WIN GRADS 2.0.a7.oga.3 - Possible Bug

[Mark Sponsler]

Hi Arlindo, 

I tried again to get the 'ls' command to work in Grads 2 without sucess.   



I've beleive your statement earlier about there being some conflict beteween multiple versions of Cygwin to be correct.  I just can't seem to figure out where the conflict is occurring. 



I have 3 version of Grads installed (1.8, 1.9 and 2.0) on the workstation.  I deleted all reference to Grads from the Path environment variable (and most any other applic ation other than the basic windows directories), and also renamed Autoexec.bat (it had a reference to the old regrid function). Then did a cold reboot. Plugged in the flash drive with grads 2 on it and started Grads from there, but got not response from  ! ls <cr>. 



I then renamed the actual top directories of those 3 versions of grads so even if there was some buried reference, the code would not be found. Restarted .  Still no luck with the ! ls command. 



Any other suggestions?      

Thanks, 
Mark 

----- Original Message ----- 
From: "Arlindo da Silva" <dasilva at alum.mit.edu> 
To: "Mark Sponsler" <msponsler at comcast.net> 
Cc: "gradsusr" <GRADSUSR at list.cineca.it> 
Sent: Wednesday, January 27, 2010 8:59:01 PM GMT -08:00 US/Canada Pacific 
Subject: Re: WIN GRADS 2.0.a7.oga.3 - Possible Bug 

Mark, 


  Because I am always trying to get a relocatable solution I never make use of the Windows registry. The only system change I make (with the user's permission) is to add something to the path. 


  Now, when you start a version of grads cygwin sets aside a chunk of shared memory for the POSIX emulation. Since v1.9 and v2.0 uses different versions o cygwin, running both versions without an intervening reboot could cause problems as these shared memory chunks could be inconsistent. So, in the machine where you are having problems, do a reboot and then try running v2.0 without having run v1.9. Any luck? 


  Arlindo    





On Wed, Jan 27, 2010 at 10:45 PM, Mark Sponsler < msponsler at comcast.net > wrote: 






Hi Arlindo, 

Another finding: 



I have both the 1.9 and the 2.0 Grads installtions on 2 different flash drives. 



I went to a computer that has never had Grads installed, plugged in the 1.9 flash drive and fired up grads, then ran 

! ls  

and sucessfully received a directory listing.  



Did the same thing with the Grads 2.0 flash drive (on the same computer) and also received a directory liating. 



To me that suggests that indeed there is some sort of conflict occurring on the machine that has previous grads installations. 



I went back to the machine that is having problems and pulled wgrib out of the path too (along with all grads path variables). 



Plugged in the 1.9 flashdrive and got a Directory list, but still no luck with the 2.0 flash drive. 



I also have version 1.8 installed on that machine and am thinking that maybe when I installed it I used the installer version instead of the zip installtion, and that maybe some remnants are still lurking in the registry that might be causing a conflict.  That's purely a guess though.  Not even sure that would make a difference.  



Any other suggestions?     



Thanks, 
Mark 

----- Original Message ----- 
From: "Arlindo da Silva" < dasilva at alum.mit.edu > 
To: "Mark Sponsler" < msponsler at comcast.net > 
Cc: "gradsusr" < GRADSUSR at list.cineca.it > 
Sent: Wednesday, January 27, 2010 10:42:35 AM GMT -08:00 US/Canada Pacific 
Subject: Re: WIN GRADS 2.0.a7.oga.3 - Possible Bug 







On Mon, Jan 25, 2010 at 3:37 PM, Mark Sponsler < msponsler at comcast.net > wrote: 






Hi Arlindo, 

Interesting..... 



If I start Grads then type in: 

! ls  <cr> 



Grads just hangs. No answer set is returned.  I presume a directory list should appear. But instead nothing.... 




Hmm... It works OK on my Windows platform. Anybody out there having similar problems on Windows? 


I wonder if your GrADS v1.9 installation is not conflicting with your GrADS v2. Do you explicitly set any GrADS environment (GADDIR, GASCRP, etc.)? Is the  v1.9 bin/ directory on your PATH? Did you use the .exe or .zip version of the superpack?   


     Arlindo 

-- 
Arlindo da Silva 
dasilva at alum.mit.edu 



-- 
Arlindo da Silva 
dasilva at alum.mit.edu 
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