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by pica200
Sun Aug 25, 2019 9:30 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 273
Views: 45311

Re: Why moving to 64bit?

Yeah, not saying it will never happen. There will be no choice as software eventually moves away from 32 bit but a few missing/broken packages is not reason enough yet (at least for RPiF/T). In my opinion it's totally worth it but there may still be bugs or you have to fiddle with settings to workar...
by pica200
Sat Aug 24, 2019 8:09 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 273
Views: 45311

Re: Why moving to 64bit?

If you wanna use a 64 bit distro use one of the unofficial ones. Don't count on Raspian 64 bit any time soon. I switched to one recently and got most issues solved now. Running pretty good and having the familar xfce de is a bonus. On a side note: Firefox is now beating Chromium from Raspian and run...
by pica200
Sat Aug 24, 2019 2:49 pm
Forum: General discussion
Topic: Possible to add GLES EXT_buffer_storage driver support to Videocore VI on the Pi4?
Replies: 34
Views: 6614

Re: Possible to add GLES EXT_buffer_storage driver support to Videocore VI on the Pi4?

Not sure what you're running but my Gentoo 64 build runs fine in the desktop environment and Firefox. Firefox isn't on par with Chromium on Raspbian but it's fast and responsive in everything but youtube playback. Manjaro ARM. And turns out it was window compositing slowing everything down. Now it'...
by pica200
Fri Aug 23, 2019 5:12 pm
Forum: General discussion
Topic: Possible to add GLES EXT_buffer_storage driver support to Videocore VI on the Pi4?
Replies: 34
Views: 6614

Re: Possible to add GLES EXT_buffer_storage driver support to Videocore VI on the Pi4?

Your Firefox lag problems may be more software-specific than something intrinsic to VC6. Chromium runs WebGL demos 3x faster than Firefox and it's hardly implemented efficiently. It's not FF. It's the entire desktop environment. There is no way it can run GC games fullspeed with the current driver....
by pica200
Fri Aug 23, 2019 4:08 pm
Forum: General discussion
Topic: Possible to add GLES EXT_buffer_storage driver support to Videocore VI on the Pi4?
Replies: 34
Views: 6614

Re: Possible to add GLES EXT_buffer_storage driver support to Videocore VI on the Pi4?

Well, i would not get my hopes up Dolphin will run at even remotely playable speeds with the current driver. On 64 bit kernel + userland there seem to be performance issues generally right now to the point where GPU rendering lags behind a few hundred milliseconds (noticeable in many places in the d...
by pica200
Fri Aug 23, 2019 7:16 am
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 273
Views: 45311

Re: Why moving to 64bit?

While I'm not an expert, it is notable that wireguard --the fast, modern, secure VPN tunnel--avoids AES entirely. Wireguard instead employs chacha20 from the danceable-name family of cyphers. Not an expert either but i'm sceptical if this is as secure as they say. Curve 25519 is proven secure and t...
by pica200
Fri Aug 23, 2019 5:39 am
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 273
Views: 45311

Re: Why moving to 64bit?

I wonder how many of these whingers can actually code? Are you implying people who spent money on a product have no voice when they are not capable of coding the software for it themselves? This is not how it works... _________________________________________________________________________________...
by pica200
Thu Aug 22, 2019 3:21 pm
Forum: Off topic discussion
Topic: Solder Question
Replies: 13
Views: 2507

Re: Solder Question

Lead free is only needed to meet RoHs conformity which i don't think is needed in schools (unless they want to sell stuff built with it). I don't know if they banned it outside of this requirement so still not sure. I guess you can ask them if they need some and are allowed to take leaded solder. Th...
by pica200
Thu Aug 22, 2019 1:10 pm
Forum: General discussion
Topic: What Memory is required to run webserver
Replies: 7
Views: 1619

Re: What Memory is required to run webserver

Headless you will be fine with the 1 GB model. If you can go for nginx instead. It's faster and less bloated than Apache.
by pica200
Thu Aug 22, 2019 10:19 am
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 273
Views: 45311

Re: Why moving to 64bit?

This is what i have been using for the past week.And believe it or not Firefox was already working better without GPU driver than ESR on Raspian. And on top of that now that the GPU driver landed in the kernel (need to rename fbturbo config) Firefox is even working with acceleration force enabled wh...
by pica200
Wed Aug 21, 2019 5:25 pm
Forum: General discussion
Topic: Ideal SD Card Size for Raspberry PI 4
Replies: 16
Views: 3601

Re: Ideal SD Card Size for Raspberry PI 4

I paid like 11€ for a 64GB A1 from SanDisk which i could not believe when i saw it. I did not plan to buy it but when i ordered the Pi 4 i was just 10€ under free shipping so this was a perfect fit :D In the end i think this was a good choice since i have no other A1 rated card.
by pica200
Tue Aug 20, 2019 8:31 pm
Forum: General discussion
Topic: Fastest Micro SD card for Pi 4? Does it support XC U3?
Replies: 38
Views: 37962

Re: Fastest Micro SD card for Pi 4? Does it support XC U3?

