MIT makes Hornet multicore simulator power aware
March 12, 2012 // Peter Clarke
Researchers at the Massachusetts Institute of Technology have developed a software simulator, called Hornet, that they claim models the cycle-accurate performance of multicore chips and scales up to 1,000 of cores.
The research group reported on the Hornet simulator at the International Symposium on Networks-on-Chip in 2011 and won a best-paper prize, MIT said. The team presents an enhanced version of the simulator in the forthcoming issue of IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems that factors in power consumption as well as patterns of communications between cores, the processing times of individual tasks, and memory-access patterns.
To maintain accuracy of simulation and achieve reasonable run times researchers typically use models of processor cores implemented on programmable chips. To finish in a reasonable time software-only simulations have to sacrifice accuracy and precision.
Hornet sits between the two approaches, according to Myong Hyon Cho, a PhD student in MIT's department of electrical engineering and computer science (EECS) and one of Hornet's developers. It is intended to complement the other two approaches.
Although Hornet is slower than some predecessors it can provide cycle-accurate simulation of chips with 1,000 cores. Cycle accuracy is important to catch race and deadlock conditions. Hornet has already proved itself in the simulation of an architecture in which tasks are handed out to cores holding relevant data – rather than moving data to cores running particular tasks. Hornet found a deadlock condition. The researchers also proposed a way to avoid it — and demonstrated that their proposal worked with another Hornet simulation.
Hardware-based simulators cannot be reprogrammed so easily. Hornet could have advantages in situations where "you want to test out several ideas quickly, with good accuracy," according to Edward Suh, an assistant professor of electrical and computer engineering at Cornell University, whose group used an early version of Hornet.
However, because Hornet is slower than either hardware-accelerated simulation or less-accurate software simulation it does tend to be used to simulate small parts of an application.
Oscilloscope engine plugs into portable Apple products
September 30, 2014
This month, Oscium is giving away three of its iMSO-204L dual analogue iOS oscilloscopes, worth USD400 each. Designed with ...
BMW joins forces with Baidu for automated driving
Self-tuning acoustic-ready chip increases audio focus
16nm FinFETs boost ARM's 64-bit big.LITTLE
X-ray imaging reveals path to extending battery lifetimes
Electron innovation prolongs power in mobile devices
September 30, 2014
Researchers from The University of Texas at Dallas have created technology that could be the first step toward wearable computers ...
What Is Digital Power System Management?
Qualcomm increases share of smartphone processor market
Aggregating disparate data protocols from IoT
- Solutions for Millimeter Wave Wireless Backhaul
- Enter Linduino
- A Novel Approach to Industrial Rectifier Systems
- Putting FPGAs to Work in Software Radio Systems Handbook
InterviewCEO interview: AMS' Laney on driving a sensor-driven business
Kirk Laney, CEO of Austrian mixed-signal chip and sensor company AMS, wants to leverage the opportunity that technology affords to create new markets for sensors and sensor interfaces.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Oscium is giving away three of its iMSO-204L dual analogue iOS oscilloscopes, worth USD400 each. Designed with native Lightning compatibility, the iMSO-204L transforms the iPad, iPhone, and iPod touch into an ultra-portable, two-channel oscilloscope.
Since Apple changed its connector, Oscium has been working to bring native compatibility to its customers. The third generation...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.