When you design your first homebrew CPU, you probably are happy if it works and you don’t worry as much about performance. But, eventually, you’ll start trying to think about how to make things run ...

Single-instruction, multiple-data (SIMD) instructions that can process multiple data with one instruction greatly contribute to the speedup of CPU operation. However, since SIMD instructions require a ...

With a new Apple security flaw in the news, it's a good time to revisit the question of what speculative execution is and how it works. This topic received a great deal of discussion a few years ago ...

CPUs can only carry out one instruction at a time. It might seem like CPUs can perform many instructions simultaneously, since it is possible for you to do homework, read instant messages and listen ...

Embedded Java implementations run up against performance problems because of the stack structures the language requires. Java implements a stack-based programming model, in which two stacks are ...

Researchers at IBM and VU Amsterdam have developed a new attack that exploits speculative execution mechanisms in modern computer processors to bypass checks in operating systems against what are ...

The LDRA tool suite automatically analyzes shared memory, cache resource access, coherency issues, and measures worst case execution time to guarantee deterministic execution time for RISC-V ...

The latest generations of Intel processors, including Xeon chips, and AMD's older microarchitectures on Linux are vulnerable to new speculative execution attacks that bypass existing ‘Spectre’ ...