Hi

I would recommend to run nominatim on your own machine. Even a laptop will have enough power to handle Switzerland, if you have swap (which the ec2 don't have). If you then want to make some web service available for others to test, make the import on your own machine, make a psql dump and upload it. I would argue that for anything beyond that, you need a real server. Probably cheaper than this cloud stuff with enough power.

Datendelphin

On Sun, 22 Jul 2012 19:31:33 +0200, Gabriel Rossetti wrote:
On 07/20/2012 08:45 PM, datendelphin wrote:

On 18.07.2012 00:17, Gabriel Rossetti wrote:

/opt/Nominatim/osm2pgsql/osm2pgsql -lsc -O gazetteer --hstore -C
84 -d nominatim /home/ubuntu/tmp/switzerland.osm.bz2
Using projection SRS 4326 (Latlong)
NOTICE: table "place" does not exist, skipping
NOTICE: type "keyvalue" does not exist, skipping
NOTICE: type "wordscore" does not exist, skipping
NOTICE: type "stringlanguagetype" does not exist, skipping
NOTICE: type "keyvaluetype" does not exist, skipping
NOTICE: function get_connected_ways(pg_catalog.int4[]) does not
exist, skipping
Allocating memory for dense node cache
Allocating dense node cache in one big chunk
Allocating memory for sparse node cache
Sharing dense sparse
Node-cache: cache=84MB, maxblocks=10753*8192, allocation
method=11
Mid: pgsql, scale=10000000 cache=84
Setting up table: planet_osm_nodes
NOTICE: table "planet_osm_nodes" does not exist, skipping
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index
"planet_osm_nodes_pkey" for table "planet_osm_nodes"
Setting up table: planet_osm_ways
NOTICE: table "planet_osm_ways" does not exist, skipping
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index
"planet_osm_ways_pkey" for table "planet_osm_ways"
Setting up table: planet_osm_rels
NOTICE: table "planet_osm_rels" does not exist, skipping
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index
"planet_osm_rels_pkey" for table "planet_osm_rels"

Reading in file: /home/ubuntu/tmp/switzerland.osm.bz2
Segmentation fault (core dumped)
ERROR: DB Error: no such table
DB Error: no such table
Hi

So the problem above arises from a failed allocation. Osm2pgsql
allocates 1GB of memory (hard coded, see node-ram-cache.c:390) which
is not checked if the allocation succeeded.

So that means for you: this ec2 instance has just too few memory
(only 600MB in total in the micro incarnation). There is the
osm2pgsql option --cache-strategy sparse, with which it works. But
that is not supported with the setup.php script (you could easily
add this option in setup.php on line 129, if you want to use it on
the tiny ec2)

And I certainly can not recommend running nominatim on Amazons
cloud computing. Nominatim is too demanding with I/O and caching and
all to run on that infrastructure.

Hope that explains it for you, even if it won't help you too much.

Datendelphin

 Hi Datendelphin,

 Thanks for looking into this. I see, I was using the Tiny version of
their VMs since they are free, so that I can test and dev on them
without being charged an arm and a leg. I will take into account what
you said and see if I can find something else, is there any cloud
service you would recommend for this? Again, than you for looking into
this and finding the issue.

 Thanks,
 Gabriel


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