Wenwei Weng's Blog

Machine Learning has been a very hot field. Big players like Amazon, Google, they host machine learning infrastructure in the cloud, which is very nice thing, except it can be very expensive to use it. I’m always curious if I can build one by myself: a relative powerful machine learning...

Parallel computing using general purpose GPU is really taking off with advancement of technology from Nvidia, AMD, Intel. Especially Nvidia is dominating the field with variety of GPU offering and also software infrastructure CUDA (initially called as Compute Unified Device Architecture), which is a parallel computing platform and application programming...

Serial Peripheral Interface (SPI) flash memory is often used in an embedded Linux box to hold bootloader. During very initial board bringup, SPI flash memory needs to be programmed properly using device like Dediprog, otherwise the box won’t boot. After the box is up running linux, often there is need...

Real Time Clock (RTC) is a small but important piece of hardware in an embedded Linux box. It saves time and keep time valid while box is in shutdown state. When the box boots again next time, it will provide a valid time to Linux system. Real Time Clock in...

For the last few days, I have been working on switching u-boot based bootloader to UEFI based boot loader for a new platform at work. I found out it is useful to able to boot manually with kernel, dtb, initramfs. By doing this, if the thing doesn’t work, we can...