MicroPython Forum (Archive)

It seems that rshell is working fine, with the option --buffer-size 30. Also, if you run a more recent firmware, webrepl should work, which includes a file transfer option. b.t.w.: which type/make of board are you using?

I modified the test a little bit, packing into the loop 10 times the same operation (add, mul, div) and reducing the loop count by a factor of 10. Some sample numbers: ESP32 MP : 204 MHz, 1.009 s, 1.201 s, 2.289 s, 8.514 s ESP32 MP with PSRAM: 240.0 MHz, 1.308 s, 1.498 s, 6.74 s, 15.189 s LoPy4: 160...

Just a few other numbers: Teensy 3.6. 180Mhz, 2.65s, 2.78s, 4,14s, 12.2s Pycom LoPy4: 160MHz, 5.75s, 6.07s, 10.1s, 17.6s Pcom LoPy: 160MHz, 5.7s, 5.9s, 8.3s, --- LoBo ESp32 SPRAM: 240MHz, 4.04s, 4.15s, 18.9s, 19.3s The Pi test shows a substantial variation. The low values for the Div test of the ESP...

Very interesting is the comparison of the ESP32 modules with and without PSRAM. That matches the subjective impression, that devices w/o PSRAM are way more responsive.

Did you try to vary the flash mode?

when exec repl, after password confirmation

Would you like to reboot now? (y / n)

I receive the following error message

Where does that come from? The ESP32 does not ask for a password and the reboot question.

I recorded firmware

Do you mean you flashed the firmare to the device.
By which means did you do that. A convenient way is to use the command:

make deploy

And after flashing the firmware to the device you get a REPL prompt?

You can see that in the ESP32 Makefile at the line: ESPIDF_SUPHASH := 30545f4cccec7460634b656d278782dd7151098e So it's the one with the hash 30545f4cccec7460634b656d278782dd7151098e I recall having used the command: git submodule update --init --recursive in both the esp-idf source tree and in the m...

Tried the same & agree. Also for __add__, the viper decorator leads to a compiler error, requiring more changes.
Trivial lesson learned. Viper & native code is not always a method for gaining speed.

Some more trials: a single inverse() call does not affect the speed gain of viper in the other operations. I used a float multiply for tests instead. However, the speed advantage for float operations compared to native code is not really big. Viper 3.1 µs native 5.5 µs plain: 8 µs Since the test als...