Table 1: Technical specifications of experiment platforms.

CPUIntel Xeon E5540,
4 cores, 2.53 GHz

GPUNVIDIA Quadro FX 5800,
240 SPs, 1.30 GHz

Operating systemKylin server version 3.1

CPU compiler
GPU compiler
mpif90, Intel Fortran version 11.1
NVCC, CDUA version 3.0

CommunicationMPICH2 version 1.3rc2