there is only one thing I see interesting in the newer kernels (especially in 2.6.17) and that is RAID-5 improved support
you will be able to add/remove disks from the RAID-5 while running, and increase the size dinamically
I thought raid already worked well
it did.. but you couldn't alter the size of the RAID
now you can add a new disk, and make the RAID bigger
without a new install, format, partition, etc
the other nice thing is Xen
what is xen?
some Virtualisation technology
running multiple OS'es on the same hardware at the same time
like vmworks or qemu?
Xen is a virtual machine monitor (VMM) for x86-compatible computers. Xen can securely execute multiple virtual machines, each running its own OS, on a single physical system with close-to-native performance.
yeah, reading the website
seems like it requires the guest OS to be "ported" aka patched
which means that doze can't be a guest OS
probably one of the reasons why vmware releases his stuff for free now
jmkasunich: yeah, probably so
from website "A port of Windows XP was developed for an earlier version of Xen, but is not available for release due to licence restrictions."
"However Xen 3.0 added Intel VT-x support to enable the running of unmodified guest operating systems, including Windows XP & 2003 Server, using hardware virtualization technology. We are working on implementing support for the equivalent AMD Pacifica technology."
from XenFaq section ;-P
does look interesting
it looks like you can use it even with kernel 2.4
why do you associate it with 2.6.17?
I think it will be merged into the kernel at some point
not sure though
I know it probably will eb in edgy
if its working now, maybe I should use it instead of vm for the compile farm?
yeah, but it means you need to patch all the kernels
even the ones on the 2.xx BDI
which means.. lots of work
jmkasunich: if I were you I would give vmserver a go..
it seems to be running great
I have a vmdk for dapper
2.5 GB ;) so kinda long download
good point about the patching
open office has one thing in common with M$ office....
and eats up lots of memory
tried to view a powerpoint from the xen site
after about 6 pages it barfed
powerpoint support is rather bad in OO
* alex_joni wonders why Xen people would release powerpoints...
that seems rather odd
the slides I saw seemed aimed at business types
doze people wouldn't really care about Xen
I know.. but still
you really should go to sleep
and I should get busy
I have a big machining job that I will be working on all summer
or the other way around ;)
should get started
making a test fixture for a lab
lots of work tho
100-120 hours or so
btw, did you see this plasma: http://dallur.com/index.php?id=44&tx_lzgallery_pi1[subg]=10&tx_lzgallery_pi1[showUid]=41
Rugludallur (maybe seen him in #emc) is building it
ok,I'm off to bed..
only was able to make 3 slides :/
see you tomorrow.. I guess
Lerneaen_Hydra_ is now known as Lerneaen_Hydra
kerry_ is now known as rayh
went to go make some coffee
how are things going?
it's getting warm fast ;)
we'll have ~100F tomorrow
that is warm
I installed EMC2 on my Breezy machine. Been running sim mode. It's nice.
I really like Ubuntu also
thanks for setting that up
It's my main linux box now
* alex_joni is happy to hear that
I have been playing with an application called Varkon (CAD) and am learning to hack it now
I think I heard about it before
also been looking at how Axis is set up
I am learning python, so I can kind of see how things work
open source is great
yeah, it is
is there a way to tie in the cp tcl conversational cam stuff with one of the emc guis?
drop it in to a directory and make it work as a script?
there is always a way ;)
yes there is
but I never looked at the cp stuff.. so I couldn't say
you could put it in one of the menus pretty easily
I have sort of figured out how to drop small apps into python programs using the 'exec' command
there's probably something similar in tcl
I am enjoying it, learning python anyway
$scriptsmenu add command -label $fname -command "exec $TCLSCRIPTS/$file -- -ini $EMC_INIFILE &"
that adds an entry to tkemc's Scripts menu
unfortunately multiple MDI lines don't add up the same way as a full gcode file does, or it'd be easy to just dump all the cp1 data into MDI
but you could write out to a temp file and read that into one of the gui's
I am going out to the garage to try some of this. thanks
finished my presentation ;) yay
now I need to pack :(
how long will you be gone this time?
till thursday night
only 4 days
kerry_ is now known as rayh
hi Ray. how goes it?
