Hi Francis,
Il giorno Wed, 9 Feb 2011 09:38:49 +1100
Francis Markham fmark...@gmail.com ha scritto:
Is there a document anywhere specifying the best practices for
parallel writes to a GDAL raster? I have an embarrasingly parallel
problem that I would like to parallelise with MPI, but I'm not
Le mercredi 09 février 2011 09:59:02, Antonio Valentino a écrit :
Hi Francis,
Il giorno Wed, 9 Feb 2011 09:38:49 +1100
Francis Markham fmark...@gmail.com ha scritto:
Is there a document anywhere specifying the best practices for
parallel writes to a GDAL raster? I have an embarrasingly
Thanks for the feedback Antonio and Even, it is very helpful.
I probably should have specified that I want to do message passing across a
cluster using MPI, rather than shared memory multithreading. I'll do some
performance testing to see what the relative speeds of having workers send
their
Is there a document anywhere specifying the best practices for parallel
writes to a GDAL raster? I have an embarrasingly parallel problem that I
would like to parallelise with MPI, but I'm not sure what I am allowed to do
in parallel. I would like to assign blocks exclusively to worker threads
Le mardi 08 février 2011 23:38:49, Francis Markham a écrit :
Is there a document anywhere specifying the best practices for parallel
writes to a GDAL raster? I have an embarrasingly parallel problem that I
would like to parallelise with MPI, but I'm not sure what I am allowed to
do in
Ouch, I guess I'll be slicing and mosaicing, sending all my data across the
network, or looking for another IO library. Which approach would you
recommend? Are you aware if any of the major non-GDAL libraries for popular
formats (e.g. libgeotiff) support concurrent writes?
-Francis
On 9
On 11-02-08 05:58 PM, Francis Markham wrote:
Ouch, I guess I'll be slicing and mosaicing, sending all my data across the
network, or looking for another IO library. Which approach would you
recommend? Are you aware if any of the major non-GDAL libraries for popular
formats (e.g. libgeotiff)
Is there any way to disable the block cache altogether? Does setting the
cache size to zero work? And is there a way to do this from a python
script?
Cheers,
Francis
On 9 February 2011 10:40, Frank Warmerdam warmer...@pobox.com wrote:
So, with some care you could in theory write from
On 11-02-08 08:04 PM, Francis Markham wrote:
Is there any way to disable the block cache altogether?
Francis,
No, there is no way to disable the block cache altogether. For
specific drivers you could skip past the block cache by calling
GDALRasterBand::WriteBlock() but this may not work well
