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by ejolson
Wed Jun 23, 2021 6:42 am
Forum: General discussion
Topic: lost the email for my licenses how can I go about getting my licenses again?
Replies: 6
Views: 362

Re: lost the email for my licenses how can I go about getting my licenses again?

rpdom wrote:
Wed Jun 23, 2021 3:12 am
When you do get the Licence keys back, apply them to your Pi as soon as possible. Then it doesn't matter if you lose them again - they will be permanently set on that Pi.
How does that work? Do the license keys survive an SD card reformat?
by ejolson
Tue Jun 22, 2021 3:38 am
Forum: General discussion
Topic: Any plans to use the C0 stepping for the Pi4B?
Replies: 10
Views: 575

Re: Any plans to use the C0 stepping for the Pi4B?

does anyone know if there are plans to use the C0 stepping of the BCM2711 also for the Pi4B at some point in the future? EDIT: The real question is, why do you care? And what difference will it make? Why the person making the original post cares and what difference it makes are not the questions. I...
by ejolson
Tue Jun 22, 2021 3:07 am
Forum: Other programming languages
Topic: Julia the Language
Replies: 136
Views: 11035

Re: Julia the Language

Greetings; I have a Raspberry Pi 3B+ and I unzipped Julia 1.6.1 from https://julialang.org/downloads/platform/#linux_and_freebsd and shown below chrome_wqIQ22qnfh.png In your blog, you used the Julia 1.6.0 build. From the terminal or _______, how do I run Julia? I know in Windows, I search for the ...
by ejolson
Mon Jun 21, 2021 3:36 pm
Forum: Compute Module
Topic: Performance wise, why use NVMe?
Replies: 12
Views: 339

Re: Performance wise, why use NVMe?

Performance wise, why use NVMe? I have a 8GB RAM 32GB eMMC CM4, I tested an overclock and got 2200 arm freq and 750 gpu freq. It's nice and fast and boots very quick. I have a NVMe 500GB drive that I was using. testing the eMMC now and performance wise, there's not a massive difference IMO. I see h...
by ejolson
Mon Jun 21, 2021 2:42 pm
Forum: Beginners
Topic: Limits of Raspberrypi Zero W
Replies: 4
Views: 200

Re: Limits of Raspberrypi Zero W

Hi I have a plan to create a small object following robot something like Cozmo Anki. The question is, does Pi zero have enough power to run example TensorFlow or some other programme smoothly? Everybody advises 4GB RAM at least. My opinion is that TensorFlow will not run in any reasonable way on a ...
by ejolson
Mon Jun 21, 2021 12:52 pm
Forum: Advanced users
Topic: How to migrate to new distro
Replies: 2
Views: 134

Re: How to migrate to new distro

Is there a guide somewhere about how to migrate from one raspberry distro to another? For instance, can I export a list of all installed packages and reinstall on the new distro? What folders should I back up and which can be ignored? I assume that /home, /usr/local/bin and maybe /etc can be copied...
by ejolson
Mon Jun 21, 2021 12:31 pm
Forum: General discussion
Topic: Is Purchasing Pi Zero in Larger #'s Possible?
Replies: 16
Views: 605

Re: Is Purchasing Pi Zero in Larger #'s Possible?

The unit costs more than a zero and draws more power as well as being a little larger, but is readily available for bulk orders (stock permitting) and will not cost much more than bulk buying zeros. (the last figure I heard was $20USD per piece. A pi3A+ costs $25USD retail) At Micro Center the pric...
by ejolson
Sun Jun 20, 2021 1:40 am
Forum: Beginners
Topic: Are there any cases that can fit a 2.5 sata ssd and hdd?
Replies: 12
Views: 376

Re: Are there any cases that can fit a 2.5 sata ssd and hdd?

