which is going very fast, because the SSD is very fast. With the new quad-core processor, I’m cooking with Crisco. Nice Christmas present to myself.

[Update a few minutes later]

Wow. Just did a reboot after a bunch of updates. Ten seconds.

Administrative, Technology and Society

PC Question

9 Comments

No, not political correctness — personal computer. I’m doing a mobo/processor upgrade. I notice that almost all the AMD processors have Radeon graphics built in. I assume that in order to take advantage of this, I have to have a mobo with video support? I’ve been operating off an old PCI express card for years, and have no problems with it, but if I can get significant performance improvement from the new built-in GPU, it might be worth spending a little more for a video mobo. I don’t do any heavy graphics, but maybe it would be nice to go to full HD and fast processing.

[Update a few minutes later]

OK, all the boards have video outputs, so when it says it has no on-board video support, that just means that it has no dedicated graphics chips, and relies on the processor, right? So the GPU built in to the CPU would work, and be better than my old PCI express? Or is the separate card better because it has its own memory?