LDM version 6.6.0 released

[Steve Emmerson]

Mike,

Yes, an LDM system with many REQUEST entries will startup faster 
regardless of whether or not the downstream sites that request from it 
upgrade to 6.6.

Regards,
Steve Emmerson

Mike Voss wrote:
> Hi Steve,
> Will the startup performance be improved regardless of whether the down 
> stream sites upgrade to to 6.6? For example, if I have an LDM 6.6 
> machine feeding several LDM 6.4 machines, will I still derive the 
> benefit you mention? And or, vice versa, if I have LDM 6.6 machines 
> feeding from LDM 6.4 will that show the improvement? Just curious.
> 
> Thanks and Regards,
> -Mike
> 
> 
> At 02:20 PM 3/8/2007, Steve Emmerson wrote:
>> Dear LDM user,
>>
>> Version 6.6.0 of the LDM is now available from
>>
>>      http://www.unidata.ucar.edu/software/ldm
>>
>> or
>>
>>      ftp://ftp.unidata.ucar.edu/pub/ldm/ldm-6.6.0.tar.gz
>>
>> (Note the change in compression-format).
>>
>> The new feature in this release is the improved startup performance of
>> downstream LDM-s through the use of "last product received" files in the
>> LDM user's home-directory.  This feature will greatly improve the
>> startup performance of LDM systems with many REQUEST entries (such as in
>> the TIGGE and SCOOP projects).
>>
>> The complete release notes for this version are attached.
>>
>> Unless there's a crisis or I have a brainstorm, there will probably not
>> be much further LDM development for a while because of other demands on
>> my time.  So if you were waiting for things to settle down before
>> installing the latest LDM, then now might be a good time.  I'll
>> understand, however, if you wait a while to see if version 6.6.1 is
>> released.  :-)
>>
>> Questions or comments should be sent to <support-ldm at unidata.ucar.edu>.
>>
>> Regards,
>> Steve Emmerson
>> LDM Developer
>>
>> P.S.  Information on the TIGGE and SCOOP projects can be found at
>> <http://tigge.ucar.edu> and <http://scoop.sura.org>, respectively.
>>
>>
>>
>> Added a persistent-state file for a downstream LDM.  This file
>> saves the metadata of the last, successfully-received data-product
>> so that the next downstream LDM process that requests the same
>> data from the same source can start where the previous process
>> stopped.  The files reside in the LDM user's home-directory
>> and have the pattern ".*.info".  This increases the startup
>> performance of a downstream LDM and will greatly benefit LDM's
>> with many REQUEST entries.
>>
>> Changed format of distribution file from ".tar.Z" to ".tar.gz"
>> because the "compress" utility is not available on my development
>> workstation (due to IP restrictions) and the (now necessary)
>> "gunzip" utility appears to be ubiquitous.
>>
>> Corrected the "pqact" utility's determination of the month
>> associated with a data-product from the creation-time of
>> the data-product and the day-of-the-month field in the
>> product-identifier.
> 
> --------------------------
> Mike Voss
> Department of Meteorology
> San Jose State University
> One Washington Square
> San Jose, CA 95192-0104
> 
> 408.924.5204 voice
> 408.924.5191 fax