[Paraview] Too many open files
Robert Maynard
robert.maynard at kitware.com
Thu May 13 11:38:41 EDT 2010
For windows _setmaxstdio<http://msdn.microsoft.com/en-us/library/6e3b887c(v=vs.71).aspx>
could
be the solution to allow more than 512 open files per process.
On Thu, May 13, 2010 at 11:29 AM, Samuel Key <samuelkey at bresnan.net> wrote:
> Hi Carolyn,
>
> I was gently suggesting that you could solve the problem of "too many open
> files" by going to a datum format that required a smaller number of files,
> or don't ask ParaView to load data that you don't have a requirement (at the
> moment) to post-process. If that is not possible, then I suggest you look
> at your O/S.
>
> A long time ago (pre ParaView) I had a "too many open files" event. If I
> recall correctly, it was MS Windows that gave the message, but it could have
> been DEC's VMS, DEC's Ultrix, or Linux. In any event, most O/S's have a
> limit on the number of files that can be open at any one time. The trick is
> to locate where that number is stored and increase it. You can put "too many
> open files" in Google and, for example, get here
>
> http://www.patoche.org/LTT/kernel/00000128.html
>
> or here
>
>
> http://confluence.atlassian.com/display/CONF26/Fix+%27Too+many+open+files%27+error+on+Linux+by+increasing+filehandles
>
> You are probably going to learn more about System Administration than you
> wanted to learn.
>
> Good luck,
>
>
> Sam Key
>
> Carolyn Stancoff wrote:
>
> I can view 500 time steps. My problem is when it goes to time step 509.
> My guess is that there is a limit of 512 open files somewhere.
>
> Carolyn
>
> On Wed, May 12, 2010 at 1:59 PM, Samuel Key <samuelkey at bresnan.net>wrote:
>
>> Oops, here is the attachment.
>>
>>
>> Samuel Key wrote:
>>
>> Carolyn,
>>
>> I am not sure which EnSight format you are using. I have attached an
>> EnSight case-file that is typical for me and functions with only a small set
>> of files, but with a large number of time steps. In this format, each
>> cell/point variable has its own file; each file contains the data at all
>> time steps. I have used this EnSight binary format for at least 500 time
>> steps.
>>
>> Another aspect of the EnSight reader in ParaView allows you to load ("open
>> the files") for only those cell and/or point datum arrays that you wish to
>> view -- see the check marks just below the green "Apply" button. Only the
>> data with a check-mark is read; one may turn-off the checks by clicking on
>> them.
>>
>> Hope this helps,
>>
>> Sam Key
>>
>>
>>
>> Carolyn Stancoff wrote:
>>
>> I have data for 630 time steps in EnSight format. When I try to play the
>> data I get that there are too many open files (nothing after time step 509
>> is displayed). Is there something I can change in Windows or ParaView to
>> allow more open files? Since I currently have each time step data in its
>> own file, can I write all the data to a single file? Or do the files need
>> to stay open after they have been read?
>>
>> Thanks,
>>
>> Carolyn
>>
>> ------------------------------
>>
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>>
>>
>> FORMAT
>> type: ensight gold
>> GEOMETRY
>> model: 1 1 fmaego.data.geom change_coords_only
>> VARIABLE
>> vector per node: 1 1 Displacement fmaego.data.ndis
>> vector per node: 1 1 Velocity fmaego.data.nvel
>> vector per node: 1 1 Acceleration fmaego.data.nacc
>> scalar per element: 1 1 Material fmaego.data.emat
>> scalar per element: 1 1 Material-State fmaego.data.esta
>> scalar per element: 1 1 Pressure fmaego.data.eprs
>> scalar per element: 1 1 Bulk-Strain fmaego.data.elnv
>> scalar per element: 1 1 Strain-Energy-Density fmaego.data.esed
>> scalar per element: 1 1 Effective-Stress fmaego.data.edev
>> vector per element: 1 1 Stress*Vel fmaego.data.estv
>> tensor symm per element: 1 1 Stress fmaego.data.estr
>> TIME
>> time set: 1
>> number of steps: 201
>> time values: 5.196730760241E-07 1.002968963254E-04
>> 2.000741029179E-04 3.003708790416E-04 4.001478731634E-04
>> 5.004445399233E-04 6.002214859248E-04 7.005181261602E-04
