Peta-Exa-Zetta: Robert Wisniewski and the Growth of Compute Power

While much noise is being made about the race to exascale, building productive supercomputers really comes down to people and ingenuity. In this special guest feature, Donna Loveland profiles supercomputer architect Robert Wisniewski from Intel. "In combining the threading and memory challenges, there's an increased need for the hardware to perform synchronization operations, especially intranode ones, efficiently. With more threads utilizing less memory with wider parallelism, it becomes important that they synchronize among themselves efficiently and have access to efficient atomic memory operations. Applications also need to be vectorized to take advantage of the wider FPUs on the chip. While much of the vectorization can be done by compilers, application developers can follow design patterns that aid the compiler's task."

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