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 ERROR (SPECTRE-7031): SST2 Error: No space left on device 

Last post Wed, Apr 10 2013 12:43 PM by Andrew Beckett. 1 replies.
Started by RFStuff 10 Apr 2013 12:29 PM. Topic has 1 replies and 956 views
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  • Wed, Apr 10 2013 12:29 PM

    • RFStuff
    • Top 25 Contributor
    • Joined on Tue, Feb 5 2013
    • Posts 227
    • Points 3,995
    ERROR (SPECTRE-7031): SST2 Error: No space left on device Reply

     Dear All,

    I was running a simulation of a PEXed circuit block.

    The size of psf folder was exceeding 297GB !!  Why So large size ?

    The PSS really took almost 2 days with APS enabled and at 39%, it gave following error:-

    Could anybody please tell what is the cause of this error and how to avoid this error and coplete the PSS of big circuits.

     

    \o     pss: time = 235.9 ns    (39.3 %), step = 1.025 ps     (171 u%)
    \o
    \o
    \o
    \o Error found by spectre at time = 235.888 ns during periodic steady state
    \o         analysis `pss'.
    \o     ERROR (SPECTRE-7031): SST2 Error: No space left on device.
    \o
    \o     ERROR (SPECTRE-7031): SST2 Error: No space left on device.
    \o
    \o
    \o
    \o Analysis `pss' was terminated prematurely due to an error.

     

    The circuit simulation info is as below:-

     Circuit inventory:
    \o               nodes 449447
    \o
    \o             bsim3v3 17914
    \o
    \o           capacitor 1397804
    \o               diode 48    
    \o
    \o            inductor 1     
    \o                port 5     
    \o              res_va 12    
    \o
    \o            resistor 528771
    \o
    \o         transformer 22    
    \o
    \o                vcvs 9     
    \o
    \o             vsource 19    
    \o
    \o
    \o
    \o Notice from spectre during initial setup.
    \o     APS Enabled.
    \o
    \o     Multithreading Enabled: 8 threads on system with 8 available processors.
    \o         
    \o
    \o     3 notices suppressed.
    \o
    \o     1993 warnings suppressed.
    \o
    \o
    \o
    \o
    \o Time for parsing: CPU = 389.862 s (6m  29.9s), elapsed = 392.837 s (6m
    \o         32.8s).
    \o
    \o Time accumulated: CPU = 453.545 s (7m  33.5s), elapsed = 456.924 s (7m
    \o         36.9s).
    \o
    \o Peak resident memory used = 3.19 Gbytes.
    \o
    \o
    \o
    \o
    \o ******************
    \o DC Analysis `dcOp'
    \o ******************
    \o
    \o Finding DC approximate solution failed. Try again with try_fast_op set to no.
    \o
    \o Important parameter values:
    \o     reltol = 1e-03
    \o
    \o     abstol(V) = 100 uV
    \o     abstol(I) = 100 pA
    \o
    \o     temp = 27 C
    \o
    \o     tnom = 27 C
    \o
    \o     tempeffects = all
    \o
    \o     gmindc = 1 pS
    \o     rabsshort = 1 mOhm
    \o
    \o Trying `homotopy = gmin'.
    \o
    \o
    \o Notice from spectre during DC analysis `dcOp'.
    \o     Bad pivoting is found during DC analysis. Option dc_pivot_check=yes is
    \o
    \o         recommended for possible improvement of convergence.
    \o
    \o
    \o Convergence achieved in 80 iterations.
    \o
    \o Total time required for dc analysis `dcOp': CPU = 1.08634 ks (18m  6.3s),
    \o         elapsed = 687.388 s (11m  27.4s).
    \o
    \o Time accumulated: CPU = 1.54125 ks (25m  41.2s), elapsed = 1.14572 ks (19m
    \o         5.7s).
    \o
    \o Peak resident memory used = 4.49 Gbytes.
    \o
    \o
    \o
    \o dcOpInfo: writing operating point information to rawfile.
    \o
    \o
    \o ***************************************************
    \o Periodic Steady-State Analysis `pss': fund = 20 MHz
    \o ***************************************************
    \o
    \o
    \o
    \o Notice from spectre during IC analysis, during periodic steady state analysis
    \o         `pss'.
    \o     Bad pivoting is found during DC analysis. Option dc_pivot_check=yes is
    \o         recommended for possible improvement of convergence.
    \o
    \o
    \o
    \o =============================
    \o `pss': time = (0 s -> 600 ns)
    \o =============================
    \o
    \o Important parameter values in tstab integration:
    \o
    \o     start = 0 s
    \o     outputstart = 0 s
    \o     stop = 600 ns
    \o     period = 50 ns
    \o     step = 650 ps
    \o
    \o     maxstep = 2 ns
    \o
    \o     ic = all
    \o
    \o     useprevic = no
    \o
    \o     skipdc = no
    \o
    \o     reltol = 1e-03
    \o
    \o     abstol(V) = 100 uV
    \o
    \o     abstol(I) = 100 pA
    \o     temp = 27 C
    \o
    \o     tnom = 27 C
    \o
    \o     tempeffects = all
    \o
    \o     method = gear2only
    \o
    \o     lteratio = 3.5
    \o
    \o     relref = sigglobal
    \o
    \o     cmin = 0 F
    \o
    \o     gmin = 1 pS
    \o
    \o     rabsshort = 1 mOhm

    • Post Points: 20
  • Wed, Apr 10 2013 12:43 PM

    Re: ERROR (SPECTRE-7031): SST2 Error: No space left on device Reply

    Presumably the disk filled up or you exceeded your quota because you saved too many nodes - maybe you're saving all node voltages and with almost half a million nodes that's going to be a lot of data. 

    Be more selective about what signals you save from the simulator. 

    Regards,

    Andrew 

     

    • Post Points: 5
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Started by RFStuff at 10 Apr 2013 12:29 PM. Topic has 1 replies.