>> 8.002952341828E-04 9.000724132358E-04 1.000369296886E-03
>> 1.100146514875E-03 1.200443352457E-03 1.300220421660E-03
>> 1.400517099910E-03 1.500294041644E-03 1.600071004277E-03
>> 1.700367727048E-03 1.800144863650E-03 1.900441750115E-03
>> 2.000218938720E-03 2.100515794906E-03 2.200292991238E-03
>> 2.300070197422E-03 2.400367051387E-03 2.500144229106E-03
>> 2.600441086479E-03 2.700218295098E-03 2.800515117326E-03
>> 2.900292164742E-03 3.000069177668E-03 3.100365821446E-03
>> 3.200142836239E-03 3.300439653783E-03 3.400216849596E-03
>> 3.500513718102E-03 3.600290917459E-03 3.700068111120E-03
>> 3.800364913407E-03 3.900141999835E-03 4.000438703894E-03
>> 4.100215731207E-03 4.200512517403E-03 4.300289711083E-03
>> 4.400066908828E-03 4.500363752591E-03 4.600140937096E-03
>> 4.700437810394E-03 4.800215011644E-03 4.900511836185E-03
>> 5.000288931712E-03 5.100066042243E-03 5.200362867868E-03
>> 5.300140072953E-03 5.400436946040E-03 5.500214116633E-03
>> 5.600510954474E-03 5.700288152063E-03 5.800065347829E-03
>> 5.900362163656E-03 6.000139259510E-03 6.100436004140E-03
>> 6.200213148723E-03 6.300510029835E-03 6.400287199732E-03
>> 6.500064273664E-03 6.600360972689E-03 6.700138070826E-03
>> 6.800434908687E-03 6.900212113630E-03 7.000509004257E-03
>> 7.100286216871E-03 7.200063369915E-03 7.300360096268E-03
>> 7.400137034301E-03 7.500433582155E-03 7.600210460185E-03
>> 7.700507027005E-03 7.800284008849E-03 7.900061107069E-03
>> 8.000357912640E-03 8.100135061104E-03 8.200431865296E-03
>> 8.300208895674E-03 8.400505512643E-03 8.500282424461E-03
>> 8.600059345256E-03 8.700356022798E-03 8.800133143587E-03
>> 8.900430027925E-03 9.000207204519E-03 9.100504044841E-03
>> 9.200281255239E-03 9.300058457784E-03 9.400355264674E-03
>> 9.500132330655E-03 9.600429097241E-03 9.700206244075E-03
>> 9.800503114836E-03 9.900280290909E-03 1.000005741673E-02
>> 1.010035422942E-02 1.020013139809E-02 1.030042827600E-02
>> 1.040020541528E-02 1.050050221218E-02 1.060027932137E-02
>> 1.070005646959E-02 1.080035334544E-02 1.090013051827E-02
>> 1.100042733019E-02 1.110020443054E-02 1.120050124054E-02
>> 1.130027844414E-02 1.140005564148E-02 1.150035251318E-02
>> 1.160012971438E-02 1.170042658322E-02 1.180020373272E-02
>> 1.190050045280E-02 1.200027742511E-02 1.210005438921E-02
>> 1.220035106839E-02 1.230012815590E-02 1.240042502046E-02
>> 1.250020221774E-02 1.260049909022E-02 1.270027629071E-02
>> 1.280005342482E-02 1.290035014500E-02 1.300012719102E-02
>> 1.310042391126E-02 1.320020101052E-02 1.330049788595E-02
>> 1.340027508749E-02 1.350005224313E-02 1.360034897969E-02
>> 1.370012609023E-02 1.380042296449E-02 1.390020018019E-02
>> 1.400049706763E-02 1.410027424655E-02 1.420005145602E-02
>> 1.430034823958E-02 1.440012531690E-02 1.450042196984E-02
>> 1.460019892685E-02 1.470049566145E-02 1.480027279565E-02
>> 1.490004999189E-02 1.500034686208E-02 1.510012406475E-02
>> 1.520042095940E-02 1.530019811375E-02 1.540049482781E-02
>> 1.550027181960E-02 1.560004880256E-02 1.570034547300E-02
>> 1.580012258155E-02 1.590041945894E-02 1.600019667267E-02
>> 1.610049356579E-02 1.620027073971E-02 1.630004778025E-02
>> 1.640034442828E-02 1.650012134021E-02 1.660041787724E-02
>> 1.670019484604E-02 1.680049156964E-02 1.690026865619E-02
>> 1.700004585962E-02 1.710034274974E-02 1.720011988040E-02
>> 1.730041665667E-02 1.740019371103E-02 1.750049033238E-02
>> 1.760026732293E-02 1.770004441988E-02 1.780034126212E-02
>> 1.790011845138E-02 1.800041523239E-02 1.810019233856E-02
>> 1.820048913913E-02 1.830026632915E-02 1.840004353665E-02
>> 1.850034041247E-02 1.860011761471E-02 1.870041449164E-02
>> 1.880019163406E-02 1.890048837065E-02 1.900026539316E-02
>> 1.910004238475E-02 1.920033911476E-02 1.930011627667E-02
>> 1.940041314536E-02 1.950019033952E-02 1.960048721190E-02
>> 1.970026440918E-02 1.980004160732E-02 1.990033842206E-02
>> 2.000011547959E-02
>> FILE
>> file set: 1
>> number of steps: 201
>>
>>
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
>
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>
>
--
Robert Maynard
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