The latest version made available by AMD at http://developer.amd.com/acml.aspx is 3.0.1 The latest ebuild is sci-libs/acml-3.0.0 http://packages.gentoo.org/search/?sstring=acml
acml 3.1.0 is out too
(In reply to comment #1) > acml 3.1.0 is out too > woops, that's what I meant!
InCVS now