New Intel CPU Flaw Bypasses Spectre v2 Defenses to Leak Kernel Memory
(cyberinsider.com)
Researchers from ETH Zurich have uncovered a new class of vulnerabilities affecting all modern Intel CPUs, undermining key hardware defenses against Spectre v2 attacks.
Researchers from ETH Zurich have uncovered a new class of vulnerabilities affecting all modern Intel CPUs, undermining key hardware defenses against Spectre v2 attacks.
TeapotLLM- an open-source <1B model for hallucination-resistant Q&A on a CPU
(huggingface.co)
Teapot is an open-source small language model (~800 million parameters) fine-tuned on synthetic data and optimized to run locally on resource-constrained devices such as smartphones and CPUs. Teapot is trained to only answer using context from documents, reducing hallucinations. Teapot can perform a variety of tasks, including hallucination-resistant Question Answering (QnA), Retrieval-Augmented Generation (RAG), and JSON extraction. Teapot is a model built by and for the community.
Teapot is an open-source small language model (~800 million parameters) fine-tuned on synthetic data and optimized to run locally on resource-constrained devices such as smartphones and CPUs. Teapot is trained to only answer using context from documents, reducing hallucinations. Teapot can perform a variety of tasks, including hallucination-resistant Question Answering (QnA), Retrieval-Augmented Generation (RAG), and JSON extraction. Teapot is a model built by and for the community.
Comparing Two Verilog CPU Implementations Using EBMC
(philipzucker.com)
About a year ago my friends and I built a 4bit cpu out of a kit from aliexpress. https://www.philipzucker.com/td4-4bit-cpu/ It’s a lot of fun. I also think the system is so simple that is is kind of a nice target for tinkering around with formal methods.
About a year ago my friends and I built a 4bit cpu out of a kit from aliexpress. https://www.philipzucker.com/td4-4bit-cpu/ It’s a lot of fun. I also think the system is so simple that is is kind of a nice target for tinkering around with formal methods.
AMD: Microcode Signature Verification Vulnerability
(github.com/google)
Google Security Team has identified a security vulnerability in some AMD Zen-based CPUs. This vulnerability allows an adversary with local administrator privileges (ring 0 from outside a VM) to load malicious microcode patches. We have demonstrated the ability to craft arbitrary malicious microcode patches on Zen 1 through Zen 4 CPUs. The vulnerability is that the CPU uses an insecure hash function in the signature validation for microcode updates.
Google Security Team has identified a security vulnerability in some AMD Zen-based CPUs. This vulnerability allows an adversary with local administrator privileges (ring 0 from outside a VM) to load malicious microcode patches. We have demonstrated the ability to craft arbitrary malicious microcode patches on Zen 1 through Zen 4 CPUs. The vulnerability is that the CPU uses an insecure hash function in the signature validation for microcode updates.
Parallel Vector Graphics Rasterization on the CPU
(gasiulis.name)
During the last couple of weeks I got some free time and as a fun programming exercise I decided to write a CPU-based, multithreaded vector graphics rasterizer. The goal was to outperform rasterizers of all publicly available vector graphics libraries. And today I’m sharing what I came up with.
During the last couple of weeks I got some free time and as a fun programming exercise I decided to write a CPU-based, multithreaded vector graphics rasterizer. The goal was to outperform rasterizers of all publicly available vector graphics libraries. And today I’m sharing what I came up with.
Benchmarks of Google's Axion Arm-Based CPU
(phoronix.com)
Earlier this year Google announced Axion as their first Arm-based CPU for the Google Cloud. Today already they are taking Axion to general availability with the new C4A instances. These new C4A instances are advertised as offering up to 50% better performance and up to 60% better energy efficiency than their current generation x86 instance types.
Earlier this year Google announced Axion as their first Arm-based CPU for the Google Cloud. Today already they are taking Axion to general availability with the new C4A instances. These new C4A instances are advertised as offering up to 50% better performance and up to 60% better energy efficiency than their current generation x86 instance types.