6 Jan
2011
6 Jan
'11
10:36 a.m.
On Thu, Jan 6, 2011 at 04:01, Gianluca Meneghello <[email protected]>wrote:
When using ASM with different subdomains on the same process, is the order in which the domains are solved the same as the one in which they are stored in the IS array passed to PCASMSetLocalSubdomains()? I would be interested in controlling this in order to build a downstream marching smoother.
PCASM is "Additive" rather than multiplicative so there is no order. PCFieldSplit includes multiplicative and symmetric-multiplicative variants, but each subdomain ("split" in this context) is global which exposes less concurrency (subdomains can be empty on some processes so this only affects performance, not which Schwarz-like algorithms are implementable).