<DIV>Dear pwscf users</DIV>
<DIV> I use 16 CPUs to run a job,but the usage of CPUs is very slow ,it as like:</DIV>
<DIV> </DIV>
<DIV>Tasks: 179 total, 1 running, 178 sleeping, 0 stopped, 0 zombie<BR>Cpu0 : 0.0%us, 4.8%sy, 0.0%ni, 90.3%id, 0.3%wa, 0.0%hi, 4.5%si, 0.0%st<BR>Cpu1 : 0.0%us, 1.0%sy, 0.0%ni, 95.8%id, 3.3%wa, 0.0%hi, 0.0%si, 0.0%st<BR>Cpu2 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st<BR>Cpu3 : 0.7%us, 0.0%sy, 0.0%ni, 99.0%id, 0.3%wa, 0.0%hi, 0.0%si, 0.0%st<BR>Cpu4 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st<BR>Cpu5 : 0.0%us, 0.3%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st<BR>Cpu6 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st<BR>Cpu7 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st<BR>Mem: 8048812k total, 7995856k used, 52956k free, 283692k buffers<BR>Swap: 4192956k total, 124k used, 4192832k free, 7492420k cached</DIV>
<DIV> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND <BR> 4522 root 15 -5 0 0 0 S 5 0.0 17:59.16 nfsd <BR> 2012 root 15 -5 0 0 0 S 1 0.0 6:29.01 kjournald <BR> 4404 root 20 0 104m 17m 5044 S 0 0.2 55:07.93 X <BR> 4519 root 15 -5 0 0 0 S 0 0.0 18:05.58 nfsd <BR> 4521 root 15 -5 0 0 0 S 0 0.0 16:55.33 nfsd <BR> 5023 gdm 20 0 235m 31m 11m S 0 0.4 13:39.99 gdm-simple-gree <BR> 1 root 20 0 1064 408 348 S 0 0.0 0:02.90 init <BR> 2 root 15 -5 0 0 0 S 0 0.0 0:00.02 kthreadd <BR> 3 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/0 <BR> 4 root 15 -5 0 0 0 S 0 0.0 0:00.22 ksoftirqd/0 <BR><BR>The ifort ,MKL,and mpi I used is :</DIV>
<DIV>INTFC=/opt/intel/Compiler/11.0/081<BR>INTMKL=/opt/intel/mkl/10.1.1.019</DIV>
<DIV>/opt/mpich2/bin/mpd</DIV>
<DIV>My machine model is as following :</DIV>
<DIV>processor : 0<BR>vendor_id : GenuineIntel<BR>cpu family : 6<BR>model : 23<BR>model name : Intel(R) Xeon(R) CPU E5410 @ 2.33GHz<BR>stepping : 10<BR>cpu MHz : 2327.489<BR>cache size : 6144 KB<BR>physical id : 0<BR>siblings : 4<BR>core id : 0<BR>cpu cores : 4<BR>apicid : 0<BR>initial apicid : 0<BR>fpu : yes<BR>fpu_exception : yes<BR>cpuid level : 13<BR>wp : yes<BR>flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov <BR>pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant<BR>_tsc arch_perfmon pebs bts rep_good nopl pni monitor ds_cpl vmx est tm2 ssse3 cx<BR>16 xtpr dca sse4_1 lahf_lm<BR>bogomips : 4654.97<BR>...............</DIV>
<DIV>The pwscf version is espresso-4.0.3 .</DIV>
<DIV> </DIV>
<DIV>So , I want to know why the usage is so slow ?</DIV>
<DIV> How can I solve this problem ? Anybody who meet the same problem ?</DIV>
<DIV>Your kind help will be appreciated !</DIV>
<DIV>Best regards</DIV>
<DIV>Q.J.Wang</DIV>
<DIV>XiangTan University <BR></DIV>
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