Krazy Glew's Blog

Andy "Krazy" Glew is a computer architect, a long time poster on comp.arch ... and an evangelist of collaboration tools such as wikis, calendars, blogs, etc. Plus an occasional commentator on politics, taxes, and policy. Particularly the politics of multi-ethnic societies such as Quebec, my birthplace.

The content of this blog is my personal opinion. It is not that of my employer. See Disclaimer.

Photo credit: http://docs.google.com/View?id=dcxddbtr_23cg5thdfj

Thursday, June 23, 2011

cygwin startxwin problem with multiple displays

I use cygwin on my Windows PCs. Especially my tablet PC. AFAIK there is no equally good UNIX or Linux or Apple equivalent for a Microsoft Wi...

Sunday, June 19, 2011

A vocabulary of terms for memory operation combining

There are many different terms for the common optimization of memory operation combining or coalescing. See the discussions of the [[differ...

Difference between write combining and write coalescing

[[Write coalescing]] is the term some GPUs, notably AMD/ATI and Nvidia, use to describe how they, umm, combine or coalesce writes from diffe...

Wednesday, June 15, 2011

Write combining

http://semipublic.comp-arch.net/wiki/Write_combining#WC_policies Many processors have [[write combining]] support. The [[WC buffers]] and ...

Writethrough with write allocate versus no write allocate

http://semipublic.comp-arch.net/wiki/Writehrough_with_write_allocate_versus_no_write_allocate Write-through caches can be write allocate o...

Wednesday, May 18, 2011

Dynamic shifts

http://semipublic.comp-arch.net/wiki/Why_dynamic_shift_count_instructions_are_often_slower_than_constant_shift_count_instructions This es...

Sunday, May 15, 2011

ISO ACLs for Wiki; considering Drupal

I have long wanted ACLs for wikis, both at companies like Intel and AMD, and on comp-arch.net. I punted ion this when I set up comp-arch.n...

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Andy "Krazy" Glew

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