张国熙 <[email protected]> writes: > Hi,all > > Recently I am using SLEPc to solve an sparse eigenvalue problem. I use > krylov-shur and mumps as solvers. > > My codes work well my corei5 dual core laptop. Compared to my old > sequential solution ARPACK/UMFPACK, running with 2 process could give me > 1.3x speedup. However when I install my code on another station with quad > core CPU, the performance change significantly. My parallel code runs 2-3 > times slower than sequential code.
Run "make streams NPMAX=4" and send the output.
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