Items tagged with: CPU
HN Discussion: https://news.ycombinator.com/item?id=19663009
Posted by pplonski86 (karma: 4814)
Post stats: Points: 150 - Comments: 26 - 2019-04-15T03:45:22Z
#HackerNews #cpu #gameboy #manual #pdf
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Content warning: hardware & compilers
Yet, AFAICT, in order to do that, one has to write all the elementary functions in assembler, for each CPU/GPU/APU separately. So it's basically never done, and the GPR are used for everything.
Isn't that very wrong?
The Opportunity Rover , also known as the Mars Exploration Rover B (or MER-1), has finally been declared at end of mission today after 5,3...
Article word count: 279
HN Discussion: https://news.ycombinator.com/item?id=19248790
Posted by bellinom (karma: 909)
Post stats: Points: 133 - Comments: 76 - 2019-02-25T19:53:10Z
#HackerNews #cpu #dead #last #mars #power1 #the
The Opportunity Rover, also known as the Mars Exploration Rover B (or MER-1), has finally been declared at end of mission today after 5,352 Mars solar days when NASA was not successfully able to re-establish contact. It had been apparently knocked off-line by a dust storm and was unable to restart either due to power loss or some other catastrophic failure. Originally intended for a 90 Mars solar day mission, its mission became almost 60 times longer than anticipated and it traveled nearly 30 miles on the surface in total. Spirit, or MER-2, its sister unit, had previously reached end of mission in 2010.
And why would we report that here? Because Opportunity and Spirit were both in fact powered by the POWER1, or more accurately a 20MHz BAE RAD6000, a radiation-hardened version of the original IBM RISC Single Chip CPU and the indirect ancestor of the PowerPC 601. There are a lot of POWER chips in space, both with the original RAD6000 and its successor the RAD750, a radiation-hardened version of the PowerPC G3.
Thatʼs not the end of Power ISA chips on Mars, though: Curiosity, which is running a pair of RAD750s (one main and one backup, plus two SPARC accessory CPUs), is still in operation at 2,319 Mars solar days and ticking. There is also the 2001 Mars Odyssey orbiter, which is still circling the planet with its own RAD6000 and is expected to have enough propellant to continue survey operations until 2025. Curiosityʼs design is likely to be reused for the Mars 2020 rover, meaning possibly even more Power chips will be exploring space and doing science where it counts millions of miles from home.
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PolarFire SoC....Industry's First RISC-V SoC FPGA Architecture...Lowest Power,Cost-Optimized,Bringing Real-Time to Linux.
Innovative Real-Time + Linux Architecture
Deterministic Coherent Multi-core CPU Cluster
Deterministic L2 Memory Subsystem
128K Boot Flash
Extensive Debug capability
Integrated DDR4/LPDDR4 Controller and Phy
Low static power
Power optimized transceivers
Up to 50% lower power.
#PolarFire #SoC #RISC-V #FPGA #Linux #CPU #hardware #software #technology #science #computer #FOSS
We are so close to being finished, and we are so excited about it. Things are progressing so rapidly at Purism, in and around the Librem 5 smartphone, that we want to share the latest updates with…
Article word count: 1005
HN Discussion: https://news.ycombinator.com/item?id=19218178
Posted by fghtr (karma: 568)
Post stats: Points: 153 - Comments: 85 - 2019-02-21T16:51:09Z
#HackerNews #adjustment #cpu #exact #librem #massive #progress #selected #shipping #smartphone
We are so close to being finished, and we are so excited about it.
Things are progressing so rapidly at Purism, in and around the Librem 5 smartphone, that we want to share the latest updates with you. As we’ve said before, we want to make a secure mobile communication device; one which offers on-par experience to today’s smartphones, but one that is also ethical. We are around the bend from reaching that goal.
Progress has been quick and steady, and because we only use components that respect both our ethical values and your personal privacy and freedoms, you can imagine the layers of complexity that go into delivering such a revolutionary mobile phone – from new hardware to a new kernel, from a new operating system to new applications, all of it culminating into the Librem 5 phone.
We want you to have the best possible solutions when it comes both to hardware, and to user experience.
Being able to show that what we’re doing corresponds to our exact intentions is very important, for it will allow you to see this progress for yourself – and we do think the video below, running on the Librem 5 dev kit hardware we shipped in December, speaks volumes.
