This is the second blog entry about an ST Ericsson white-paper on multiprocessors in mobile. The first part was here.
The first part of the white-paper basically shows that for mobile the optimal number of cores is two. It is much better to use process technology (and good EDA) to run the processor at higher frequency rather than add… Read More
We know by now that clock speeds aren’t everything when it comes to measuring the goodness of a processor. Performance has direct ties to pipeline and interconnect details, power factors into considerations of usability, and the unspoken terms of yield drive cost.
My curiosity kicked in when I looked at the recent press release… Read More
This is the second part of my discussion with Paul Traynar, Apache’s PowerArtist guru. The first part discussed sequential reduction capabilities. Part I was here.
There are two big challenges with doing power analysis at the RTL level. Firstly, how do you get an accurate enough model of what the design will dissipate given… Read More
Calypto has an interesting webinar coming up about Minimizing RTL Power Through Sequential Analysis. It is next Tuesday December 4th at 11am.
Insert standard paragraph about how power is the new timing, everyone worries about power, battery life in smartphones, half-empty datacenters.
You probably already know about clock… Read More
Last week I attended the Ansys/Apache seminars on “Dimensions of Electronic Design.” The two big challenges as we go down to 28nm and 20nm and below are keeping power manageable and keeping reliability up.
The big challenge with power is that we can put so much stuff on a die and clock it so fast that the power is exceeding… Read More
Increasingly the challenge with SoCs, especially for mobile, is not getting the performance high enough but doing so in a power-efficient manner. Handheld devices running multiple apps need high-speed processors that consume extremely low levels of power both in operating and standby modes. In the server farm, the limit is … Read More
At the TSMC Theater Apache (don’t forget, now a subsidary of Ansys) talked about Emerging Challenges for Power, Signal and Reliability Verification on 3D-IC and Silicon Interposer Designs. The more I see about the costs and challenges of 20/22nm and below, the more I think that these 3D and 2.5D approaches are going to be … Read More
At DAC in San Francisco this year, Apache once again have a mixture of presentations by customers on their use of Apache tools and presentations by Apache themselves on their products. Most of the customer presentations are given just once, but the product presentations are given multiple times over the three days.
I think one of… Read More
For many, maybe most, big designs, Apache’s RedHawk is the signoff tool for analyzing issues around power: electromigration, power supply droop, noise, transients and so on. But the latest designs have some issues: they are enormous (so you can’t just analyze them naively any more than you can run a Spice simulation… Read More
Analyzing the operation of a modern SoC, especially analyzing its power distribution network (PDN) is getting more and more complex. Today’s SoCs no longer operate on a continuous basis, instead functional blocks on the IC are only powered up to execute the operation that is required and then they go into a standby mode, … Read More