As someone in the comments of the blogpost pointed out there seems to be support for command queue already which makes me wonder what is going on? https://github.com/raspberrypi/linux/bl ... st/cqhci.c

Is that driver not stable yet? Is it exclusively for eMMC?
by pica200
Tue Aug 20, 2019 4:28 pm
Forum: Off topic discussion
Topic: Reading material for ARM architecture?
Replies: 4
Views: 1707

Re: Reading material for ARM architecture?

If you wanna have the very technical stuff: Cortex-A72 Technical reference manual: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.100095_0001_02_en/index.html Architecture reference manual: https://developer.arm.com/docs/ddi0487/latest/arm-architecture-reference-manual-armv8-for-armv8-a...
by pica200
Tue Aug 20, 2019 4:11 pm
Forum: Gentoo
Topic: Bootable 64-bit Gentoo image for the RPi4 released (Xfce4 desktop)
Replies: 53
Views: 28472

Re: Bootable 64-bit Gentoo image for the RPi4 released (Xfce4 desktop)

I was about to recommend adding +simd to the -march part but then i realized it's on by default on ARMv8-A: https://gcc.gnu.org/onlinedocs/gcc-9.1. ... 64-Options
by pica200
Tue Aug 20, 2019 10:38 am
Forum: General discussion
Topic: Raspberry pi 4 not booting after attempting to install Windows 10 WOA
Replies: 3
Views: 1425

Re: Raspberry pi 4 not booting after attempting to install Windows 10 WOA

If really nothing boots anymore you can try the instructions under the recovery section here: https://www.raspberrypi.org/downloads/
by pica200
Mon Aug 19, 2019 2:32 pm
Forum: General discussion
Topic: USB problem on Pi 4B
Replies: 35
Views: 7655

Re: USB problem on Pi 4B

I don't trust generic stuff with my hard disks, although it seems branded stuff can be just as bad. Not sure about NTFS performance on the Pi 4, but when I tried it on the Pi 3 it was pretty awful. You should get better performance with ext4, although you then obviously lose the ability to detach i...
by pica200
Mon Aug 19, 2019 10:28 am
Forum: General discussion
Topic: USB problem on Pi 4B
Replies: 35
Views: 7655

Re: USB problem on Pi 4B

From what I can gather from googling it, ASM1153E is meant to be one of the better chips, although it depends on the implementation. What is the make and model of the adaptor you have with that chip in it? I've got a startech.com S2510BMU33 which uses the ASM1153E chip and it seems to work well on ...
by pica200
Sun Aug 18, 2019 3:49 pm
Forum: General discussion
Topic: USB problem on Pi 4B
Replies: 35
Views: 7655

Re: USB problem on Pi 4B

I think i got one of these quirky enclosures aswell (it's like 5 years or so old at this point). On Pi 4 with 64 bit kernel it detects it's a bad one and uses the old driver which at least gives 108 MiB/s (SATA HDD). On my main machine it does not detect it as bad drive and it uses the uas driver re...
by pica200
Sun Aug 18, 2019 12:08 pm
Forum: C/C++
Topic: Looking for advice with C++ learning
Replies: 29
Views: 7899

Re: Looking for advice with C++ learning

Some of the issues above are caught by the compiler already. -Wall and -Wextra are really helpful. And i have not seen a format string vulnerability in ages so don't worry about printf() ;) This is assuming you don't use a stone age version of gcc which has far worse detection than newer gcc. You sh...
by pica200
Sat Aug 17, 2019 9:27 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 273
Views: 45311

Re: Why moving to 64bit?

Another thing you can try is -ftree-vectorize for the C AES code but unsure if it will do anything. -ffast-math probably does nothing since that's for floating point mainly. -mneon-for-64bits may have an effect.
by pica200
Sat Aug 17, 2019 8:43 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 273
Views: 45311

Re: Why moving to 64bit?

That's quite a huge difference with acceleration and it's not even an A72. If the next SoC revision doesn't have that i'm gonna flip a table (╯°□°)╯︵ ┻━┻ :D
by pica200
Sat Aug 17, 2019 6:22 pm
Forum: Bare metal, Assembly language
Topic: swp or ldrex/strex issue on RPI2
Replies: 8
Views: 3469

Re: swp or ldrex/strex issue on RPI2

It's noteworthy that you don't need ldrex/strex on a single core system. It's enough to temporarily disable interrupts (cpsid i) which is much more lightweight than a ldrex/strex loop aswell.
by pica200
Sat Aug 17, 2019 6:08 pm
Forum: C/C++
Topic: Looking for advice with C++ learning
Replies: 29
Views: 7899

Re: Looking for advice with C++ learning

You are doing the right thing. iostreams are hopeless and bloated. Using C++ doesn't mean you have to go full in and use everything it offers. There are many more such pitfalls which may look nice but result in horrible machine code ;) I do the same and mostly write "C with classes". I thi...
by pica200
Sat Aug 17, 2019 5:40 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 273
Views: 45311

Re: Why moving to 64bit?

Or if you feel adventurous solder in a 64 Gbit one ;)
by pica200
Sat Aug 17, 2019 5:34 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 273
Views: 45311

Re: Why moving to 64bit?

See a few posts above. This code already exists but is not used currently. Seems like no one noticed because there are barely SoCs without acceleration :roll:

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