Hi all, Well, I've compiled up FreeDV on my Banana Pi here and it runs.
As I see it, the Banana Pi with a SATA disk is a realistic low power ( < 5W ) general purpose Linux box. When I started in the Unix world, you could run X11R6 the GUI on the Motorola 68020 CPU as I did on an Integrated Solution Inc. box. But on the MIPS M120 (20MHz MIPS CPU) with 32Mb ram and 600Mb disk it all ran very well. So Glen, I've been there. The Odroid XU4 is perhaps much better in your eyes but at the cost of much more power consumption, note the heatsink and cooler fan option. And, much more expensive storage. a 32Gb eMMC costs as much as a 1Tb SATA disk. And #2, there's none in MY junk box. Keep smiling Alan VK2ZIW On Sun, 8 Apr 2018 14:53:02 +1000, Alan Beard wrote > Hi, > I used to be a full on SPARC guy but my Sun Ultra 5 is a bit old now > (1999). > > Should I try on my Banana Pi M1 and SATA SSD, the FreeDV app? > > Dual Core armv7hl @ 1GHz with 1Gb ram and, a real SATA disk > interface. This allows real swap space and huge disk throughput. > > At about $70 AU is a bargain for a FULL linux box. > (Fedora 25 or later is my choice) > (and an SSD or hard disk of course) > > I read the specs on the ESP32, DMA only points at the internal memory > so a High Speed disk interface is a problem. > > BTW: I decided to upgrade my Banana Pi with a Banana Pi M2 Berry but > the linux software support is not there yet. No GUI on the HDMI > video. Debian boots but I can't get XRDP to work. Also Debian uses > the 3.10.xx kernel which is old now, as does other Debian based > distributions for ARM. WHAT A PAIN. > > Fedora 25 on the original Banana Pi works, a dream. > > 73 - isn't that an old electron tube? (HV triode) > > Alan VK2ZIW > > On Sun, 8 Apr 2018 10:55:59 +1000, glen english wrote > > I generally assume for estimations, FPU ops = INT ops per clock, and > > if you are careful you can do simultaneous INt/FPU ops... > > > > Just watch out for non aligned floating point accesses. bang... not > > lots of __aligned__ used. > > > > I used to be a full-on SHARC guy. but I wonder where that market is > > now with M7 and M4F around , and NEON which if you know what you are > > doing can run rings around a SHARC. > > > > Just diehards i think. The simple thigns with SHARC have disappeared > > with cache involvement. > > > > On 8/04/2018 10:51 AM, Dana Myers wrote: > > > On 4/7/2018 5:22 PM, Bruce Perens wrote: > > >> It could also be the use of memory barrier instructions. I'd like to > > >> benchmark Codec2 rather than a simple floating point loop with > > >> volatile variables. But if we are to believe the times on the screen > > >> of the esp32 in the video, he was getting acceptable performance. > > > > > > From what I've seen, the Cortex-M FPUs basically give single-precision > > > FP add/sub/mul in the same number of clocks as integer operations. > > > > > > With a proper program store cache, Cortex-M4F is quite the rocket, > > > really. > > > > > > Now I want to hunt down the appropriate Tensilica reference for the core > > > in the ESP32; it occurs to me the two cores may be sharing one FPU, > > > though I don't immediately see how the simple test would incur context > > > switching frequently. > > > > > > 73, > > > Dana K6JQ > > > > > > > > > ------------------------------------------------------------------------ -- > ---- > > > > > > Check out the vibrant tech community on one of the world's most > > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > > _______________________________________________ > > > Freetel-codec2 mailing list > > > Freetel-codec2@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > > > -------------------------------------------------------------------------- -- > -- > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Freetel-codec2 mailing list > > Freetel-codec2@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > Alan > > Evil flourishes when good men do nothing. > Consider the Christmas child. > --------------------------------------------------------------------------- > Alan Beard Unix Support Technician from 1984 to today > 70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS > Emu Heights N.S.W. 2750 Routers, terminal servers, printers, > terminals etc.. +61 2 47353013 (h) Support Programming, shell > scripting, "C", assembler 0414 353013 (mobile) After uni, > electronics tech > > ---------------------------------------------------------------------------- -- > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 Alan Evil flourishes when good men do nothing. Consider the Christmas child. --------------------------------------------------------------------------- Alan Beard Unix Support Technician from 1984 to today 70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS Emu Heights N.S.W. 2750 Routers, terminal servers, printers, terminals etc.. +61 2 47353013 (h) Support Programming, shell scripting, "C", assembler 0414 353013 (mobile) After uni, electronics tech ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
