Topic for #qi-hardware is now Copyleft hardware - http://qi-hardware.com | hardware hackers join here to discuss Ben NanoNote, atben / atusb 802.15.4 wireless, and other community driven hw projects | public logging at http://en.qi-hardware.com/irclogs
GNUtoo has quit [Quit: Program received signal SIGSEGV, Segmentation fault.]
kuribas has joined #qi-hardware
LunaVorax has quit [Ping timeout: 264 seconds]
xian9fu has joined #qi-hardware
kuribas has quit [Quit: ERC Version 5.3 (IRC client for Emacs)]
xiangfu has joined #qi-hardware
porchao has joined #qi-hardware
porchaso0 has quit [Ping timeout: 260 seconds]
emeb has quit [Quit: Leaving.]
freemor has joined #qi-hardware
freemor has quit [Ping timeout: 272 seconds]
emeb has joined #qi-hardware
xiangfu has quit [Quit: leaving]
xiangfu has joined #qi-hardware
xiangfu has quit [Quit: leaving]
xiangfu has joined #qi-hardware
xiangfu has quit [Client Quit]
xiangfu has joined #qi-hardware
emeb has quit [Quit: Leaving.]
xiangfu has quit [Quit: leaving]
xiangfu has joined #qi-hardware
xiangfu has quit [Client Quit]
xian9fu has quit [Quit: Leaving]
xiangfu has joined #qi-hardware
DocScrutinizer05 has quit [Disconnected by services]
DocScrutinizer05 has joined #qi-hardware
wolfspra1l has joined #qi-hardware
wolfspraul has quit [Ping timeout: 255 seconds]
jekhor has joined #qi-hardware
wolfspra1l has quit [Quit: leaving]
kilae has joined #qi-hardware
xiangfu has quit [Ping timeout: 244 seconds]
xiangfu has joined #qi-hardware
Fallenou has quit [Ping timeout: 260 seconds]
xiangfu_ has joined #qi-hardware
xiangfu has quit [Ping timeout: 264 seconds]
LunaVorax has joined #qi-hardware
rz2k has joined #qi-hardware
jekhor has quit [Ping timeout: 250 seconds]
kuribas has joined #qi-hardware
<viric>
can it be that the nanonote is faster than the raspberry pi (for non fp code, of course)
<viric>
?
xiangfu has joined #qi-hardware
xiangfu has joined #qi-hardware
xiangfu has quit [Client Quit]
lekernel__ has quit [Ping timeout: 245 seconds]
lekernel__ has joined #qi-hardware
LunaVorax has quit [Remote host closed the connection]
<larsc>
I doubt it
<larsc>
as far as I know the cpu freq of the rpi is twice that of the nanonote. And usually ARM is not a factor two slower than MIPS when it comes to instructions per clock cycle
<viric>
ok
antoniodariuh_ has joined #qi-hardware
antoniodariuh_ has quit [Client Quit]
<wpwrak>
viric: did anyone make such a claim ? or was this just speculation ?
<viric>
my speculation
<viric>
I've seen the nanonote quite capable, and the pi a bit slow. But maybe I simply gave too different jobs to them
xiangfu_ is now known as xiangfu
xiangfu has quit [Quit: leaving]
xiangfu has joined #qi-hardware
<wpwrak>
the display resolution may also make a difference. the ben has only a few pixels to move.
<larsc>
yea, I have seen ben like hardware connected to a 800x600 display, it wasn't pretty ;)
<viric>
I've been only compiling
<viric>
I've 'openssl speed' numbers somewhere
<viric>
of both.
unclouded has quit [Ping timeout: 245 seconds]
pcercuei has joined #qi-hardware
rz2k has quit [Read error: Connection reset by peer]
urandom__ has joined #qi-hardware
woakas has joined #qi-hardware
GNUtoo has joined #qi-hardware
kuribas has quit [Remote host closed the connection]
erikkugel has joined #qi-hardware
xiangfu has quit [Quit: leaving]
Hoolxi has joined #qi-hardware
GNUtoo has quit [Remote host closed the connection]
Hoolxi has quit [Remote host closed the connection]
<DocScrutinizer05>
compiling is 90% IO
woakas has quit [Ping timeout: 264 seconds]
<DocScrutinizer05>
IO in turn is massively depending on your actual hw design, like in "ZX81 computed during the VSYNC period of display only, other time the RAM been busy with video buffer readout"
<DocScrutinizer05>
well, odd example since that's not even IO
<DocScrutinizer05>
but anyway I guess you get the picture, regarding using a RAMdisk vs slow MMC flash storage raped by constant swapping and thus slowing down to <1 IOPS for real file access
<DocScrutinizer05>
the latter commonly known as swap hell on e.g. Nokia N900
<DocScrutinizer05>
compiler runs are *very* prone for running into swap hell on any architecture that has small amounts of RAM, compared to filesize of the compiled project
<DocScrutinizer05>
-j 64 doesn't help either ;-)
<wpwrak>
-j 64 at least makes the situation obvious ;-)
pcercuei has quit [Remote host closed the connection]
emeb has joined #qi-hardware
dvdk has joined #qi-hardware
GNUtoo-desktop has joined #qi-hardware
<wpwrak>
yeah
<wpwrak>
and in user space
<wpwrak>
well, with the usual dirty tricks :)
<wpwrak>
for example, i turn off interrupts while sending/receiving
<wpwrak>
of course, it's not perfect. i.e., it has to be ready and polling when a new byte arrives. in a typical request-response dialog, that is normally no problem, but if you have fully independent operation, it would lose receive data
<wpwrak>
what the full-duplex capability does is that it allows responses to begin while still sending. e.g., an echo or maybe in the future xon/xoff flow control
LunaVorax has joined #qi-hardware
porchao has quit [Ping timeout: 252 seconds]
rz2k has joined #qi-hardware
<DocScrutinizer05>
roh: you've been the rider or the driver of Rudi? ;-D
<DocScrutinizer05>
roh: nevertheless I seen two guys with hoods on a weird bike... Instantly thought of you and gismo, you both looked similar in a certain way on Camp
<DocScrutinizer05>
;-)
jekhor has joined #qi-hardware
GNUtoo-desktop has quit [Quit: [INFO] fsogsmd : received signal -11, exiting.]