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meimeinn銀蟲 (小有名氣)
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[交流]
【求助】并行計算問題 已有5人參與
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在服務(wù)器上計算的時候,有時CPU利用率非常低,都在10%以下,輸出文件可以看到一個關(guān)于K點并行計算的警告(如下),但是去幫助里看了半天也不知道怎么改,哪位幫幫忙,謝謝了。 nkpt*nsppol is not a multiple of nproc_kpt The k-point parallelisation is not efficient. invars1: mkmem undefined in the input file. Use default mkmem = nkpt invars1: With nkpt_me= 2 and mkmem = 10, ground state wf handled in core. Resetting mkmem to nkpt_me to save memory space. |
銅蟲 (正式寫手)
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cpu用不起來,說明并行變量沒有設(shè)置好,100個cpu如果沒設(shè)置好,10個cpu都不如。 最好按照網(wǎng)上說明做http://www.abinit.org/documentat ... riables/varpar.html (具體看最后一段) 先設(shè)置paral_kgb=-n(n為可用的最大核數(shù))運行后,再根據(jù)log中的提示設(shè)置npkpt, npband, npfft, bandpp。 If paral_kgb=-n , ABINIT will test automatically if all the processor numbers between 2 and n are convenient for a parallel calculation and print the possible values in the log file. The code will then stop after the printing. This test can be done as well with a sequential as with a parallel version of the code. The user can then choose the adequate number of processor on which he can run his job. He must put again paral_kgb=1 in the input file and launch ABINIT a new time. ABINIT will then find automatically the corresponding values for npband, npfft, npband and bandpp. |
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銀蟲 (小有名氣)
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