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Exploit concurrency of integer and floating point operations #38

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unzvfu opened this issue Mar 21, 2020 · 0 comments
Open

Exploit concurrency of integer and floating point operations #38

unzvfu opened this issue Mar 21, 2020 · 0 comments
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unzvfu commented Mar 21, 2020

In the section entitled "Integer vs. Floating-Point Operations in GPUs" of this article, they claim that

Turing moves to concurrent execution of FP32 and INT32 operations, whereas Pascal would suffer a pipeline stall when an INT operation had to be calculated. Now, rather than stall the FPUs to allow a single INT operation to execute, they can execute simultaneously. This is allowed by independent datapaths for both the integer and floating-point units.

This could be exploited by having part of a fixnum stored with integer base and part with float base. Or interleave calculations on two fixnums, one with integer base and one with float base.

@unzvfu unzvfu self-assigned this Mar 21, 2020
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