Teensy 4.0 First Beta Test

[defragster]

Here's a CPU speed benchmark I've been using. Tonight I finally took a few moments to clean it up, add some comments in the code, and run the test on several boards (see the readme file).

https://github.com/PaulStoffregen/RSA_signature_speed

Safe to assume those are default clock speed numbers 180/120/96 of 3.6/3.5/3.2 ?

<edit> Indeed a T_3.6 at 256 MHz gives: Signature computation took 0.333 seconds { versus the posted 0.474 }

To compare - I just got some 240 MHz Dual Core ESP32 PICO based 'TinyPICO' boards. The code as published ran one pass on task in the indicated time 0.518.

Revisiting a quick Task done on each core RTOS version {std Arduino} showed that each core in parallel showed about the same result. I had to tweak to get the loops down to 6 and put in to not trigger the RTOS watchdog

To hope the two collided I did for() runs of 6 passes, one rsa_init() in setup() and then two versions of the rsa_sign code with unique signature[] strings used, then tested the state of the string after the 6th iteration - this shows the first two groups of 6 on each core - after this they hold at the .51 number:

Task1: 6 iterations in us=3072821	Signature computation took 0.512 seconds
Signature is good :-)

Task0: 6 iterations in us=3063082	Signature computation took 0.511 seconds
Signature is good :-)

Task1: 6 iterations in us=3059924	Signature computation took 0.510 seconds
Signature is good :-)

Task0: 6 iterations in us=3062031	Signature computation took 0.510 seconds
Signature is good :-)

So a T_3.6 at 256 MHz - 50% faster on one core loses ~30% to the ESP32 even if both 240 MHz cores are "used" - and a T_4 at 600 MHz with 0.085 is 3 times faster than even the 0.510/2 counting both cores.

@mjs513 - I wonder what your TeensyThreads on T4 would show running it similarly on two threads?

[PaulStoffregen]

I also cleaned up the CoreMark benchmark.

https://github.com/PaulStoffregen/CoreMark

This copy has all the "no edits allowed" files unchanged, and as far as I know the porting I did is well within what's allowed to be claimed as a valid CoreMark result.

It prints to proper Serial on all Arduino compatible boards, so you can benchmark almost any board if it has enough RAM.

Safe to assume those are default clock speed numbers 180/120/96 of 3.6/3.5/3.2 ?

Yes, I tested every board with its default settings. Same for CoreMark - the results in the readme file are with default settings. Yes, I know Teensy 4.0 can do a little better if the other optimizations are used.

[mjs513]

@mjs513 - I wonder what your TeensyThreads on T4 would show running it similarly on two threads?

Should have posted this before. My WIP TeensyThreads_t4 version is posted up on GitHub - https://github.com/mjs513/TeensyThre...ensyThreads_t4.

I just woke up to all this activity and haven't even had my coffee yet Oh boy.

EDIT: Just tried running in a thread - can't seem to get it run properly from within the thread. Thread never seems to return. Probably something conflicting in other tab functions.

[defragster]

offline here - but just put this up that shows the shifting for 2 cores as noted above. TinyPICO/.../RSA_signature_speed

<Updated > minor tweaks to github of ESP32 PICO using RTOS - no speed improvement - just Task adjust playing - And updated Speed table and notes in readme.

NXP's ARM core in Teensy 3.6 and 4 more efficient at this task

[mjs513]

To test TeensyThreads I resurrected my GPS sketch that runs in a thread for a test. The GPS is BN-280 with PPS broken out. So was able to also test a PPS signal of 2000Hz with the freqCount library. To change the PPS I used @ChrisO.'s ublox library which allows provisions to change the PPS rate. Needless to say it was right on at 2000Hz.

As for the GPS running in a thread it worked without a problem.

[manitou]

Here's a CPU speed benchmark I've been using. Tonight I finally took a few moments to clean it up, add some comments in the code, and run the test on several boards (see the readme file).

https://github.com/PaulStoffregen/RSA_signature_speed

Here's a few more MCU's doing RSAsign

      T4@600     0.085 seconds   faster
      T3.6@180   0.474   
      T3.5@120   0.910
      T3.2@120   1.223
      ESP32@240  0.516
      M4@120     0.816  faster   SAMD51
      DUE@84     1.901
      dragon@80  1.162 faster   dragonfly STM32L476
      maple@72   1.964  faster
      cpx@48     9.496  circuit playground express SAMD21
      ZERO@48   11.022
      1284p@16 119.068    16K  enough

Teensy LC and 2++ and MEGA2560 won't work -- need more than 8K RAM?

