Jon Masters says Moores Law may have come to an end and that single threaded performance is not defining the industry anymore because it's not increasing at the same rate that it used to. What is defining the future of the industry is machine learning, accelerators, lots of additional workload optimization that is happening outside of the core. Thus he believes ARM has an opportunity to get into the mainstream server space in the next 12-18 months with the newest powerful ARM Server solutions such as the Cavium ThunderX2 and the Qualcomm Centriq 2400. You can see some of my previous Jon Masters interviews over the past 5 years here.
I previously interviewed Paul McKenney at Linaro Connect 5 years ago in Hong Kong here, since then he has been working with a lot of things at IBM and this is the first time he's back at Linaro Connect since that initial interview. He says there might be 20 Billion Linux machines in the world, most of them running on ARM, all of them have Paul McKenney's Read-Copy Update (RCU) code in them.
Read-copy update (RCU) is a synchronization mechanism that was added to the Linux kernel in October of 2002. RCU achieves scalability improvements by allowing reads to occur concurrently with updates. In contrast with conventional locking primitives that ensure mutual exclusion among concurrent threads regardless of whether they be readers or updaters, or with reader-writer locks that allow concurrent reads but not in the presence of updates, RCU supports concurrency between a single updater and multiple readers. RCU ensures that reads are coherent by maintaining multiple versions of objects and ensuring that they are not freed up until all pre-existing read-side critical sections complete. RCU defines and uses efficient and scalable mechanisms for publishing and reading new versions of an object, and also for deferring the collection of old versions. These mechanisms distribute the work among read and update paths in such a way as to make read paths extremely fast. In some cases (non-preemptable kernels), RCU's read-side primitives have zero overhead.
Open Source Foundries is a spin off company off of Linaro, composed of a talented group of engineers to work more directly with companies, OEMs, ODMs, small, medium to large companies to bring new open source products and solutions more rapidly to the market. Leveraging all the work done by Linaro and speeding up the time to market, enable rapid product development, here demonstrating some of the open source IoT solutions provided based on Zephyr on ARM Cortex-M and Linux on ARM Cortex-A using the Linaro Technologies Division (LTD) microPlatforms system.
The lack of a secure IoT solution has the industry scrambling. The Open Source Foundries team believes that a world can exist in which all connected devices can be secured and updated in a timely fashion. In this demonstration shown at the Linaro Connect San Francisco 2017, the team showcases its secure end to end FOTA (firmware over the air) solution implementing the latest in connected technologies.
At Open Source Foundries, software is their passion, hacking hardware is their favorite past time, so they have created the OSLight project to convert off the shelf hardware into secure connected devices. They have inserted a Red Bear NRF52 BLE Nano 2 into these lamps, to allow them to communicate over BLE with various cloud services. In the first demo, they demonstrate creating a secure BLE mesh network with these lamps. They show the ability to securely pass messages through the mesh network to control the state of the LED lamp. The next demo shows a set of 96Boards Nitrogens sending temperature data to the SoftBank IoT Cloud with the ONEM2M protocol using 6lowpan over BLE. The third and final demo introduces a variant of the OSLight project, a fully 3D printed light bulb. Instead of a simple LED array it has a 12 LED WRGB NeoPixel which is powered by line voltage, stepped down to 5VDC.
For microcontrollers, they offer their Zephyr microplatform, an open source software reference based on Zephyr RTOS and MCUboot. This software stack implements secure boot, unified microkernel, and IP (TCP or UDP) using 6lowpan over BLE. At the protocol level they've embraced industry standards such as LWM2M/ONEM2M/HTTPS/MQTT to provide an array of options for their customers, whilst ensuring no vendor lock in. Open Source Foundries subscribers are offered continuous validated software updates throughout the life of their product for a fixed monthly subscription fee.
On the gateway, they offer their Linux microplatform, which is again, an open source reference based on the latest Linux kernel version, and a minimal Yocto based userspace with a container runtime (Docker). By isolated the OS from the containers, each can be updated independently while providing limitless potential for the applications it can run. For updates they again implement standards, and stay vendor neutral to allow their customers to choose the solution that is right for them. Continuous validated updates for the OS and containers are also offered for this platform for a reasonable fixed monthly fee.
Bero (Bernhard Rosenkränzer) from the Linaro Mobile Group set out this week as you can see in my previous video to build and bring up his ARM Desktop based on the Quad-core ARM Cortex-A72 Marvell MACCHIATObin development board with a Radeon or Nvidia GPU. Bero also built his own ARM Laptop based on the Dragonboard 820 running Open Mandriva Linux.
Mark Gregotski, DIrector of the Linaro Digital Home Group, provides an update on the latest work in open source for the Digital Home Group that LHG is working on including the adoption of OP-TEE (Open Portable Trusted Execution Environment) with DRM integrations including PlayReady DRM PK v3.3 on AOSP 8.0 on the HiKey960 development board and Widevine for Linux and for Android AOSP. NXP demonstrates some of their work, NXP has recently joined the Linaro Digital Home Group. The LHG group has worked to integrate V4L2 with gstreamer and ffmpeg to improve media playback on ARM offloading all the computation onto the video codec hardware of the SoC.
Self Balancing Bot and Home Surveillance Kit by Manivannan Sadhasivam, Applications Engineer, Linaro
Manivannan Sadhasivam is an Applications Engineer at Linaro on the 96Boards team here Demonstrating some of his latest projects created out of 96Boards Consumer Edition such as the Self Balancing Bot capable of balancing itself using the MPU6050 IMU controlled by Dragonboard 410c. You can find that project at github and a Home Surveillance Kit powered by Dragonboard 410c. OpenCV is used to identify the faces, combined with AWS and servo control to create a home surveillance solution. You can find that project at github
This development board runs the TI CC3220 is for IoT applications featuring an ARM Cortex-M4 with an associated network processor that runs the whole Wi-Fi, TCP/IP and TLS stack so the main chipset doesn't have to do any of the networking or security freeing up the whole ARM Cortex-M4 for the IoT application use. At Linaro Connect San Francisco 2017 they are showing it running TI RTOS and Zephyr. This board also features the LiPo battery connector. Adding also IPv6 support and TLS suite, an ARM Cortex-M4 with 1MB Flash, 256KB RAM running at 80Mhz. It's very low power it can run for years off 2 AAA battery cells with the right duty cycle.
Open Source video decoding with V4L2 (Video4Linux2) hardware accelerated video playback in ffmpeg with latest Kodi 18 from master branch. Video4Linux2 support for FFMPEG means fully open source video acceleration can be available for open source distributions on ARM, here shown off decoding video with v4l2m2m (Video4Linux 2 with Memory to Memory) on the Qualcomm DragonBoard 410c, for H264 decode. Other boards with other chipsets that have video decode engines that can support other codecs such as H265, VP9 etc at 4K and etc will then also be able to support that. It means you can upgrade the kernel when you want to what you want, giving you more freedom being less locked to vendor support and if you find a bug you can actually fix it. Filmed at Linaro Connect San Francisco 2017.
This is the Qualcomm Dragonboard 820c running at 4K the Debian user interface, configured in the 96Boards Extended edition with full sized Ethernet port and more.
The Qualcomm DragonBoard 600c features the APQ8064 quad-core Qualcomm Krait chipset, with Adreno A320 GPU, it's in the 96Boards Extended edition form factor with space for Gigabit Ethernet.