The Librem 5 devkit running PureOS
What you just saw in the video is the prototype of the Librem 5 hardware, and it has nearly identical specs to the ones we are putting into production later this year. And, as you can see, it is running our own PureOS mobile operating system – we’re proud to show off the fact that the Librem 5 is not built on Android, nor iOS.All the basic functionality is still in pre-release state, and more progress is constantly happening around-the-clock, which means even more apps are making it into the PureOS Store regularly.
Q3 2019 – shipping the Librem 5
But all this leads us to the aforementioned (one quarter) shipping adjustment: the previous Q2 estimate is now confirmed for Q3 product shipping: This accounts for the time it took us to properly benchmark test the newest CPU choices from NXP for the Librem 5, and the question of whether or not to choose the i.MX8M Quad or the i.MX8M Mini, mean we have adjusted our delivery plans slightly. As we previously announced, the i.MX8M Quad CPU had known errata issues in the silicon itself, and this was the root cause for the delay, detour and need for research about potential alternatives.
On one hand, the i.MX8M Quad silicon issues meant not only that the temperature of the battery was way too high, but also that it could discharge too quickly. On the other hand, the i.MXM8 Mini is made in an updated silicon process (14nm instead of 28nm) and has reduced features, resulting in a lower power consumption – but it’s new, and there could be unknown issues and risks. So a lot of research was made, and our development team started evaluating the i.MXM8 Mini to see if it could be used within our requirements – free software only, no binary blobs, mainline based software stacks.
And then the month of February began, and something else unexpectedly happened: NXP released a new software stack for our first CPU choice, the i.MX8MQ – and all of the power consumption and heating issues suddenly disappeared!
CPU and Specs
So here we are, on track again after a little delay – quite a useful delay, because now we know. We know a lot more about the i.MX8M Quad CPU we chose, and a little bit more about a possible alternative. We have chosen the i.MX8M Quad CPU because the power consumption issues can be dealt with in software… and ultimately that means we don’t have to change the hardware to solve this issue. Full fabrication will begin for the Librem 5 with the specifications we described before:
Display 5.5" - 5.7" HD display
Processor iMX8M Quad CPU
Storage 32 GB eMMC internal storage
Wireless 802.11abgn 2.4 Ghz / 5Ghz + Bluetooth 4
Baseband Gemalto PLS8 3G/4G modem w/ single sim on replaceable M.2 card
GPS TESEO LIF3 multiconstellation GNSS receiver
Smartcard 2FF format smart cards
Kill Switches 3 - WiFi, Cellular, Microphone/Cameras (all 3 will turn off GPS)
External Storage microSD storage expansion
Accelerometer 9-axis IMU (gyro, accel, magnetometer)
Front Camera TBD
Back Camera TBD
Vibration Motor Yes
Charging USB C connector for charging, USB client function, USB host function, power delivery
Battery User replaceable
Speakers at least one
Delivering on our Promise
As you have come to know, Purism will always keep you posted – about the impressive progress we are making, about any issues, major or minor, that come along. And ultimately, this CPU choice has many opportunities – ones that will change the future of computing for the better, for this decision does come with certain advantages in the long term. The i.MX8M Quad is the most powerful CPU that has both a good operating temperature and a good battery life. Having chosen the best possible CPU will provide us, and you, with an overall better hardware experience, with better capabilities and a shorter integration path–meaning, the integration with the software platform.
Rapid Development Continues
Software development continues to move forward quickly. Amazingly quickly. In the past few months, we’ve seen astonishing software progress, and we are now able to take advantage of it. Finally, the extra time for Librem 5 hardware fabrication will benefit software advancements that continue without slowdown, such as quality testing, providing a greater number of default apps, and community advancements made on our Librem 5 dev kit.
We recognize the importance of the Librem 5 phone and all the interest you have around it, you can rest assured. Based on our historic delivery on our promises, we feel more comfortable in advancing towards the delivery of the Librem 5 phone in the third quarter of 2019. We are also immensely grateful for all the support we’ve been receiving, both on our forums and on social media, and so proud of the progress our team is making; grateful to our community for supporting our efforts as we work diligently to get the Librem 5—and all its societal benefits—into people’s hands. We think that both our team and the community deserve the very best.
