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Old   September 15, 2012, 13:08
Default Error writing compressed file during auto save
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M. Zalzala
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Hello everyone, I'm having a problem when using the autosave function in Fluent v13. I have it installed on my laptop (Vista), and the calculations run fine, but the program stops and gives me the error when it does auto save saying

Error: error writing compressed file
Error Object: #f

Any suggestions as to why this is happening and what the solution is? I would really appreciate it. Thanks!
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Old   September 17, 2012, 05:16
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Hi. It could be due to the path root name. e.g. if the folder name where your are working has a 'strange' character, like ?,!,",ñ,etc. try to rename your folders. Hope this help

Regards
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Old   September 17, 2012, 08:40
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Marion
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Hi,

It also happens when your hard drive is full, or if you don't have the correct rights on the folder.

Marion.
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Old   September 17, 2012, 11:16
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Also, are you writing to a local disk or server? This has caused me angst in the past.
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Old   September 18, 2012, 10:31
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M. Zalzala
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Thanks for the replies. It's not a new file, just a new version of Fluent (upgraded from 12) and I'm on a laptop now with admin account on Vista. Working dir is my flash drive (G and so is my saving location. No funny characters in the directory (except underscores). I have tried changing my save location to D:drive, but no difference.

This is what appears in the pop up box
Error writing "| gzip -2cfv > J:\MZ\turbine_closed_files\dp0\FLU-2\Fluent\SYS-3-01205.cas.gz".
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Last edited by mzalzala; September 18, 2012 at 11:04.
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Old   January 21, 2014, 11:24
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ashesh babu timilsina
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I am also facing the same problem. If any one has found solution to this problem then please help...
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Old   January 23, 2014, 20:36
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Did you run Fluent in parallel? In my experience some user created geometry (points, planes, etc.) could cause problem in parallel mode. Try cleaning those geometry and rerun. You should also try to write the file uncompressed to see if it helps to avoid the error.
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Old   February 19, 2014, 01:29
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Sneha Maria
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Hi
I am getting the error too...

Error writing "| gzip -2cfv > C:\Users\IITm\Documents\sneha_trial2_files\dp0\FFF \Fluent\FFF.1-24-00600.cas.gz".

i am using 'series' only. And the drive doesn't seem to be full. And no spl characters are involved. the calculations were gng fine... but in half way, I got this error. plz help.
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Old   February 19, 2014, 09:27
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François Grégoire
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By 'series' you mean serial mode? The error message only has 1 line?
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Old   February 20, 2014, 06:31
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Sneha Maria
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Ya ya ... That line followed by
Error Object: #f
But i think i ve got the solution ... Will get back with it once I am sure it works...
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Old   February 24, 2014, 01:25
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Power options setting in the PC should be changed to overcome this error. Set 'put computer to sleep' as 'never', and then in 'change advanced power settings', click on 'hard disk' and set 'turn off hard disk after' to 'never'. Also ensure that in the 'sleep' option, 'sleep after', 'allow hybrid sleep', and 'hibernate after' are set as 'never' ...
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Old   November 16, 2014, 02:07
Default gzip error
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Kalasagarreddi
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Even I have got the same error as gzip-2cfv while running supersonic flows in fluent.Can any one suggest me regarding this
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Old   November 25, 2014, 12:53
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Quote:
Originally Posted by Sneha William View Post
Power options setting in the PC should be changed to overcome this error. Set 'put computer to sleep' as 'never', and then in 'change advanced power settings', click on 'hard disk' and set 'turn off hard disk after' to 'never'. Also ensure that in the 'sleep' option, 'sleep after', 'allow hybrid sleep', and 'hibernate after' are set as 'never' ...
It helped me......
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Old   December 7, 2015, 20:12
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I am facing the same problem and inspite of changing power settings as mentioned earlier, I am not able to get rid of this error.
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Old   December 9, 2015, 15:17
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Lucky Tran
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Quote:
Originally Posted by deoko View Post
I am facing the same problem and inspite of changing power settings as mentioned earlier, I am not able to get rid of this error.
Do you have a problem with saving in general or autosave?
The power settings turns off the hard disk after # minutes so that Fluent cannot write to the disk and hence throws the error during a simulation. If you don't have an autosave problem then the power settings don't make a difference. If you're saving over a network drive then make sure your network doesn't go to sleep.

Check to make sure you have write permissions etc in that directory and that your disk is not full.

And try saving uncompressed files to see if you still have the same issue (usually the problem isn't because of the compression so normally you do have the same problem).
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Old   January 15, 2016, 09:17
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Moustafa Raafat Shousha
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I've encountered the same problem when i tried to calculate. When i tried to close Fluent the same problem faced me..

Error: Error writing compressed file "FFF.1-Setup-Output.cas.gz"
Error Object: #f

I solved the problem by the following procedure;
1. I had to force Fluent to stop (Task manager >Select (Fluent) > End Task)
2. 'Archive'/'Save As' the project from the workbench to other directory and run Fluent from this directory.
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Old   June 9, 2016, 02:50
Default Error in Fluent15
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Naveen
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i got error in writing compress file

as follow

Error: Error writing compressed file "FFF-Setup-Output.cas.gz"

Error: Error writing compressed file
Error Object: #f

Error: Error writing "| gzip -2cf > FFF-Setup-Output.cas.gz".
Error Object: #f


PLZ give me solution

Thankyou
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Old   August 13, 2016, 08:47
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cfduser
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did u get your problem solve. i am facing same problem??
plz. help...
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Old   August 13, 2016, 08:51
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"Error writing compressed file "FFF.1-1-00000.cas.gz"


i am facing this error while running simulation
plz. help
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Old   August 22, 2016, 21:51
Default Found solution to error writing gzip
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Jacob Daly
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Hey guys,

So all of the above solutions did not work for me but I found a fix!!!
I think this could be an issue with people on windows 10 but not sure.
Basically i realized that my gzip.exe was also crashing when I recieved the error, so i went into the fluent folder and found the gzip.exe and did a simple test to see if it would work in cmd. Basically i tried to gzip a text file and found that it crashed!! Yureka! So this told me that the gzip.exe file itself was corrupt or not compatible with windows.

So I went to: http://www.gzip.org/gzip124xN.zip
Got the new gzip.exe and replaced this one with the one installed in my ansys folder at C:\Program Files\ANSYS Inc\v170\fluent\ntbin\win64 and overwrote the gzip.exe.

Now everything works!!!
If this helped you, please consider checking out and subscribing to my youtube channel at:
www.youtube.com/user/drdalyo
I have some video tutorials in CFD,

Regards
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