The emergence of 2.5D heterogeneous die integration using a silicon (or organic) interposer has enabled unique system architectures. The term “More than Moore” has been used to describe the circuit density and cost advantages of leveraging multiple die in the package, the die potentially in different process technologies. … Read More
Power integrity analysis in large chip designs is especially challenging thanks to the huge dynamic range the analysis must span. At one end, EM estimation and IR drop through interconnect and advanced transistor structures require circuit-level insight—very fine-grained insight but across a huge design. At the other, activity… Read More
Hierarchical PI Analysis of Large Designs with Voltus Solution
Memory requirements and runtime for full chip EMIR analysis has become a major challenge at advanced nodes as it is not uncommon to see designs with 100s of millions of cells and some even in the multi-billion range. To run a flat analysis requires multiple terabytes
Semiconductor technology advances have a way of rewriting the rule book. As process geometries shrink, subtle effects graduate to mainstream problems. Performance curves can become inverted. And no matter what else occurs, low power demands are constantly reducing voltage and design margins along with it. Sometimes these… Read More
The Tale of Three Metrics
Meeting PPA (Performance, Power and Area) target is key to a successful design tapeout. These mainstream QoR (Quality of Results) metrics are rather empirical yet inter-correlated and have been expanded to be linked with other metrics such as yield, cost and reliability. While the recent CPU performance… Read More
When situation demands, multiple solutions appear with a slight lag of time. Similar is the story with estimating and optimizing power at SoC level. In the SoC era, power has become a critical criterion long ago, and there are tools available for power analysis and optimization. However, with more mobile and IoT (Internet of Things)… Read More
Yesterday was the first day of CDNLive. There were three keynotes. The first was by Lip-Bu Tan, Cadence’s CEO (and the Chairman of Walden International that he will be the first to remind you). The most interesting tidbit was that Cadence now has over 1000 people working on IP and that it represents 11% of their revenue. Then… Read More
You probably remember Cadence introduced Voltus towards the end of last year at their signoff summit. This was aimed at digital designers. Prior to that they had announced Tempus, their static timing analysis tool. More recently they announced Quantus QRC extraction. All of these tools that end in -us have been re-architected… Read More
Last month Cadenceannounced its fastest parasitic extraction tool (minimum 5 times better performance compared to other available tools) which can handle growing design sizes with interconnect explosion, number of parasitics and complexities at advanced process nodes including FinFETs, without impacting accuracy of … Read More
Yesterday Cadence had an all-day Signoff Summit where they talked about the tools that they have for signoff in advanced nodes. Well, of course, those tools work just fine in non-advanced nodes too, but at 20nm and 16nm there are FinFETs, double patterning, timing impacts from dummy metal fill, a gazillion corners to be analyzed… Read More
