[netCDF #RBA-990925]: Clarification about NetCDF lib performance

Hello,

NetCDF is not natively thread-safe; youof c can use a multi-threaded 
application to write netCDF data, but you would need to manage thread safety 
above the netCDF layer. If you want true parallel I/O, you would need to look 
at the parallel-netcdf project (for netCDF3 data model and files) or use 
parallel HDF5 if you are using the netCDF4 data model and files.  The HDF5 
library handles the file I/O for netCDF4 files, and if it has parallel I/O 
capabilities then netCDF will use them automatically.

I hope this information helps, have a great day!

-Ward

> Hi,
> 
> We are integrating the NetCDF lib to write the weather data in to
> netcdf files.
> 
> We have multiple sources for which the data need to be written in separate
> files. Here, it is safe to assume that our application is receiving the
> data over network socket.
> 
> Here, I would like to know the performance of netcdf lib in writing the
> data to netcdf files to design my software. Do we need to have multi
> threaded application so as to continue receiving over socket and writing
> in to file simultaneously or single threaded application should be enough?
> 
> If the writing overhead is not much, single thread should work else we
> have to go for multi threaded approach.
> 
> Also, are there any performance parameters available while writing to
> netcdf file?
> 
> Thanks in Advance!
> 
> Regards,
> 
> Suresh Panara
> 
> 


Ticket Details
===================
Ticket ID: RBA-990925
Department: Support netCDF
Priority: Normal
Status: Closed
===================
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata 
inquiry tracking system and then made publicly available through the web.  If 
you do not want to have your interactions made available in this way, you must 
let us know in each email you send to us.