пятница, 11 сентября 2026 г.

shrinking holes in SASS allocated registers

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In my previous post I discovered that SASS register allocation can have holes - non-contiguous register indices allocated to a function whe...
понедельник, 31 августа 2026 г.

Cyclomatic complexity of SASS code

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Many algorithms of my SASS optimizer work with code blocks. So I decided to collect some metrics about blocks, resources usage per block/fu...
четверг, 20 августа 2026 г.

parser of PTX instructions

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A couple of facts to start things off From official "Inline PTX Assembly in CUDA": The compiler front end does not parse the asm(...
пятница, 7 августа 2026 г.

optimization of SASS stall counts, part 2

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In part 1 I suggested that "native" latency tables are too conservative and can be relaxed for some instructions. Indeed, let...
среда, 22 июля 2026 г.

optimization of SASS stall counts

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Optimal instructions scheduling is NP-hard task. For this reason almost all compilers implement metaheuristic methods like list scheduling/G...
среда, 1 июля 2026 г.

identification of const bank0 params

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Official documentation doesn't disclose ConstBank0 ( c[0x0] ) memory layout used at the SASS level for kernel arguments and special regi...
вторник, 23 июня 2026 г.

RE of PTX grammar from ptxas, part 4

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Parts 1 , 2 & 3 First of all, it should be noted that the mask of instruction attributes has size 20 bytes, so I updated dump for them...