What is AceCAST?
TempoQuest’s (TQI’s) software product, AceCAST, accelerates the world’s most widely used regional weather forecasting model,
known as the Weather Research and Forecasting (WRF) model,
which is supported by the U.S. National Center for Atmospheric Research (NCAR). WRF is widely utilized by more than 36,000
registered users located in 162 countries, and is a next-generation mesoscale Numerical Weather Prediction (NWP) system designed
to serve both operational forecasting and atmospheric research needs. WRF features multiple dynamical cores and a software
architecture allowing for computational parallelism and system extensibility. WRF is suitable for a broad spectrum of applications
across scales ranging from meters to thousands of kilometers.
AceCAST is a powerful cutting-edge software powered by Graphics Processing Units (GPUs) that enable acceleration of the WRF model.
AceCAST is the product of half-a-decade of punctilious research and development that empowers WRF users to secure striking
performance optimizations using the superior massive parallelism of GPU hardware versus traditional CPU computation. AceCAST
encompasses an ample set of refactored common WRF physics and dynamics modules, and namelist options with NVIDIA CUDA or
OpenACC GPU programming techniques, allowing a wide swath of users to adopt AceCAST painlessly as a drop-in replacement
for existing WRF configurations.
GPUs enable exceptional acceleration by using multi-threaded, many-core processors with tremendous computational speed
and very high memory bandwidth. The combined features of general-purpose supercomputing, high parallelism, high memory
bandwidth, low cost, and compact size are what make a GPU-based system an appealing alternative to a massively parallel
system made up of commodity CPU clusters. TempoQuest’s software is a result of specialized programming and optimization
techniques coupled with a deep understanding of high-performance computing, NWP, atmospheric science, WRF configurations,
GPUs, and CUDA code. The TQI developed CUDA-based GPU WRF is currently the world’s fastest and highest resolution weather