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我做的体系是 DNA-protein复合体系,在用namd作常规动力学模拟时遇到下面问题,基本上是做几步就退出来了。我是第一次做带有DNA的体系,在生成DNA的psf时,所用的top文件力场参数,是用生成小配体参数的网站生成的, https://cgenff.paramchem.org/use ... hp#20161220/DT1.str。我这种方法不知是否正确,希望老师和大神们指教!
1 生成的log文件如下:TCL: Minimizing for 5000 steps
PRESSURE: 0 nan nan nan nan nan nan nan nan nan
GPRESSURE: 0 nan nan nan nan nan nan nan nan nan
ETITLE: TS BOND ANGLE DIHED IMPRP ELECT VDW BOUNDARY MISC KINETIC TOTAL TEMP POTENTIAL TOTAL3 TEMPAVG PRESSURE GPRESSURE VOLUME PRESSAVG GPRESSAVG
ENERGY: 0 38492.5804 10260.2250 6753.4884 53.7573 -303373.7267 9999999999.9999 0.0000 0.0000 0.0000 9999999999.9999 0.0000 9999999999.9999 9999999999.9999 0.0000 -9999999999.9999 -9999999999.9999 1147125.0000 -9999999999.9999 -9999999999.9999
OPENING EXTENDED SYSTEM TRAJECTORY FILE
MINIMIZER SLOWLY MOVING 84 ATOMS WITH BAD CONTACTS DOWNHILL
PRESSURE: 1 nan nan nan nan nan nan nan nan nan
GPRESSURE: 1 nan nan nan nan nan nan nan nan nan
ENERGY: 1 38035.4674 10341.2508 6755.6451 52.8761 -303511.5435 9999999999.9999 0.0000 0.0000 0.0000 9999999999.9999 0.0000 9999999999.9999 9999999999.9999 0.0000 -9999999999.9999 -9999999999.9999 1147125.0000 -9999999999.9999 -9999999999.9999
MINIMIZER SLOWLY MOVING 88 ATOMS WITH BAD CONTACTS DOWNHILL
PRESSURE: 2 nan nan nan nan nan nan nan nan nan
GPRESSURE: 2 nan nan nan nan nan nan nan nan nan
ENERGY: 2 37646.6593 10492.2029 6761.0360 51.9328 -303218.2758 9999999999.9999 0.0000 0.0000 0.0000 9999999999.9999 0.0000 9999999999.9999 9999999999.9999 0.0000 -9999999999.9999 -9999999999.9999 1147125.0000 -9999999999.9999 -9999999999.9999
文件中最小化部分有问题,压力值出现了 nan,是怎么回事,nan是非数么?
2 output文件报错如下:
Exited with exit code 137.
Resource usage summary:
CPU time : 2540.00 sec.
Max Memory : 12202 MB
Max Swap : 13322 MB
Max Processes : 19
Max Threads : 21
The output (if any) follows:
Fatal error in PMPI_Isend: Internal MPI error!, error stack:
PMPI_Isend(146): MPI_Isend(buf=0x258872068, count=168, MPI_BYTE, dest=1, tag=1375, MPI_COMM_WORLD, request=0x25887213c) failed
(unknown)(): Internal MPI error!
希望老师们指教
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