Date: Fri, 4 Oct 2013 06:32:58 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: AMD GPU documentation (was: Daniel's weekly report #15) Lukas, Daniel - On Thu, Oct 03, 2013 at 06:31:14PM +0200, Lukas Odzioba wrote: > I have two ideas at the moment: > 1) can you split binary on parts using definitions in this header: > http://www.multi2sim.org/svn/multi2sim/trunk/src/arch/southern-islands/asm/bin-file.h > > I am curious how much of that match the real format. > > 2) Since CAL has separated compilation and linking phases, maybe we > can somehow do something like pathing between those phases. > You probably saw this: > http://developer.amd.com/wordpress/media/2012/10/AMD_CAL_Programming_Guide_v2.0.pdf BTW, speaking of AMD documentation on Southern Islands GPUs, these PDFs might be relevant to the project as well: http://www.x.org/docs/AMD/si_programming_guide_v2.pdf http://www.x.org/docs/AMD/SI_3D_registers.pdf In particular, page 165+ in SI_3D_registers.pdf describes "Shared Program Registers", which includes things such as "Number of VGPRs, granularity 4. Range is from 0-63 allocating 4, 8, 12, ... 256" - a certain 6-bit value at a certain address (memory-mapped register?) This might answer, negatively, my question on whether we can go beyond 256 VGPRs for a single work-item. Alexander
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