Re: MonetDB: default - allow fixed number of partitions using --set ...
On 02-12-2012 11:51:30 +0100, Niels Nes wrote:
Changeset: 6e166ce6744e for MonetDB URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=6e166ce6744e Modified Files: gdk/gdk_utils.c gdk/gdk_utils.h monetdb5/optimizer/opt_mitosis.c Branch: default Log Message:
allow fixed number of partitions using --set mito_parts=?
isn't this the same as --forcemito + gdk_nr_threads=?
On Sun, Dec 02, 2012 at 12:03:54PM +0100, Fabian Groffen wrote:
On 02-12-2012 11:51:30 +0100, Niels Nes wrote:
Changeset: 6e166ce6744e for MonetDB URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=6e166ce6744e Modified Files: gdk/gdk_utils.c gdk/gdk_utils.h monetdb5/optimizer/opt_mitosis.c Branch: default Log Message:
allow fixed number of partitions using --set mito_parts=?
isn't this the same as --forcemito + gdk_nr_threads=?
no. That sets the number of threads and for small table still enables mitosis. But this allows setting the number of created partitions. Its a hack to experiment and test more optimal (nr) of paritions and/or partition sizes.
Niels
-- Fabian Groffen fabian@monetdb.org column-store pioneer http://www.monetdb.org/Home
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participants (2)
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Fabian Groffen
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Niels Nes