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
