Not the most exciting of days, managed to get Banshee installed and my music library copied to the NAS. I’ll go crazy unless I have a bit of music playing while I work. Banshee is pretty nice, Ladytron is sounding good. Though after a bit of exploration, I’ve decided to move to OGG Vorbis format for my future encoding. MP3 playback isn’t really “free” and seeing as I’m playing in linux-land now, I might as well move to another well supported format (it seems the default for many applications). Quality is supposed to be better as well. We’ll see.

Snagged a copy of an app called Grsync, a graphical front-end to rsync, a (funnily enough), file synchronization application. Easy to use and once I allowed it to run as root, it could backup everything nicely. And quickly, wow.

The bulk of the day was replacing my disc imaging application. dd was proving a bit arcane, partimage doesn’t support the ext4 filesystem, so I created a bootable USB key to launch Clonezilla. Easy to navigate and I simply backed up my entire 120 gig SSD (Windows7/Fedora dual boot) in one go. While Macrium Reflect has been serving me well at home, I might consider moving to Clonezilla wholesale.

Now to pick up the lapdog and go off to a vendor demonstration (Nuke and Mari).


Hooking Up a NAS

So I’ve decided to make a short. A short-short to be precise. Under 30 seconds.

Mainly because it’s all great to be boning up on Linux and Houdini but it doesn’t mean much unless it’s put into action. Here, I intend to “discuss” the experience. May it serve as a warning to future generations.

Yesterday, I realized I needed a portable NAS. Now, I have a couple of Netgear “ReadyNAS” units (and a Drobo, but I’ve been trying to block that purchase out) that are stuffed full. Besides I wanted, keeping with the theme, a linux based box. Building my own out of an old machine was an option but, really, a super low power unit I can keep running 24/7 appealed to me. So I picked up a Synology ds2011j. It’s not the fastest but it reviews well. You can even connect via SSH if you want. And combined with a couple of 2TB drives, it’s got enough space for what I plan. Well under $400.00 all told. Setting it up was a breeze and I left the box to build it’s raid set overnight.

Today was more of a challenge. After setting up the basics of the unit (through it’s excellent GUI), I did a speed test using CIFS. OK, good enough anyway. But then I thought I should probably try it with NFS, just to see. Well, not so simple. First of all it’s not nicely auto-discovered as with the first method. No, you need to create a mount string and either enter it into a shell or run it at startup. Not a big deal, that’s what the internet is for. But I was still stumped after a time. Turns out the unit will not allow the connection by hostname, but only by IP address. Once that was out of the way I could finish benchmarking. CIFS ran about 30 MB/s in either direction. NFS, about 25 MB/s write, but 85 MB/s read. Much better.

Of couse the big downer is that Microsoft, from what I can tell, has seen fit to leave out NFS drivers from their Windows 7 64 Pro OS. No big deal at work, but at home I have my CG apps on such a box. I wonder whether there is a way around this without coughing up for Windows “Ultimate” (which apparently includes the driver). Some research for the weekend.

And so I don’t forget:

mount -t nfs /media/Projects
Bash Shell Command to Find or Get IP address
NFS Client Configuration
Optimizing NFS Performance

Static IP’s here I come!


Building a Fedora 14 box and thought I’d just keep all my reference links in one place this time. Might be helpful if you’re building a Linux workstation for the fist time (or are just forgetful like me :-).

Tuning Solid State drives in Linux

Intel Sandy Bridge 82579 driver

Fedora 14 Nvidia Drivers Install Guide

Disable SeLinux on Fedora 14

Enable Fire Sharing with Windows via Samba

Hard Disk Clone with “dd” (dd if=/dev/sda5 of=/media/Data/disk1.img).

Maya 2012 Installation works as per Autodesk’s guide, except for having to add the following to Fedora 14 :

APCUPSD Manual (for control of UPS’s)

Intel 82579v (Asus P8P67) Fedora 14 Driver Install

nspluginwrapper and flash install

And finally, moving my tempdir to a much larger volume then starting up Houdini (which really eats up the space on big sims!). It will be slower over a NFS mount, but until I get a dedicated cache disk, it will have to do:


Overclock a Linux box? You’ll want to monitor temps (even if you don’t overclock, it’s a good idea to check every once in awhile).

