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Execution Dependence Extension (EDE): ISA Support For Eliminating Fences


Fence instructions are a coarse-grained mechanism to enforce the order of instruction execution in an out-of-order pipeline. They are an overkill for cases when only one instruction must wait for the completion of one other instruction. For example, this is the case when performing undo logging in Non-Volatile Memory (NVM) systems: while the update of a variable needs to wait until the correspo... » read more

Manufacturing Bits: Sept. 28


Self-healing ceramics Texas A&M University has discovered a new self-healing mechanism for ceramics, a technology that could one day be used for jet engines, hypersonic aircraft and nuclear reactors. Ceramics involve various materials that are neither metallic nor organic, but rather they are crystalline and/or glassy, according to the University of Maryland. One common example is clay,... » read more

Week In Review: Manufacturing, Test


Government policy The U.S. government hopes to build more fabs and expand its R&D efforts in the United States. To help enable those efforts, U.S. Senate Majority Leader Charles Schumer has introduced the new bipartisan U.S. Innovation and Competition Act. This combines Schumer’s Endless Frontier Act and other bipartisan competitiveness bills. It includes $52 billion in emergency supplem... » read more

Week In Review: Design, Low Power


Valens Semiconductor will become a publicly traded company on NYSE as VLN after a merger with PTK Acquisition Corp. Valens provides long-reach, high-speed video and data transmission for the audio-video and automotive industries. The transaction is expected to provide proceeds of approximately $240 million, including up to $115 million in trust from PTK Acquisition Corp. (assuming no redemption... » read more

Power/Performance Bits: April 20


Multiplexing twisted light Researchers from University of California San Diego and University of California Berkeley found a way to multiplex light by using discrete twisting laser beams from antennas made up of concentric rings. "It's the first time that lasers producing twisted light have been directly multiplexed," said Boubacar Kanté, an Associate Professor at UC Berkeley's Department ... » read more

Will Open-Source EDA Work?


Open-source EDA is back on the semiconductor industry's agenda, spurred by growing interest in open-source hardware. But whether the industry embraces the idea with enough enthusiasm to make it successful is not clear yet. One of the key sponsors of this effort is the U.S. Defense Advanced Research Projects Agency (DARPA), which is spearheading a number of programs to lower the cost of chip ... » read more

Power/Performance Bits: Oct. 22


Thermal emitter improves solar cell efficiency Stanford University scientists have created a heat-resistant thermal emitter -- an element used in specialized solar cells -- that could significantly improve the efficiency of the cells. The heat-resistant thermal emitter is designed to convert heat from the sun into infrared light that can be absorbed by solar cells to make electricity – a tec... » read more