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Re: get_lun & free_lun [message #89337 is a reply to message #89335]

Tue, 19 August 2014 10:24

markb77
Messages: 217
Registered: July 2006

Senior Member

On Tuesday, August 19, 2014 6:13:17 PM UTC+2, Yngvar Larsen wrote:
> On Tuesday, 19 August 2014 14:02:05 UTC+2, superchromix wrote:
>
>> I just noticed that get_lun and free_lun are limited to unit numbers 100-128. That means an IDL application could have access to (at maximum) 29 files simultaneously.
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>> Is there any way around this, other than hard-coding logical unit numbers into your code?
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> 1) Use idl_idlbridge. The new idl "child processes" get their own separate set of LUNs (but possibly limited by your OS: see eg "ulimit -n" and "sysctl -n kernel.maxfiles" on a linux system)
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> 2) Close your files as soon as possible after you finish reading/writing what you need. (In what scenario do you need to keep more than 29 files open at the same time?)
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> --
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> Yngvar

Thanks for the tip about the IDL_IDLBridge - I'm glad that's the case. I was thinking of a scenario where 5 instances of an application are running simultaneously.. it wouldn't be unreasonable for each of those applications to have 5 files open...
Mark

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[Message index]

		get_lun & free_lun By: markb77 on Tue, 19 August 2014 05:02
		Re: get_lun & free_lun By: Russell Ryan on Tue, 19 August 2014 08:32
		Re: get_lun & free_lun By: Yngvar Larsen on Tue, 19 August 2014 09:13
		Re: get_lun & free_lun By: markb77 on Tue, 19 August 2014 10:24

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