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RISC-V is the new hotness, and companies are churning out code and announcements, but little actual hardware. Eventually, we’re going to get to the point where RISC-V microcontrollers and SoC…
Article word count: 413
HN Discussion: https://news.ycombinator.com/item?id=19166326
Posted by heywire (karma: 1173)
Post stats: Points: 139 - Comments: 41 - 2019-02-14T21:42:43Z
#HackerNews #cpu #for #risc-v
RISC-V is the new hotness, and companies are churning out code and announcements, but little actual hardware. Eventually, we’re going to get to the point where RISC-V microcontrollers and SoCs cost just a few bucks. This day might be here, with Seeed’s Sipeed MAix modules. it’s a RISC-V chip you can buy right now, the bare module costs eight US dollars, there are several modules, and it has ‘AI’.
Those of you following the developments in the RISC-V world may say this chip looks familiar. You’re right; last October, a seller on Taobao opened up preorders for the Sipeed M1 K210 chip, a chip with neural networks. Cool, we can ignore some buzzwords if it means new chips. Seeed has been busy these last few months, and they’re now selling modules, dev boards, and peripherals that include a camera, mic array, and displays. It’s here now, and you can buy one. If it seems a little weird for Seeed Studios to get their hands on this, remember: the ESP8266 just showed up on their web site one day a few years ago. Look where we are with that now.
The big deal here is the Sipeed MAix-I module with WiFi, sold out because it costs nine bucks. Inside this module is a Kendryte K210 RISC-V CPU with 8MB of on-chip SRAM and a 400MHz clock. This chip is also loaded up with a Neural Network Processor, an Audio Processor with support for eight microphones, and a ‘Field Programmable IO array’, which sounds like it’s a crossbar on the 48 GPIOs on the chip. Details and documentation are obviously lacking.
In addition to a chip that’s currently out of stock, we also have the same chip as above, without WiFi, for a dollar less. It’ll probably be out of stock by the time you read this. There’s a ‘Go Suit’ that puts one of these chips in an enclosure with a camera and display, and there’s a microphone array add-on. There’s a binocular camera module if you want to play around with depth sensing.
The first time we heard of this chip, it was just a preorder on Taobao. It told us two things: RISC-V chips are coming sooner than we expected, and you can do preorders on Taobao. Seeed has a history of bringing interesting chips to the wider world, and if you want a RISC-V chip right now, here you go. Just be sure to tell us what you did with it.
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On the matter of #partitioning options:
I honestly am not sure about the best options here... considering I'd be wanting the ability to potentially install up to two additional distributions in the future. I was thinking about possibly having a shared partition mostly for media files and files I'd want access to regardless of the OS I was booting into. Honestly though I want some ideas for how to partition everything. The internal drives I will have at the time of installation are my SSD: SanDisk SSD PLUS 120GB Internal SSD - SATA III 6 Gb/s, 2.5"/7mm - SDSSDA-120G-G27 and my 1TB HDD: WD Blue 1TB SATA 6 Gb/s 7200 RPM 64MB Cache 3.5 Inch Desktop Hard Drive (WD10EZEX). No idea on how to partition using a setup like this, to be completely honest. If it helps, I tend to install a smegton of applications and games, and uninstall far less than I ought to. That tends to use up a lot of space. I also download a LOT of media like pictures, videos (especially series of anime), and music. I do have 5TB in external storage (1x4TB + 1x1TB both USB 3) which is where many of my downloads will go, so I'm not terribly worried about space. I am worried about allocating enough space where it's needed.
I think that covers all of the initial install documentation heheh. As for this insanely huge post.... 本当にごめん！
Nicht nur Diesel Besitzer werden verarscht sondern auch jeder der einen Computer hat.
Mit dem Linux Kernel 4.20 kann die Performance um bis zu 50% einbrechen.
Wenn wir nun mal schätzen, wie viele CPUs es gibt und wieviel mehr an Strom und zusätzliche Hardware benötigt wird um den Leistungsverlust zu kompensieren dann ist #Meltdown & #Spectre das größere Umweltproblem.
Man kann saubere Diesel kaufen aber keine Meltdown und Spectre freien CPUs.
Ach und kostenlosen Ersatz gibt es bei Autos und CPUs vom Hersteller auch nicht...
#cpu #pc #computer #Diesel #Umwelt #Umweltschutz #Strom