[Pw_forum] The low usage of CUPs

[wangqj1]

Dear pwscf users
     I use 16 CPUs to run a job,but the usage of CPUs is very slow ,it as like:
 
Tasks: 179 total,   1 running, 178 sleeping,   0 stopped,   0 zombie
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
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
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
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
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
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
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
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
Mem:   8048812k total,  7995856k used,    52956k free,   283692k buffers
Swap:  4192956k total,      124k used,  4192832k free,  7492420k cached
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND            
 4522 root      15  -5     0    0    0 S    5  0.0  17:59.16 nfsd               
 2012 root      15  -5     0    0    0 S    1  0.0   6:29.01 kjournald          
 4404 root      20   0  104m  17m 5044 S    0  0.2  55:07.93 X                  
 4519 root      15  -5     0    0    0 S    0  0.0  18:05.58 nfsd               
 4521 root      15  -5     0    0    0 S    0  0.0  16:55.33 nfsd               
 5023 gdm       20   0  235m  31m  11m S    0  0.4  13:39.99 gdm-simple-gree    
    1 root      20   0  1064  408  348 S    0  0.0   0:02.90 init               
    2 root      15  -5     0    0    0 S    0  0.0   0:00.02 kthreadd           
    3 root      RT  -5     0    0    0 S    0  0.0   0:00.00 migration/0        
    4 root      15  -5     0    0    0 S    0  0.0   0:00.22 ksoftirqd/0        

The ifort ,MKL,and mpi I used is :
INTFC=/opt/intel/Compiler/11.0/081
INTMKL=/opt/intel/mkl/10.1.1.019
/opt/mpich2/bin/mpd
My machine model is as following :
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Intel(R) Xeon(R) CPU           E5410  @ 2.33GHz
stepping        : 10
cpu MHz         : 2327.489
cache size      : 6144 KB
physical id     : 0
siblings        : 4
core id         : 0
cpu cores       : 4
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov 
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant
_tsc arch_perfmon pebs bts rep_good nopl pni monitor ds_cpl vmx est tm2 ssse3 cx
16 xtpr dca sse4_1 lahf_lm
bogomips        : 4654.97
...............
The pwscf version is espresso-4.0.3 .
 
So , I want to know why the usage is so slow ?
    How can I solve this problem ? Anybody who meet the same problem ?
Your kind help will be appreciated !
Best regards
Q.J.Wang
XiangTan University 


 
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