> On 17 Oct 2016, at 8:43 , Sven Van Caekenberghe <s...@stfx.eu> wrote: > > Hi, > > Does a (faster) Cog VM for the Raspberry Pi actually exist ? > > I tried comparing the latest OpenSmalltalk VM with some older ones, only to > find that they are all equally fast (slow actually): > > pi@raspberrypi ~/Pharo $ ./pharo -nodisplay Pharo.image printVersion > [version] 5.0 #50581 > > "http://files.pharo.org/vm/pharoS/raspbian/latest.zip"; > > pi@raspberrypi ~/Pharo $ ./pharo -nodisplay Pharo.image eval '1 > tinyBenchmarks' > '167429692 bytecodes/sec; 11160247 sends/sec' > > "http://www.mirandabanda.org/files/Cog/VM/VM.r3427/cogspurlinuxhtARM-15.33.3427.tgz"; > > pi@raspberrypi ~/Pharo $ ./products/phcogspurlinuxhtRPi/pharo -nodisplay > Pharo.image eval '1 tinyBenchmarks' > '166992824 bytecodes/sec; 11337746 sends/sec' > > "https://bintray.com/opensmalltalk/vm/download_file?file_path=cog_linux32ARMv6_pharo.cog.spur_201610142319.tar.gz"; > > pi@raspberrypi ~/Pharo $ ./products/phcogspurlinuxhtRPi/pharo -nodisplay > Pharo.image eval '1 tinyBenchmarks' > '166992824 bytecodes/sec; 11337746 sends/sec' > > That is no significant difference on a RPi 3, at all. Is this normal ? Am I > missing something ? > > Thx, > > Sven > > PS: Just for reference, my Mac Book Pro is 10 times faster > > 1 tinyBenchmarks "'1323852617 bytecodes/sec; 174185794 sends/sec'"
Are you 100% sure you benched different VM's? A stack VM (PharoS) getting the same results as a Spur VM (cog_linux32ARMv6_pharo.cog.spur_201610142319.tar.gz) is rather suspicious... At least on my Pi3, the spur Cog VM gives numbers around 250M bytecodes/160M sends.... which, while still "slow", is a decent bump in speed compared to what you're seeing. Cheers, Henry
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