Survived another day.
amazingly enough, it's friggin hot here
Visited qingdao and ate lots of seafood.
some strange critters mixed in there.
staring back at you
entertained the entire restaurant with my chop-stick inability
I am simply amazed with the machine tool manufacturing here
quantity, quality, or both?
quality and variety.
There are at least four local controls
PC based it looks like.
some are dual computer, Linux on the motion and ms on the display
I'll see if I can get a look behind the displays once we get into the factories.
have you noticed what medium they use to sommunicate? (serial, ethernet ...)
communicate, that is
The "domestic" controls seem to be primitive
I see a lot of db9 and db35
ok. serial and proprietary parallel then (most likely)
and quite a few 50 pin ribbon
My impression is that the db25 is IO rather than bus.
yep - that was my idea, but DB9 is very likely serial
Or is like the mesa card Aram is using to talk to drives.
The domestic drives are really old school
big and klunky
I saw one distributor/maker of panasonic that looked like state of the art ac
I imagine the hardware is good, the UI / copmuter stuff is good, but the electronics in between aren't all that great
Right. Many companies are making very nice AC motors with encoders.
Really compact for the power and torque supplied
There are some very nice steppers motors as well.
are the 5-phase all that common?
Looks like they have the magnetics pretty well down.
Every factory wants them but complain about the drives
I'm sure it's a PITA
The drive issue seems to me to be what gives fanuc, siemens, and mitts their advantage.
I think those are wired similarly to 3-phase AC motors - in "super-delta" or "super-wye" modes
5-sire or 10-wire
gah - wire
The ones I've got are 5 wire
I've seen 6
ok. that gives interesting things when you consider that the 5 taps are more or less connected in a circle
6 would be unipolar, I think
Seems to me that the circle allows for some interesting stepping combinations.
half step would be just about trivial
err - yeah, interesting ;)
sort of. you still get half current in the wrong direction, two taps down
was the listing on one set of motors
bit of trouble with my comprehension since this was a domestic trade show.
well, that would be 6000 steps/rev
that's a lot
isn't the normal resolution of a 5-ph stepper closer to 500 steps/rev? (.72deg/step or soemthing)
They were running torque curves based on pps rather than rpm.
Something like that.
usually dual rated.
ok, similar to the slo-syn synchronous/stepper motors, maybe
I don't have a clue about the internal geometry.
but twisting the shaft while disconnected makes you think it is a really cheap motor
get a cheapo, for destructive testing ;)
big steps between resting positions.
I should find a small one and do that.
sure - you still have ~3.6 or 7.2 degrees per full electrical cycle
The ones I've got available are 34 dual stack
what kind of torque range?
not bad at all. any NEMA 42?
I have not seen any
hi & bye guys ;)
hmmm. was thinking of testing out on the BP
I'm back on thursday
hi Alex. see you Friday or so ;)
I've seen tripple stack 34
but to greece.. so it's not that bad :D
no - Nice is in France ;)
need to get up in 4 hours to catch a plane
slap that man around some
later all you
have a good trip
enjoy all the Greec-y food :)
I've seen specs out to 1500 ounce inch in size 34
ok. that would work on a BP
And with real encoder feedback it would be an iinteresting solution
Gotta get to breakfast.
catch you later.
it seems that we may want to have a "stepper PID" module, that can slow things down when needed
ok. see you around
Yes. sorta based on the adaptive notions
but stepper mode "ok, you're trying as hard as you can"
instead of servo mode "push it harder"
been trying to think of a serial protocol that would querry devices
jepler wrote a small driver recently
and install relevant HAL modules based on the answer.
"spp" or something like that "simplest possible protocol"
ah - that would be cool
really. I'll have to study when I get back.
(yours, not his)
Okay. That works.
Control panels can work in user if rt doesn't take to much time.
gotta run. guys are glaring at me.
actually, the RT implementation of jogwheel support is apparently much smoother than the userspace version