Newer things

There are not much news. I still keep heavy duty Thinkmate machines both in office and home which run 24/7/365 days. Still Ubuntu, now 19.04. Still the good old windows manager blackbox.

Here a more recent screenshot at home.

This year, I have the first time also a 4TB SSD for the main harddrive at home. It does not give much improvement (unlike the OS harddrives, which I had SSD'd all since 2008), but it makes the machine a bit more quiet even. In a couple of years, there will probably be no moving platter any more. A change which happened also in the last 10 years is that for long term backups (which are not overwritten) I now backup onto external harddrives on an external mac. USB is still a bit unreliable (on all operating systems, partly due to the mechanics of having something external attached, I have had several USB drives mounted on the linux box besides the internal harddrives). One reason for backing up externally on OS X that in OSX, it is trivial to have the HD well encrypted in a standard way (which I'm sure will be readable also in 10 years). My long term backups end up in places which are safe even if all cloud services, all banks, or storage places would disappear or be corrupted. They would be safe even if Boston (and Switzerland) would be nuked or our house burn down. I recently moved back from an external RAID rig to standard cheap 5 TB drives for long term backups or 8 TB drives for short time backups. What happened is that if RAID fails badly like with a defective controller (which happend to me), then it is no more easy to retrieve the information easily. Long term backups are important. I just recently noticed a file failure (due to a case insensitivity of OS X) which got unnoticed for a while. Of course, also all the backups had been overwritten with the wrong file. But long term backups helped to get the file back.

Older stuff (what comes has last been updated in 2010)

I run a mixture of Mandriva and Ubuntu flavours. on my linux boxes. Comparison with OS X. While OS X is great, there are still advantages of Linux: On a logarithmic scale from 1-10, I would give the linux OS an 8, OS X an 7 and windows XP a 4 (maybe a 5 when run in a virtual machine).
Oliver with family and 8 computers at home
"Oliver with family in the home office. Probably around 2008 or 2009.

Nostalgia with old computers: ... "dead" usually means "put asleep and put to rest". Very few machines actually died on me, even so some got parts replaced: for PCs it is usually the power supply, for macs the CD Rom, for handhelds mechanical disasters like sitting on it.
  Computer          RAM     HD     Bought status Company          CPU     Clock    OS                  hostname
  1 Genie_I         14 K      -    1980  dead    TCS_Trommeschl.  Z80_A        4 MHz   Dos
  2 Atari_1400_ST    1 M     20 M  1986  dead    Atari            68000        8 MHz   GemOS
  3 Nextstation      8 M    200 M  1990  dead    Next_Coorp.      68040       25 MHz   Nextstep
  4 Sparc_LX        24 M    450 M  1994  dead    Sun              Microsparc  50 Mhz   Sun OS 4.1
  5 7200/75         32 M    500 M  1995  dead    Apple            PPC_601     75 Mhz   Mac OS 6-7
  6 5300_Powerb     16 M    250 M  1996  dead    Apple            PPC_603e   100 Mhz   Mac OS 6-7
  7 Dell           128 M      8 G  1996  alive   Dell             P_II       300 MHz   Redhat             hadamard
  8 6500/225        64 M      3 G  1997  dead    Apple            PPC_603e   225 MHz   Mac OS 7-9
  9 Image_sys       64 M      4 G  1999  alive   Image_systems    AMD_K6     300 MHz   Redhat/Mandrake
 10 Tuxtops         64 M      4 G  2000  dead    Tuxtops          Celeron    450 MHz   Redhat/Mandrake
 11 Gateway        128 M     15 G  2000  alive   Gateway          P_III      800 MHz   Mandrake 6--10     ncd3
 12 Cube_G4        320 M     20 G  2001  retired Apple            MPC7400/G4 450 Mhz   Mac OS 9-10
 13 IMac_G4        512 M     40 G  2002  retired Apple            MPC7400/G4 700 Mhz   Mac OS 10
 14 Dell           512 M     20 G  2002  alive   Dell             P_III     1000 Mhz   Mandrake 7-10      wiener
 15 Dell           512 M     80 G  2002  alive   Dell             P_IV      2250 Mhz   Mandrake 8-10      knill8
 16 Ibook          512 M     30 G  2002  dead    Apple            G3         800 Mhz   Mac OS 10
 17 Zaurus          64 M    128 M  2003  dead    Sharp            StrongARM  206 Mhz   Lineo's Embedix
 18 Visionman        1 G    120 G  2003  alive   Visionman        2x-Athlon 1666 Mhz   Mand. 8-10/Ubuntu  space
 19 Ibook_G4       768 M     60 M  2004  alive   Apple            G4        1070 Mhz   Mac OS 10          knill4
 20 Noname         500 M    150 M  2004  alive   Self_built       P_IV      2500 Mhz   Mandrake 9-10      moser
 21 MacMini        500 M     1  T  2004  alive   Apple            G4        1420 Mhz   Mac OS 10          knill2
 22 IMac_G5          1 G    160 G  2004  dead    Apple            G5        1500 Mhz   Mac OS 10          knill5
 23 Dell_XPS_Gen5    3 G    750 G  2005  alive   Dell             P_D       3000 Mhz   Mandriva/Ubuntu    knill10
 24 Mac Mini Intel   1 G    250 G  2006  alive   Apple            Intel     1660 Ghz   Mac OS 10          time
 25 IMac_Core_Duo    1 G    250 G  2006  alive   Apple            Intel     2160 Ghz   Mac OS 10          diophant
 26 MacMini Core_Duo 1 G     80 G  2006  alive   Apple            Intel     2000 Ghz   Mac OS 10          knill0
 27 Thinkmate_Core_Duo 4 G    1 T  2008  alive   Thinkmate        Intel     3000 Ghz   Ubuntu             matter
 28 IMac_Core Duo    4 G    500 G  2008  alive   Apple            Intel     3066 Ghz   Mac OS 10          knill3
 29 MacBook Duo      2 G    250 G  2008  alive   Apple            Intel     2400 Ghz   Mac OS 10          knill11
 30 IMac_i5          8 G      1 T  2009  alive   Apple            i5        2666 Ghz   Mac OS 10          knill27
 31 Thinkmate_quad   6 G      2 T  2010  alive   Thinkmate        Intel     3300 Ghz   Ubuntu             knill9

My Geekcode

Version: 3.1
GM d s: a? C++ ULS++++ P++ L++ E--- W++ N+ !o !K w--- !O M+ V !PS !PE Y+
PGP++ t !5 !X R !tv b++ DI D+ G e++++ h---- r+++ y++++
can be decoded here.

Oliver Knill, Department of Mathematics, Harvard University, One Oxford Street, Cambridge, MA 02138, USA. SciCenter 432 Tel: (617) 495 5549, Email: Quantum calculus blog, Twitter, Youtube, TikTok, Vimeo, Linkedin, Scholar Harvard, Academia, Harvard Academia, Google Scholar, ResearchGate, Slashdot, Ello, Webcam, Spring 2020 office hours: Tentative: Mon-Fri 9-10 AM and 5-6 PM and by appointment.