Benchmark-Based Design Strategies for Single Chip Heterogeneous Multiprocessors

Single chip heterogeneous multiprocessors are arising to meet the computational demands of portable and handheld devices. These computing systems are not fully custom designs traditionally targeted by the Design Automation (DA) community, general purpose designs traditionally targeted by the Computer Architecture (CA) community, nor pure embedded designs traditionally targeted by the real-time (RT) community. An entirely new design philosophy will be needed for this hybrid class of computing. The programming of the device will be drawn from a narrower set of applications with execution that persists in the system over a longer period of time than for general purpose programming. But the devices will still be programmable, not only at the level of the individual processing element, but across multiple processing elements and even the entire chip. The design of other programmable single chip computers has enjoyed an era where the design trade-offs could be captured in simulators such as SimpleScalar and performance could be evaluated to the SPEC benchmarks. Motivated by this, we describe new benchmark-based design strategies for single chip heterogeneous multiprocessors. We include an example and results

Prevalence of inclusion body hepatitis (IBH) in Poland from 2010-2014

This study investigated the prevalence of inclusion body hepatitis (IBH) infections during the past five years (2010-2014) in broiler chicken flocks in Poland. The diagnosis of IBH was based on anatomopathological investigations and histopathological analyzes. IBH was the most prevalent disease in broiler flocks in Poland (10.4%) during this time period, and occurred as a primary infection. The fewest cases of IBH occurred in the summer, suggesting that the temperature may have been a possible stressor that increased susceptibility to IBH. However, over the last 5 years the occurrence of clinical IBH cases in Poland has systematically decreased

Temperature dependent electrical and electrocaloric properties of textured 0.72PMN-0.28PT ceramics*

Lead magnesium niobate (PMN) - lead titanate (PT) solid solution ceramics in the ratio of 0.72PMN-0.28PT was produced by a combination of tape-casting in ⟨001⟩pc textured and random forms. The Lotgering factor, f, of textured ceramics was approximately calculated as 80%. Modified Curie-Weiss analysis indicated relaxor dominant behavior for both the random and textured ceramics. Development of texture led to an enhancement in the electromechanical properties with converse piezoelectric charge coefficient (d33*) under 20 kV/cm electric field reaching 545 pm/V for the textured ceramic. Electrocaloric (EC) behavior of random and textured ceramics were obtained from indirect measurements using temperature dependent polarization vs. electric field hysteresis loops. An EC temperature change (ΔTEC) of ∼0.5 K was calculated from the PMN-28PT ceramics at around 80 °C under an electric field of 60 kV/cm. Development of texture was demonstrated to have led to an anisotropy in the EC response