Thanks, that's what I meant: the overall execution time.
My code is an AI inference code that executes blocks of instructions which are very similar: load arrays, perform operations.
These operations are made of several levels of for loops, with array multiplication - addition inside. I think they ...

Thanks for your answer.
If I tag a specific function to be in IRAM, will it be executed faster than if it was not tagged?

Hi,
I'd like to know more about XiP. Is it available with the Arduino IDE?

I finally found the solution, related to some compiler attriubtes not taken into account by the Arduino IDE.

Here is the only output on the serial monitor when I uncomment the last layer:

Build:Mar 27 2021
rst:0x1 (POWERON),boot:0x8 (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3818,len:0x508
load:0x403c9700,len:0x4
load:0x403c9704,len:0xad0
load:0x403cc700,len:0x29e4
entry 0x403c9880 ...

Hi, thank you for your answer.
There is no specific framework, only C functions, and they do not return error results.

Using PSRAM would be my next step. I think that if my arrays are too big for the SRAM, I would store them in PSRAM. But so far, this example does not seem to use arrays that do not ...

Some additional information:
Chip Info:
------------------------------------------
Model : ESP32-S3
Package : 0
Revision : 2
Cores : 2
CPU Frequency : 240 MHz
XTAL Frequency : 40 MHz
Embedded Flash : No
Embedded PSRAM : No
2.4GHz WiFi : Yes
Classic BT : No
BT Low Energy : Yes
IEEE 802 ...

Hi
I'm running an AI code on an ESP32S3 board equipped with 8MB PSRAM and 16MB Flash. The code is doing the inference, and all the parameters and the input data are in separate .h files.
The AI network is made of several layers, and the code works correctly and gives the correct results up to the ...

Thanks for your answer. I actually got an ESP32 S3 N16R8 which arrived today and I tried it: it behaves much better. I can go up to N = 1000000 float arrays on my test sketch.

Hi
I want to use large float arrays in a code, related to AI. So before that I want to test how much of such arrays I can load in RAM.
I wrote a code to test but I'm quite disappointed in the results.

Here is the code : it dynamically allocates a temporary array to place it in flash memory, using ...