ITX cases are for PC motherboards with mini ITX form factor.. it has plenty of room for RPi "B form factor" boards, 2 x 2.5" HDDs, and probably other stuff that you can stuff into it. look for it from one of your fave online shopping sites, or go to your nearest PC hardware shop... i...
by ejolson
Fri Jun 18, 2021 4:44 pm
Forum: Off topic discussion
Topic: Tips on a Good FFF/FDM 3D Printer [SOLVED]
Replies: 10
Views: 461

Re: Tips on a Good FFF/FDM 3D Printer

mahjongg wrote:
Fri Jun 18, 2021 1:05 pm
sorry but this post is too off topic, will delete later
I think people used to make their own 3D printers with a Pi as the controller. That would definitely be different than a low quality imported one.
by ejolson
Fri Jun 18, 2021 3:24 pm
Forum: Troubleshooting
Topic: SD Card - Diagnostics
Replies: 13
Views: 349

Re: SD Card - Diagnostics

I agree it would be nice if Pi Diagnostics also tested power supply, cooling and over-clock settings among others. I have actually found a thread.. here where it states that this is the first in a series to tests in development. that was dated March 2020 though That makes it sound like the develope...
by ejolson
Fri Jun 18, 2021 3:14 pm
Forum: Official Foundation Display
Topic: Glass pulling away from frame
Replies: 4
Views: 238

Re: Glass pulling away from frame

Waiter21 wrote:
Fri Jun 18, 2021 1:21 pm
There seemed to be a 0.2mm difference between older versions and newer versions. We'd need to get more samples of these measurements
8.35 for new, 8.55 for old
Yikes. That's a pretty big difference. How many of the new screens do you have?
by ejolson
Fri Jun 18, 2021 2:52 pm
Forum: Troubleshooting
Topic: SD Card - Diagnostics
Replies: 13
Views: 349

Re: SD Card - Diagnostics

It only repeats tests if it fails any of the four. It repeats u til it passes all four or fails three times. Why does the SD card test repeat on failure rather than success? My experience is that a substandard or failing SD card quickly gets worse upon repeated tests. That's a bad thing that could ...
by ejolson
Thu Jun 17, 2021 8:42 pm
Forum: Off topic discussion
Topic: "Right to Repair Legislation and the Raspberry Pi"
Replies: 147
Views: 5500

Re: "Right to Repair Legislation and the Raspberry Pi"

Under right-to-repair the manufacturer would have to provide parts (whether software orientated or not) for the legally specified life, I can't see that ever being 20 years or above which should be easily achievable by SSDs. I think the maximum archival storage life of a seldom written to SSD is 10...
by ejolson
Wed Jun 16, 2021 1:22 pm
Forum: Off topic discussion
Topic: "Right to Repair Legislation and the Raspberry Pi"
Replies: 147
Views: 5500

Re: "Right to Repair Legislation and the Raspberry Pi"

The right to correct the law will make life very easy for many people. The right to fix code, including algorithms that make decisions that have no redress under law? Fix the software as well as the hardware ;) I've often wondered how they define the difference between hardware and software, both a...
by ejolson
Wed Jun 16, 2021 12:17 pm
Forum: Beginners
Topic: Mirror ext4 to NTFS HDD advice?
Replies: 6
Views: 249

Re: Mirror ext4 to NTFS HDD advice?

There are two main issues with syncing ext4 to NTFS: As already mentioned poor write performance. Compunded by everything needing to go through a PCIe x1 link twice. Loss of all metadata - owner, group, permissions, etc as they are not supported by NTFS. There's not a lot that can be done except li...
by ejolson
Mon Jun 14, 2021 1:40 pm
Forum: C/C++
Topic: Schrödinger's Code - Undefined behavior in theory and practice
Replies: 85
Views: 3244

Re: Schrödinger's Code - Undefined behavior in theory and practice

VLA's are an interesting case. VLA's turned out be a really bad idea that the standards guys have done there best to expunge. I don't know so it would be interesting to know the history of VLA's. Who's idea was it? Where did it come from? Why did anyone think it was a good idea? Though I'm not cert...
by ejolson
Sun Jun 13, 2021 3:31 pm
Forum: C/C++
Topic: Schrödinger's Code - Undefined behavior in theory and practice
Replies: 85
Views: 3244

Re: Schrödinger's Code - Undefined behavior in theory and practice

Even in the embedded system world we mostly see people using GCC or whatever. Not anything the hardware vendor created. You are clearly not in the embedded market or you would not make that comment and further discussion is thus pointless. Actually, I would really like you to tell what programming ...
by ejolson
Sun Jun 13, 2021 4:35 am
Forum: Other
Topic: Raspberry Pi OS or another Distribution for a systemd free server?
Replies: 26
Views: 2344

Re: Raspberry Pi OS or another Distribution for a systemd free server?

