Thanks Dennis. I had a feeling that this was the case, but thought I would at
least ask.
-Roy
On Nov 19, 2014, at 7:38 PM, Dennis Heimbigner <dmh@xxxxxxxx> wrote:
> Roy-
> we looked at something like this a while ago.
> One problem is at what level is it done:
> in netcdf library, in Linux kernel?
>
> If we do it in the netcdf library, then we
> in effect have an in-memory cache of files
> and as with any cache, we need to manage it.
> That means a purge policy.
>
> Also, doing it in the netcdf library will
> not automatically make it available to, say,
> the HDF5 library. For that to occur, it would
> have to be implemented in the linux kernel.
>
> If anyone has a good solution for this, I would
> welcome it.
>
> =Dennis Heimbigner
> Unidata
>
>
> Roy Mendelssohn - NOAA Federal wrote:
>> Hi All:
>> Netcdf now has the option of creating or reading a file entirely in memory,
>> a nice option to have. I am wondering if there is any way to do sort of the
>> inverse. Some web libraries allow for a pure binary download of a file into
>> memory, so what I have sitting there is essentially a binary image of the
>> netcdf file. Is there any way to open that image without writing to disk?
>> As an example, the R httr library allows this. I can for example download
>> to memory a netcdf file from ERDDAP, and if I then do a binary save in httr
>> and then read it back in using the ncdf4 package, it all works great. But
>> it would be even better if I could skip the extra steps, and “open” the
>> image in ncdf4 directly (ncdf4 btw can do whatever the netcdf libraries can
>> do, so it is a question of the base libraries).
>> Thanks,
>> -Roy **********************
>> "The contents of this message do not reflect any position of the U.S.
>> Government or NOAA."
>> **********************
>> Roy Mendelssohn
>> Supervisory Operations Research Analyst
>> NOAA/NMFS
>> Environmental Research Division
>> Southwest Fisheries Science Center
>> ***Note new address and phone***
>> 110 Shaffer Road
>> Santa Cruz, CA 95060
>> Phone: (831)-420-3666
>> Fax: (831) 420-3980
>> e-mail: Roy.Mendelssohn@xxxxxxxx www: http://www.pfeg.noaa.gov/
>> "Old age and treachery will overcome youth and skill."
>> "From those who have been given much, much will be expected" "the arc of the
>> moral universe is long, but it bends toward justice" -MLK Jr.
>> _______________________________________________
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>
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**********************
"The contents of this message do not reflect any position of the U.S.
Government or NOAA."
**********************
Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
***Note new address and phone***
110 Shaffer Road
Santa Cruz, CA 95060
Phone: (831)-420-3666
Fax: (831) 420-3980
e-mail: Roy.Mendelssohn@xxxxxxxx www: http://www.pfeg.noaa.gov/
"Old age and treachery will overcome youth and skill."
"From those who have been given much, much will be expected"
"the arc of the moral universe is long, but it bends toward justice" -MLK Jr.
