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"Can't create pipe" on call to spawn. [message #85229]

Wed, 17 July 2013 08:51

andrew.p.walsh
Messages: 4
Registered: July 2013

Junior Member

Hi All,

I've come across a bit of a bizarre problem:

I have a routine that loads data from ~10^6 individual files and partway through processing the list IDL stops being able to locate the files with file_search (I don't know the names of the files ahead of time).

It seems that the IDL session is locked out of the system completely, it can't locate and compile routines like read_ascii, can't connect to the X server to open graphics windows and I can't even retrieve a directory listing with

spawn, ls

or

$ls

This is where it returns "Can't create pipe."

Does anyone have any idea what's going on? I have version 8.2.1 on 64 bit linux (Ubuntu 12.04).

Andrew

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Re: "Can't create pipe" on call to spawn. [message #85230 is a reply to message #85229]

Wed, 17 July 2013 09:20

Nigel Wade
Messages: 286
Registered: March 1998

Senior Member

On 17/07/13 16:51, andrew.p.walsh@gmail.com wrote:
> Hi All,
>
> I've come across a bit of a bizarre problem:
>
> I have a routine that loads data from ~10^6 individual files and partway through processing the list IDL stops being able to locate the files with file_search (I don't know the names of the files ahead of time).
>
> It seems that the IDL session is locked out of the system completely, it can't locate and compile routines like read_ascii, can't connect to the X server to open graphics windows and I can't even retrieve a directory listing with
>
> spawn, ls
>
> or
>
> $ls
>
> This is where it returns "Can't create pipe."
>
> Does anyone have any idea what's going on? I have version 8.2.1 on 64 bit linux (Ubuntu 12.04).
>
> Andrew
>

You have probably exceeded the system defined, per-process, limit on open file descriptors (check out ulimit).

Are you sure that you are properly closing each file after you've finished with it, and allowing all pipes etc. to close?

--
Nigel Wade

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Re: "Can't create pipe" on call to spawn. [message #85234 is a reply to message #85230]

Thu, 18 July 2013 01:57

andrew.p.walsh
Messages: 4
Registered: July 2013

Junior Member

That was it, thanks!

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