Timing closure for a chip is like setting the timing chain (or belt) in a vehicle with an internal combustion engine. If the timing chain is not synchronized correctly, the vehicle will perform poorly, and the engine could fail. Similarly, if timing for a chip is not closed properly, the chip will not meet specifications and may not be functional.
As semiconductor chips become increasingly complex, timing closure is even more critical to first-pass silicon success. At a high level, timing closure needs to be done at the block, sub-system and full-chip levels, and now across dies in multi-die designs.
A challenge as we go lower in technology nodes is the huge explosion in the number of Process, Voltage and Temperature (PVT) and RC conditions. Making sure chips are functional across the entire spectrum of PVT conditions is a daunting and time-consuming task. Another hurdle is increasing design size with billions of instances and hundreds of timing scenarios to cover. To overcome these challenges there is a need to run exhaustive analysis and perform fixes faster to achieve final signoff. Getting results faster is critical for timing engineers to accelerate design closure and meet tapeout schedules.
In this blog we will learn about the latest innovative cloud compute and Synopsys Cloud FlexEDA Pay-Per-Use licensing that together can help achieve results faster using PrimeTime® to accelerate timing signoff.
Semiconductor design companies, small or big, have a few challenges in common and everyone has their own way of overcoming them.
Synopsys brings a unique value proposition to address each of these challenges.
Synopsys Cloud customers are getting up-to 40% improvement in engineering productivity and accelerated time to results ranging from 2x-52x with patented FlexEDA pay-per-use by the minute access to highly scalable tools used at various stages of chip development.
The underlying hardware on which software runs impacts time to results. This is why Synopsys Cloud SaaS offers the latest and greatest compute to designers. Utilizing advanced compute resources in the cloud along with on-demand, unlimited pay-per-use FlexEDA licensing, chip design workloads can run up to 52x faster. The result is accelerated tapeout of a quality design that meets or exceeds product specifications.
With its 8.1 release, Synopsys Cloud SaaS now offers compute virtual machines (VM) powered with 5th Gen Intel® Xeon® Platinum 8573C (Emerald Rapids) and 4th Generation AMD EPYC™ Genoa based on x86 architecture. These machines offer faster performance for EDA workloads. We see 2.6x faster time to results for timing signoff with PrimeTime on these new VMs.
| Design Size - 40M Instances | ||
| Number of Cores | Runtime (Minutes) | Processor |
| 16 | 76 | Intel® Xeon® Gold Skylake |
| 16 | 29 | Intel® Xeon® Platinum Emerald Rapids |
Faster performance by virtue of using faster compute
Unlimited, on-demand by the minute licensing coupled with the latest cloud computing resources provide accelerated time to results. As seen below, timing signoff is completed 4x faster at 2x lower cost. This advantage is due to the Synopsys Cloud FlexEDA PPU ability to provide additional on-demand PrimeTime licenses for a short duration. Thereby enabling faster runs that allow designers time for fine tuning their design to deliver a quality product in a shorter schedule.
| Deployment | Cores | Time to results (In Minutes) |
Processor |
| Cloud | 1600 | 58 | 5th Gen Intel® Xeon® Platinum 8573C (Emerald Rapids) Azure Instance: D16ds v6, Qty:100, Multithreading off, 16 cores per PrimeTime® run |
| Cloud | 6400 | 14 | 5th Gen Intel® Xeon® Platinum 8573C (Emerald Rapids) Azure Instance: D64ds v6, Qty:200, Multithreading off, 64 cores per PrimeTime® run |
Synopsys PrimeTime: Design size 40M Instances, 200 timing scenarios, all running in parallel
Synopsys Cloud SaaS is disrupting traditional chip design environments with its patented FlexEDA Pay-Per-Use licensing model. Unlimited, instant access to highly scalable EDA tools at a by-the-minute rate, complemented by the latest cloud compute, helps accelerate design flows while keeping costs effective. Synopsys Cloud SaaS powered with FlexEDA model is a game-changer especially for startups as they launch their products from concept to prototype and realize prototype to production