HISQ inverter on Intel Xeon Phi and NVIDIA GPUs

Mukherjee S, Kaczmarek O, Schmidt C, Steinbrecher P, Wagner M (2015)
In: PoS LATTICE2014. 044.

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Abstract
The runtime of a Lattice QCD simulation is dominated by a small kernel, whichcalculates the product of a vector by a sparse matrix known as the "Dslash"operator. Therefore, this kernel is frequently optimized for various HPCarchitectures. In this contribution we compare the performance of the IntelXeon Phi to current Kepler-based NVIDIA Tesla GPUs running a conjugate gradientsolver. By exposing more parallelism to the accelerator through invertingmultiple vectors at the same time we obtain a performance 250 GFlop/s on botharchitectures. This more than doubles the performance of the inversions. Wegive a short overview of both architectures, discuss some details of theimplementation and the effort required to obtain the achieved performance.
Publishing Year
Conference
32nd International Symposium on Lattice Field Theory (Lattice 2014)
Location
Brookhaven, NY, USA
Conference Date
2014-06-23 – 2014-06-28
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Mukherjee S, Kaczmarek O, Schmidt C, Steinbrecher P, Wagner M. HISQ inverter on Intel Xeon Phi and NVIDIA GPUs. In: PoS LATTICE2014. 2015: 044.
Mukherjee, S., Kaczmarek, O., Schmidt, C., Steinbrecher, P., & Wagner, M. (2015). HISQ inverter on Intel Xeon Phi and NVIDIA GPUs. PoS LATTICE2014, 044
Mukherjee, S., Kaczmarek, O., Schmidt, C., Steinbrecher, P., and Wagner, M. (2015). “HISQ inverter on Intel Xeon Phi and NVIDIA GPUs” in PoS LATTICE2014 044.
Mukherjee, S., et al., 2015. HISQ inverter on Intel Xeon Phi and NVIDIA GPUs. In PoS LATTICE2014. pp. 044.
S. Mukherjee, et al., “HISQ inverter on Intel Xeon Phi and NVIDIA GPUs”, PoS LATTICE2014, 2015, pp.044.
Mukherjee, S., Kaczmarek, O., Schmidt, C., Steinbrecher, P., Wagner, M.: HISQ inverter on Intel Xeon Phi and NVIDIA GPUs. PoS LATTICE2014. p. 044. (2015).
Mukherjee, Swagato, Kaczmarek, Olaf, Schmidt, Christian, Steinbrecher, Patrick, and Wagner, Mathias. “HISQ inverter on Intel Xeon Phi and NVIDIA GPUs”. PoS LATTICE2014. 2015. 044.
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