Greetings, and thanks again for your feedback! Adam C Powell IV <[EMAIL PROTECTED]> writes:
> Hello Camm, > > This is an important topic, and you've raised a lot of very interesting > questions! > > Unfortunately, my last post exhausted my knowledge of the subject. I refer > you to my > source, which is Ben Collins' post to debian-mentors a week or so ago: > http://lists.debian.org/debian-mentors-0011/msg00230.html > Thanks for the reference! I'll check it out. > Camm Maguire wrote: > > > But fortunately, for > > all cases you mention above except the k6,k7,p2,p3, code compiled on > > one family (ev67, say) will run on ev4, though not optimally. > > I assumes this means there's no alpha asm involved? If there were, you'd get > illegal > instruction errors running some ev6+ code on ev5s, etc. > Then I stand corrected. Not knowing much about alpha, I assumed the instruction set was compatible. Goto-'s code is merged in the latest atlas developer trees, so it appears the _alpha_ev? have to be added to our problem list. Do you know what minimum processor is required to run Goto's code? > > In the case we're discussing here, code compiled on p3 will not run on > > p2,k6,k7. > > Argh. > > I guess this means there is some "Intel"-specific asm involved. > > In this case, has there been any mention of including some alpha asm in ATLAS? > Kazushige Goto's work in this area runs substantially faster (on the order of > 20-50%) > than ccc-compiled ATLAS, and comes *extremely* close to the theoretical > performance > of the alpha. It's all free, and available at > ftp://www.netstat.ne.jp/pub/Linux/Linux-Alpha-JP/BLAS/ . > Thanks for the reference, see above. Of course, one other solution for now is simply to disable the improved code, compile a '386' version for the distribution, and include a note for how the interested user could build from source on his/her box. This would be a pity, it seems, and has the additional complication that the same source tree needs to be instructed to build a general version on the auto-builders, and an optimal version for the user. Take care, > -Adam P. > > Welcome to the best software in the world today cafe! > > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] > > > -- Camm Maguire [EMAIL PROTECTED] ========================================================================== "The earth is but one country, and mankind its citizens." -- Baha'u'llah
