We briefly describe the Poor Man’s Supercomputer (PMS) project that is carried out at Eötvös University, Budapest. The goal is to develop a cost effective, scalable, fast parallel computer to perform numerical calculations of physical problems that can be implemented on a lattice with nearest neighbour interactions. To reach this goal we developed the PMS architecture using PC components and de...

The QCDSP machines were designed for lattice gauge calculations. For planning it is crucial to explore this architecture for other computationally intensive tasks. Here I describe an implementation of a simple message passing scheme. With the objective being simplicity, I introduce a small number of generic functions for manipulating a large data set spread over the machine. I test the scheme o...

Abstract Quantum Fourier Transform (QFT) is a key part of quantum algorithms such as Shor algorithm, Grover and phase estimation algorithm. The “Songshan” supercomputer system adopts the heterogeneous architecture domestic CPU+DCU. simulation implementation transform on can promote research optimization related algorithms. Based HIP programming model, this paper first maps shift transformation ...

Multicomputers built around a general network are an attractive architecture for a wide class of applications. The architecture provides many benefits compared with special-purpose approaches, including heterogeneity, reuse of application and system code, and sharing of resources. The architecture also poses new challenges to both computer system implementors and users. First, traditional local...

This paper presents a comprehensive characterization of the DAS-21 workloads using twelve-month scientific traces. Metrics that we characterize include system utilization, job arrival rate and interarrival time, job size (degree of parallelism), job run time, memory usage, and job queue wait time. Differences with previous reported workloads are recognized and statistical distributions are fitt...

Evaluation methods for parallel computers often require the availability of relevant workload information. To this end, workload traces recorded on real installations are frequently used. Alternatively, workload models are applied. However, often not all necessary information are available for a specific workload. In this paper, a model is presented to recover an estimated job execution time wh...

Computer experiments are often performed to allow modeling of a response surface of a physical experiment that can be too costly or difficult to run except using a simulator. Running the experiment over a dense grid can be prohibitively expensive, yet running over a sparse design chosen in advance can result in insufficient information in parts of the space, particularly when the surface calls ...