How to get linux sensors information


The old post was under Ubuntu 10.10 and worked great. For various reasons I’m running Fedora 14 at the moment and configuring this Wacom 2 tablet is just as simple, but is done in a different manner. Though this is based on a SourceForge article, I had to modify things a bit to get it all working:

Create a text file named .xsetwacom.sh file in your home directory and make it executable (chmod +x). Assign it to start up  (system/preferences/startup  through the GUI). The pertinent content for this file I’ve adapted from the documentation page above. Works for me here, though your mileage may vary:

xsetwacom set “Wacom Intuos2 6×8 stylus” Suppress 4  # data pt.s trimmed, default is 4, 0-20
xsetwacom set “Wacom Intuos2 6×8 stylus” RawSample 2  # data pt.s filtered, default is 2, 0-100
#xsetwacom set “Wacom Intuos2 6×8 stylus” ClickForce 27  # pressure, default is 27, range is 0-2047
xsetwacom set “Wacom Intuos2 6×8 stylus” Threshold 27  # pressure, default is 27, range is 0-2047
xsetwacom set “Wacom Intuos2 6×8 stylus” PressCurve 5 10 90 95  # Bezier curve, default is 0,0,100,100
xsetwacom set “Wacom Intuos2 6×8 stylus” TPCButton on  # stylus tip + button, or “off” for hover mode
xsetwacom set “Wacom Intuos2 6×8 stylus” Mode Absolute  # or Relative cursor movement
xsetwacom set “Wacom Intuos2 6×8 stylus” Button1 1  # left mouse click
xsetwacom set “Wacom Intuos2 6×8 stylus” Button2 3  # right mouse click
xsetwacom set “Wacom Intuos2 6×8 stylus” Button3 2  # middle mouse click
xsetwacom set “Wacom Intuos2 6×8 eraser” Suppress 4  # data pt.s trimmed, default is 4, 0-20
xsetwacom set “Wacom Intuos2 6×8 eraser” RawSample 2  # data pt.s filtered, default is 2, 0-100
#xsetwacom set “Wacom Intuos2 6×8 eraser” ClickForce 27  # pressure, default is 27, range is 0-2047
xsetwacom set “Wacom Intuos2 6×8 eraser” Threshold 27  # pressure, default is 27, range is 0-2047
xsetwacom set “Wacom Intuos2 6×8 eraser” PressCurve 0 10 90 100  # Bezier curve, default is 0,0,100,100
xsetwacom set “Wacom Intuos2 6×8 eraser” Mode Absolute  # or Relative cursor movement
xsetwacom set “Wacom Intuos2 6×8 eraser” Button1 1

Hope this helps somebody out there. Tablets are great, if you can set them up to work the way YOU would like.
ps. Just tried this with Scientific Linux. Had to confirm the tablet device name (with a “xsetwacom –list”) and found it quite different. Not only that but the device needed to be wrapped in single quotes to work. And some of the parameters were not supported. It’s a minefield! :-). If things are really not working, just put the -v flag into a config line and run it in a shell. It should tell you what’s broken.


Two Galleries

Two galleries are present now, linked above. One dedicated to Stanley and friends, the other to non-panorama photos out and about.

Touching on a previous post, it seems a combination of Microsoft’s ICE and Hugin is getting me by on the panorama stitching front. Though the flash panorama output of Kolor’s Autopano Giga is interesting me too. I don’t take 360 degree panoramas (yet), but it’d be nice to put them into an environment to “revolve in”. For tone mapping, Picturenaut for more naturalistic tweaking, Photomatix to really ramp things up. Too bad the former isn’t 64 bit.


More of the woods.

Besides Stanley running into the shots, we’ve had a good time during a brief week of sunshine here in Vancouver. The new lens is working well and I’ve actually spent two days shooting with the camera set to manual. Lots of mistakes, but it’s slowly coming together.

Pacific Spirit Regional Park

Another day in the park.

Off the path...

Spanish Banks - Off the path...


This Pano didn’t turn out as expected. I was going for a full set of bracketed exposures to create a proper HDRI with when it started snowing! So much for a pleasant day at the beach. I took this in a hurry, and it shows.
Spanish Banks Starting to Snow.

Sigma 10-20 mm lens.One thing that is slowing me down is my stock lens. With the sensor in my camera making the focal length a little longer, I’ve had to take 15 images for each 360 degree “strip” of the panorama. Not only is this time consuming, but it means I’m ingesting far more data than needed. 27k wide panoramas sound great, but it’s overkill for my purposes. To that end, a Sigma 10-20mm F3.5 EX DC HSM lens mysteriously appeared today. With the wider viewing angle, it means I’ll need far fewer snaps.

Now to take the bracketed exposures more quickly. Right now I can set up the camera to take three automatically, enough for creating “HDRI snapshots” but not nearly enough for technical work. I can do multiple sets of these brackets manually but, well, some other options I’ll be exploring:


Stanley and Scarlet

Stanley and friend having a bit of a wrestle. Off screen is a picture window and at times they’ll draw quite a crowd..

Stanley and Scarlett – Ultimate Battle from Christopher Stewart on Vimeo.


…and took some photos. I haven’t shot a panorama in ages, so I thought it time to get back into it again. Canon T2i, stock lens and Manfrotto Pano head. Original is 27,389 x 5430 tone mapped HDR.

Panorama in Pacific Spirit Regional Park

Into the woods with the dog I go.


An attempt to make a very thick fog vapor..

Enough smoke. Time to move on…