In computing, SPMD
is a technique employed to achieve parallelism, and it is the most common style of parallel programming.
The proposed parallel multicore system works in SPMD
(Single Program Multiple Data), an approach that fits well in cases where the same algorithm runs against different sets of data.
Other major components at the Lee County site include Woodward SPMD
synchronizing systems, Thompson Technology generator breakers, SEL generator protection relays, Eaton Cutler-Hammer motor control centers, Silex silencers, radiators from Sutton Stromart and vibration isolators from Getzner.
The emergence and widespread adoption of the single program, multiple data (SPMD
) programming model and the standardization of parallel communications libraries in the 1990s have increased the use of parallel computers and offered the carrot of the very highest performance for scientific computing.
Although we have designed the interface having in view an SPMD
programming model on distributed-memory machines, we do not exclude different implementations, such as those based on a shared-memory model of computations.
The execution model is single program, multiple data (SPMD
), i.e., it supports a single user thread per processor, where each processor runs the same executable.
extracts have been used for chemical analysis: to back-calculate the concentrations of compounds in water, to determine bioavailable organic chemicals, and to compare concentrations in SPMDs
to those in fish tissue, mussels, or other biota used for monitoring purposes (Huckins et al., 1990, 1996; Prest et al., 1995; Rohr et al., 1996).
This (Department of the Interior) research involves five areas: (1) continued development of the SPMD
technique for integrative sampling of hydrophobic chemicals; (2) evaluation of a deployment apparatus for use with SPMD
samplers; (3) continued development of an integrative sampling approach for toxic metals, and initiation of the development of an integrative sampler for volatile metals, specifically mercury vapor; (4) initiation of development of an integrative sampling approach for more hydrophilic chemicals; and (5) evaluation of extracts from standard SPMDs
deployed in the field, using a variety of bioassay procedures to determine the applicability of incorporating the SPMD
sampling technique into exposure assessment paradigms.