#linuxcnc-devel Logs

Feb 15 2018

10:02 AM seb_kuzminsky: riscv is coming along: https://rwmj.wordpress.com/2018/02/15/fedora-risc-v-runnable-stage-4-disk-images/
01:34 PM skunkworks: what is that?
01:37 PM jepler: skunkworks: RISC-V is an instruction set that is being promoted as an alternative to x86 and ARM. It's "open source" in some sense, I guess, which excites some people.
01:37 PM jepler: recently, a $1000 RISC-V development board has been announced that's supposed to be able to run Linux.
01:38 PM skunkworks: huh - everything old is new again :)
01:38 PM jepler: oh my, due to a bug, "-" was implemented incorrectly in my program (implementation the same as for "+"!), and another design choice hid the fact that any calculations with "-" would be wrong. (because + was always checked before -, and duplicate values were never printed)
01:39 PM skunkworks: (I remember 'risc' being the nest best thing - that and fuzzy logic..
01:39 PM skunkworks: *next
01:40 PM jepler: so for instance, my older program found "AA E/n" as the shortest sequence for 7, but now it finds the shorter "Adv-n"
02:00 PM jepler: hum, this one I don't get. Previous revision found 315095 as CdiEDFDBn, newer version finds CiEDFDBn. I think "Cd" must not have been accepted as a prefix, because "Cdn" was an error. oops!
02:01 PM jepler: errr, "Cin"
02:02 PM jepler: .. stops "Ci" from being recorded as a valid prefix
02:06 PM jepler: I bet you wish I'd talk about the development of linuxcnc instead
02:14 PM cradek: I don't have strong feelings about that
02:25 PM seb_kuzminsky: random nerdy stuff is fine by me
02:39 PM skunkworks: I am randomly nerdy...
03:10 PM Chris_Morley: pcw_mesa: read times are 250000 - 300000 - not sure how to ping - overnight latency is bad aprox 66000 servo jitter, but latency in 10 mins is aprox 30000 servo jitter - it is an intel 62579lm gigabit using e1000e driver
03:18 PM seb_kuzminsky: Chris_Morley: "ping 192.168.1.121"
03:18 PM Chris_Morley: thank you i will try that !
03:25 PM Chris_Morley: pcw_mesa: average ping time .161ms peak .238ms
04:34 PM seb_kuzminsky: ouch! that's really high
09:59 PM jepler: 9704 CoFEFEn