Akihiro Tabuchi

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The present paper introduces the XcalableACC (XACC) programming model, which is a hybrid model of the XcalableMP (XMP) Partitioned Global Address Space (PGAS) language and OpenACC. XACC defines directives that enable programmers to mix XMP and OpenACC directives in order to develop applications that can use accelerator clusters with ease. Moreover, in order(More)
For the execution of parallel HPC applications on GPU-ready clusters, high communication latency between GPUs over nodes will be a serious problem on strong scalability. To reduce the communication latency between GPUs, we proposed the Tightly Coupled Accelerator (TCA) architecture and developed the PEACH2 board as a proof-of-concept interconnection system(More)
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