How is shipping cost and time from UK? Assuming that is where you are getting it.
I bought the Pi 4 cana kit from here: https://www.canakit.com/ . Canada I believe. The Pi 4 arrived in 3 days with power brick, heat sinks (cant use them with the fan).
The Pi case and fan came from Pimoroni via Royal mail/USPS. I don't recall the shipping cost but it took about 8 days. The case and fan were wrapped in bubble wrap. It arrived ok but ....
In the pic below you see the Pi 4 in the Pimoroni case with cooling fan. The fan is held in place by friction on the 40 pin header. The bolts/screws you see bolt the fan to a "U" shaped circuit board under the fan which in turn slides over 6 pins on the 40 pin header.
The image below shows a more detailed look at how the fan connects to the Pi's 40 pin header.
I got a Pi3 to boot from a ~200 gig usb thumb drive today. Not an SD card in sight. The methodology will not work on a Pi 4. I was not too impressed. The Pi3 was quite slow to respond. Could be due to the lack of USB 3.0 ports. I cant be sure. I do not believe it was due to the "size" of the USB thumb drive.
Anyway booting from a USB thumb drive is coming to the Pi 4. They are working on it. No time line given but for now it is not possible unless you do it the old way /boot on the sd card and /root on the usb.
"Raspberry Pi 4 cooling with Pimoroni Fan SHIM, 52Pi ICE Tower Cooler, and Noctua 40mm fan in 3D printed mount. Includes Sysbench CPU stress tests, and comparison of results with passive cooling in my earlier “Raspberry Pi 4 Cooling” video:"
It seems the Raspberry Pi foundation have an experimental 64 bit kernel they’re testing. Before you all rush out and install it though there is already a bug report of the BRP4 apps crashing straight away. It would seem aarch64 (that’s the ARM 64 bit architecture) doesn’t like running (some/all) armhf apps. I have asked Bernd if we could get the 1.47 app recompiled as aarch64.
Would be nice to have aarch64 application. I was trying to compile BRP4 from scratch on 64 bit kernels - Orange Pi, Jetson Nano. Seems that a build script is a bit outdated.
It performs well, some Parts of the Code are rewritten to take advantage of the NEON-SIMD-Engine.
Performance is nearly doubled compared to the orginal app.
I also have a variant of the FGRP for Aarch64. Which gives you around 3-4x times the RAC compared to running the orignal BRP-App. But it requires around 1GB of RAM per Core.
You can take a look on my devices to so how it performs:
It is not that simple to compile the BRP-App for Aarch64, even if you can fix
the Buildscript, Aarch64 uses different FMA-Instructions that would lead to a high rate of
invalids .
Does the Pi 4 model B have FMA capability? If it does perhaps we could get this added as a project supplied beta app if you’re willing. They might also be interested in the FGRP app as well. Can you PM Bernd and let him know, assuming you are willing to give build instructions and source code.
How is shipping cost and time
)
How is shipping cost and time from UK? Assuming that is where you are getting it.
poppageek wrote:How is
)
I bought the Pi 4 cana kit from here: https://www.canakit.com/ . Canada I believe. The Pi 4 arrived in 3 days with power brick, heat sinks (cant use them with the fan).
The Pi case and fan came from Pimoroni via Royal mail/USPS. I don't recall the shipping cost but it took about 8 days. The case and fan were wrapped in bubble wrap. It arrived ok but ....
Here are some pics with
)
Here are some Pi 4 pics with comments:
In the pic below you see the Pi 4 in the Pimoroni case with cooling fan. The fan is held in place by friction on the 40 pin header. The bolts/screws you see bolt the fan to a "U" shaped circuit board under the fan which in turn slides over 6 pins on the 40 pin header.
The image below shows a more detailed look at how the fan connects to the Pi's 40 pin header.
I got a Pi3 to boot from a
)
I got a Pi3 to boot from a ~200 gig usb thumb drive today. Not an SD card in sight. The methodology will not work on a Pi 4. I was not too impressed. The Pi3 was quite slow to respond. Could be due to the lack of USB 3.0 ports. I cant be sure. I do not believe it was due to the "size" of the USB thumb drive.
Anyway booting from a USB thumb drive is coming to the Pi 4. They are working on it. No time line given but for now it is not possible unless you do it the old way /boot on the sd card and /root on the usb.
"Raspberry Pi 4 cooling with
)
"Raspberry Pi 4 cooling with Pimoroni Fan SHIM, 52Pi ICE Tower Cooler, and Noctua 40mm fan in 3D printed mount. Includes Sysbench CPU stress tests, and comparison of results with passive cooling in my earlier “Raspberry Pi 4 Cooling” video:"
https://youtu.be/e6mWImsF9iI
Great video. If you can, try
)
Great video. If you can, try the official POE hat. I ran your test with no other cooling except the fan on the POE hat and never got above 67.
It seems the Raspberry Pi
)
It seems the Raspberry Pi foundation have an experimental 64 bit kernel they’re testing. Before you all rush out and install it though there is already a bug report of the BRP4 apps crashing straight away. It would seem aarch64 (that’s the ARM 64 bit architecture) doesn’t like running (some/all) armhf apps. I have asked Bernd if we could get the 1.47 app recompiled as aarch64.
MarksRpiCluster
Would be nice to have aarch64
)
Would be nice to have aarch64 application. I was trying to compile BRP4 from scratch on 64 bit kernels - Orange Pi, Jetson Nano. Seems that a build script is a bit outdated.
It is not that simple to
)
It is not that simple to compile the BRP-App for Aarch64, even if you can fix
the Buildscript, Aarch64 uses different FMA-Instructions that would lead to a high rate of
invalids.
But you could try my aarch64-App, original made for the Ordoid-C2:
https://einsteinathome.org/de/content/high-speed-linux-brp-app-odroid-c2
It performs well, some Parts of the Code are rewritten to take advantage of the NEON-SIMD-Engine.
Performance is nearly doubled compared to the orginal app.
I also have a variant of the FGRP for Aarch64. Which gives you around 3-4x times the RAC compared to running the orignal BRP-App. But it requires around 1GB of RAM per Core.
You can take a look on my devices to so how it performs:
e.g: NanoPi M4(running only a 5 of 6 cores, due to lack of RAM): https://einsteinathome.org/de/host/12761351
Rock64: https://einsteinathome.org/de/host/12763126/
Send me a PM if you want to give it a try.
N30dG-ARM wrote:It is not
)
Does the Pi 4 model B have FMA capability? If it does perhaps we could get this added as a project supplied beta app if you’re willing. They might also be interested in the FGRP app as well. Can you PM Bernd and let him know, assuming you are willing to give build instructions and source code.
Raspberry Pi 4 Model B Rev 1.1
/proc/cpuinfo: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
Linux *** 4.19.75-v7l+ #1270 SMP Tue Sep 24 18:51:41 BST 2019 armv7l GNU/Linux
I'm running the armhf kernel, might be different under the aarch64 kernel.
MarksRpiCluster