Turbocharged Raspberry Pi 2 unleashed • Hacker News Board

Re: Turbocharged Raspberry Pi 2 unleashed

#161

Post by tonylemesmer » Mon, Feb 02, 2015, 1:24 PM UTC

rasz_pl wrote: post #36

Wonder if they fixed USB problems (dma/internal bus bottlenecking or something). Info about quad core CPU is a bit sketchy, either its one of Cortex cores, or BCM tweaked ARM11/bumped L1 cache to max 64KB value and/or added proper L2 cache. So many unknowns. Edit: Milhouse, Team-Kodi Member: "ARMv7 and NEON instructions" http://forum.kodi.tv/showthread.php?tid=217040&pid=1911780#p... . WOOOHOOO now we are cooking, Br…

Some good detail here from one of the RPi / Broadcom engineers:

http://jamesrandominfo.blogspot.co.uk/2015/02/raspberry-pi-2...

Re: Turbocharged Raspberry Pi 2 unleashed

#162

Post by menacingly » Mon, Feb 02, 2015, 1:52 PM UTC

viraptor wrote: post #77

exabrial wrote: post #37

Need gigabit!

Just curious, (if you can share) what are you doing on your RPi that saturates the 100Mb?

I would also be curious if you are able to reach 100Mb with your pi

Re: Turbocharged Raspberry Pi 2 unleashed

#163

Post by throwaway000002 » Mon, Feb 02, 2015, 2:01 PM UTC

userbinator wrote: post #84

throwaway000002 wrote: post #58

Earlier quoted context omitted.

I think aswanson is simply expressing his feelings. Broadcom has garnered goodwill from being involved with the Raspberry Pi foundation. Goodwill, I must add, from a broad swath of people who are not too technically inclined. Yes, the computer (or device if you're lacking generosity) is a god-send for those without the capacity to buy an Intel/AMD-based PC, but let's not kid ourselves: the device is less open than a…

The Odroid C1 uses an SoC from Amlogic, which is also American.

Mea culpa. I see their SOCs on all these Chinese media-boxes that I just assumed they were Chinese. How did an American company break the Chinese market like that? Impressive! I should do research on who's running that ship...

Re: Turbocharged Raspberry Pi 2 unleashed

#164

Post by throwaway000002 » Mon, Feb 02, 2015, 2:20 PM UTC

pjc50 wrote: post #135

userbinator wrote: post #125

Earlier quoted context omitted.

As much as they are "open to criticism", I very strongly doubt that they are going to use anything other than Broadcom. Do you think it is feasible to release a similarly priced, similarly capable device with completely open hardware? https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-... Certainly not as widely known as the RPi, but I'd attribute that more to a general lack of marketing/"presence" in educat…

That doesn't meet the (absurdly high) openness standard of "RTL of the processor" mentioned by throwaway000002.

My, overly-impassioned, exaggerated point is that the RPi is no better that many other competing devices on the market and should me measured solely on technical/business merit. The popularity of the device has spawned a product category of itself. However, at this point in time, claiming something about education is total rubbish. Take the old Pi, run ARMv7 QEMU on it et voila you have the new Pi. There is nothing new to learn, to grow, to probe questions about. The GPIO of the device could just as easily be be provided by a USB breakout board, etc, etc. Cypress had a $4 PSOC prototype board and if anyone (especially Cypress) bothered to develop open-source tooling for it, it would have be a far more useful device to learn from.

(As an aside: thank you to HNer asb and colleagues for the lowRISC project. Also, thank you to people like "bunnie" and "xobs" for Novena. These are real people, with real projects working with the best of intentions.)

Re: Turbocharged Raspberry Pi 2 unleashed

#165

Post by davexunit » Mon, Feb 02, 2015, 2:26 PM UTC

It still requires proprietary firmware to function at all. No thanks. Please fix this serious flaw!

Edit: And to make things worse, they are giving away gratis Windows 10 licenses for it!