BTW, I think most people can live without dbus and udev and all that stuff to support "hot swapping" USB sticks. No big loss there. Au contraire! Plugging in and out USB devices happens all the time. Would be a massive loss to take that out. Raspberry Pi OS uses systemd. That won't be cha...
by ejolson
Fri Jun 11, 2021 5:05 pm
Forum: C/C++
Topic: Schrödinger's Code - Undefined behavior in theory and practice
Replies: 85
Views: 3244

Re: Schrödinger's Code - Undefined behavior in theory and practice

Even if the C standard board made the standard the manufacturers of the CPU's won't accept it and ultimately demand their compiler vendors ignore it. Remember the CPU vendor sells us programmers the compiler (one off cost or annual subscription) and ultimately they decide if the standard lives or d...
by ejolson
Fri Jun 11, 2021 4:18 pm
Forum: C/C++
Topic: Schrödinger's Code - Undefined behavior in theory and practice
Replies: 85
Views: 3244

Re: Schrödinger's Code - Undefined behavior in theory and practice

x = y + z; That is signed addition and there are multiple things that can happen on different CPU's and DSP's if it rolls It will remain undefined in C as a common implementation on all CPU cores can't be done they don't have the traps in silicon to do it Even if the C standard board made the stand...
by ejolson
Fri Jun 11, 2021 2:43 pm
Forum: Networking and servers
Topic: Is it Safe to Use Different Types of NAS Drives for A Pi Samba Server?
Replies: 12
Views: 480

Re: Is it Safe to Use Different Types of NAS Drives for A Pi Samba Server?

I have Pi4B 8 GiB setup to run a Samba share from a Seagate IronWolf ST2000VN004 64MB 2TB drive in an external HDD enclosure along with a ~10 year old WD Red 1 TB drive that still works OK (I'm not using any variant of RAID). I have it set up so that each drive has a share of its own. Is it safe to...
by ejolson
Fri Jun 11, 2021 2:08 pm
Forum: Other
Topic: Amazon Linux installation on Raspberry PI4
Replies: 3
Views: 258

Re: Amazon Linux installation on Raspberry PI4

Hello, Amazon Linux os compatible with Raspberry pi 4? REF: https://aws.amazon.com/amazon-linux-2/ Amazon Linux 2 is the next generation of Amazon Linux, a Linux server operating system from Amazon Web Services (AWS). It provides a secure, stable, and high performance execution environment to devel...
by ejolson
Fri Jun 11, 2021 12:53 pm
Forum: Networking and servers
Topic: Is it Safe to Use Different Types of NAS Drives for A Pi Samba Server?
Replies: 12
Views: 480

Re: Is it Safe to Use Different Types of NAS Drives for A Pi Samba Server?

I have Pi4B 8 GiB setup to run a Samba share from a Seagate IronWolf ST2000VN004 64MB 2TB drive in an external HDD enclosure along with a ~10 year old WD Red 1 TB drive that still works OK (I'm not using any variant of RAID). I have it set up so that each drive has a share of its own. Is it safe to...
by ejolson
Fri Jun 11, 2021 1:13 am
Forum: C/C++
Topic: godbolt compiler explorer
Replies: 10
Views: 531

Re: godbolt compiler explorer

Perhaps you might want to get in contact with them to provide "Raspberry Pi OS 64bit" as option as well ... It already supports Clang and GCC compilations for Aarch64. GCC is supported from version 5.4 to the latest which is 11.1 Clang is supported from 9 to 11 and trunc. The OS release s...
by ejolson
Thu Jun 10, 2021 10:49 pm
Forum: C/C++
Topic: gmp (Gnu multiple precision arithmetic lib) 5x faster on intel i7 than on Pi400 (two samples)
Replies: 138
Views: 7545

Re: gmp (Gnu multiple precision arithmetic lib) 5x faster on intel i7 than on Pi400 (two samples)

I copied over factorize executable to the Xeon box. Surprisingly factorize execution there is 60% slower than on i7: My experience is that good performance from the Intel scalable gold, silver and platinum processors requires up-to-date libraries and compilers. With GCC, for example, you may want t...

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