We describe our work on improving the performance of collective communication operations
in MPICH for clusters connected by switched networks. For each collective operation, we …

Abstract Model parameter synchronization across GPUs introduces high overheads for data-
parallel training at scale. Existing parameter synchronization protocols cannot effectively …

The GridFTP extensions to the File Transfer Protocol define a general-purpose mechanism
for secure, reliable, high-performance data movement. We report here on the Globus striped …

We discuss the design and high‐performance implementation of collective communications
operations on distributed‐memory computer architectures. Using a combination of known …

Application development for distributed-computing “Grids” can benefit from tools that
variously hide or enable application-level management of critical aspects of the …

We report on our work on improving the performance of collective operations in MPICH on
clusters connected by switched networks. For each collective operation, we use multiple …

A 5-year-profiling in production mode at the University of Stuttgart has shown that more than
40% of the execution time of Message Passing Interface (MPI) routines is spent in the …

Security and privacy are the prime constraints to the popularity and acceptance of the IoT.
Figure 4.1 from [179] indicates the opinions of security personnel active in the IT space on …

First-principles simulations of high-Z metallic systems using the Qbox code on the
BlueGene/L supercomputer demonstrate unprecedented performance and scaling for a …

This paper examines the performance of collective communication operations in message
passing interfaces (MPI) in the cloud computing environment. The awareness of network …