The benchmark is based on mbedtls. The NXP SDK has upgraded their lib's (mbedlts and wolfssl) to take advantage of MCU's crypto accelerators (CAU or DCP) for hashing (SHA256) and secret-key encryption (AES). One could also construct and test the benchmark on desktop's and Raspberry PI using OpenSSL or mbedtls

T4 cypto accelerator DCP tests

more MCU performance comparisons crypto, floating point, coremark

[PaulStoffregen]

Ok, it's official - Teensy 4.0 has been release is starts shipping today.

https://www.pjrc.com/store/teensy40.html

It's now ok to post photos of the best test hardware.

[ETMoody3]

Yoiks and away!

[KurtE]

Not sure if Best hardware, but been playing around some with:


Also I have some other boards I have fabricated but have not assembled one yet:

[ETMoody3]

@KurtE

I like that, are they available?

[skpang]

Which port is the CAN FD ? Hope is not on the back side. Can't tell from the pinout card.

[mjs513]

Ok, it's official - Teensy 4.0 has been release is starts shipping today.

https://www.pjrc.com/store/teensy40.html

It's now ok to post photos of the best test hardware.

Fantastic - time for videos and pictures like Kurt's.

[mjs513]

Which port is the CAN FD ? Hope is not on the back side. Can't tell from the pinout card.

Back side - pins 30, 31, CRX3, CTX3

[skpang]

Back side - pins 30, 31, CRX3, CTX3

Oh, that is going to be a pain to get access to.

What is the best way to access to those pins when designing a board for T4 ?

[Theremingenieur]

Ok, it's official - Teensy 4.0 has been release is starts shipping today.

https://www.pjrc.com/store/teensy40.html

It's now ok to post photos of the best test hardware.

Congratulations!

A huge Thank You to Paul, the PJRC crew, and the beta testers/contributors!

Unfortunately, I was (and I am still) "under water" with lots of other things going on and could neither test nor contribute. But I'm happy to see that the T4 has now come to market, even without crowdfunding, and I wish it a huge success!

[Scientist]

Great news!

I know this is hot off the press, but any preliminary thoughts on the evolution of the 4.0, will there be a 4.6 with more available I/O pins and an SD card slot?

We have several hardware devices we use in scientific balloon projects that are based on the 3.6, and it would be great if we could migrate these to a 4.6 to take advantage of the new performance and features.

[mjs513]

Oh, that is going to be a pain to get access to.

What is the best way to access to those pins when designing a board for T4 ?

Don't know if there is a best way but two ways that have been used are with pogo pins or with SMD header. For one of the breakout boards that I created I am using the SMD header on the underside pins and pogo pins for the USBHost connector. Here is a photo of the breakout board and the underside of one of the Beta T4 boards we used for testing.

[wcalvert]

Ok, it's official - Teensy 4.0 has been release is starts shipping today.

https://www.pjrc.com/store/teensy40.html

It's now ok to post photos of the best test hardware.

Congratulations Paul! I just bought 5 of them.

[defragster]

Ok, it's official - Teensy 4.0 has been release is starts shipping today.

https://www.pjrc.com/store/teensy40.html
…

Congratulations and that is Awesome news PJRC!

Especially for that $19.95 - price point!

[jdev]

Ok, it's official - Teensy 4.0 has been release is starts shipping today.

https://www.pjrc.com/store/teensy40.html

It's now ok to post photos of the best test hardware.

Congrats on the release! The benchmarks are off the charts!

[Haybur]

I've checked this thread often just to see the crazy stuff being tested. I can't say I fully understood any of it but it was awesome to watch all the contributors working on this together. Congratulations to everyone and my hat is off to you Paul!

[CorBee]

Congrats on the release !

[wcalvert]

Just FYI, the Teensy 4.0 page is showing the topside pinout twice.

[KurtE]

@KurtE

I like that, are they available?

If you mean are they available for purchase... Not exactly

I do often put some of the designs I am working with up on github in a hodge podge of stuff: https://github.com/KurtE/Teensy3.1-Breakout-Boards
There as Diptrace Design and layout files for these, plus a zip file that you can send off to places like: OSHPark, Seeedstudio, pcbway...

For the one partially assembled board, I put up a xls file with parts on it, which is probably only partially correct. I just updated it a little as I found earlier I called out the wrong resistors for R11 and R12...

Again I only do this for my own fun, so guarantee it is good for anything. Also I have not fully assembled one yet. Like I have not put on a ILI9341 display (PJRC) on it yet. So I have not populated the two transistors that allow you to control the brightness... Also Have not put on it a LoRa, so don't remember what all I have not put on it yet... And I only just started to play around with Robotis Servos, And I have not tried out the USB on it yet. The version you see had issue with power chip on bottom, which I updated and got new boards, but have not built one yet...

[defragster]

Just FYI, the Teensy 4.0 page is showing the topside pinout twice.

Yes, it is - it was right until I did a refresh.