Re: Turbocharged Raspberry Pi 2 unleashed

#166

Post by benn_88 » Mon, Feb 02, 2015, 2:30 PM UTC

jenscow wrote: post #131

escap wrote: post #128

Earlier quoted context omitted.

"For the last six months [ RPi team has ] been working closely with Microsoft to bring the forthcoming Windows 10 to Raspberry Pi 2. Microsoft will have much more to share over the coming months. The Raspberry Pi 2-compatible version of Windows 10 will be available free of charge to makers. Visit WindowsOnDevices.com today to join the Windows Developer Program for IoT and receive updates as they become available." ht…

I wonder if Microsoft have helped in making the PI capable of running Windows 10, for the same price.

No, it's just Broadcom and the Raspberry Pi engineering team that made the product happen. At the point we knew Pi 2 would be happening, the conversation with MS started and they started work porting Windows to it - with a little help from our engineers.

- Ben from Raspberry Pi

Re: Turbocharged Raspberry Pi 2 unleashed

#167

Post by benn_88 » Mon, Feb 02, 2015, 2:32 PM UTC

cma wrote: post #70

schappim wrote: post #4

What's the same: - Same form factor as the model B+ (your enclosures and daughter boards should still fit). - Same full size HDMI port - Same 10/100 Ethernet port - Same CSI camera port and DSI display ports - Same micro USB power supply connection What has changed: - A new turbocharged Broadcom BCM2836 900MHz quad-core system-on-chip with performance at least 6x that of the B+. - 1GB of RAM Source: http://raspberry.…

Will Mathematica still ship with it and will the 6x performance increase make it be actually usable? What's the per-core increase?

It will continue to be available, but I'm not sure what the performance increase is. There'll be a blog post on walkingrandomly.com coming in a few days - a guy who benchmarked it when it first came out. See http://www.walkingrandomly.com/?p=5220

Re: Turbocharged Raspberry Pi 2 unleashed

#168

Post by rcarmo » Mon, Feb 02, 2015, 2:38 PM UTC

brudgers wrote: post #78

The headline gave me hope. Alas no button on the front for overclocking. I am wistfully disappointed.

Jokes aside, I'm curious as to whether this can be overclocked to any extent, like its predecessor.

Re: Turbocharged Raspberry Pi 2 unleashed

#169

Post by werkshy » Mon, Feb 02, 2015, 2:49 PM UTC

viraptor wrote: post #77

exabrial wrote: post #37

Need gigabit!

Just curious, (if you can share) what are you doing on your RPi that saturates the 100Mb?

I run mine as a NAS, and the performance is pretty terrible. The portability is great though! I'm somewhat nomadic at the moment so it's great to have a 1TB NAS that I can pack in my laptop bag (1TB external 2.5" drive + rpi: minimal weight too)

Re: Turbocharged Raspberry Pi 2 unleashed

#170

Post by oddevan » Mon, Feb 02, 2015, 2:54 PM UTC

arbuge wrote: post #16

schappim wrote: post #4

What's the same: - Same form factor as the model B+ (your enclosures and daughter boards should still fit). - Same full size HDMI port - Same 10/100 Ethernet port - Same CSI camera port and DSI display ports - Same micro USB power supply connection What has changed: - A new turbocharged Broadcom BCM2836 900MHz quad-core system-on-chip with performance at least 6x that of the B+. - 1GB of RAM Source: http://raspberry.…

Under the "Same" column, it looks like you need to add "Same price - $35". I stocked up on B+s over Christmas - oh well... The "at least 6x" performance claim should be "at least 3x" by the way, and even that is an estimate, not a guarantee. The 3x is on a single thread comparison, the 6x is on a somewhat synthetic multicore benchmark test.

> I stocked up on B+s over Christmas - oh well...

Got one for Christmas. Bought a case and a second one since. I knew it'd get outspecc'd someday, just wasn't expecting it THIS soon...