6 lines
972 B
Plaintext
6 lines
972 B
Plaintext
- implement full routing for CPU or GPU execution based on the (...)-device=cpu|gpu switches. The current --mersenne=bydivisor GPU flow appears to run every stage on the GPU and ignore switches such as --primes-device for the primality check.
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- investigate why the --mersenne=bydivisor GPU path runs out of host memory. Exceptions must remain visible.
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- Reimplement the GPU cycle heuristics for MersenneNumberIncrementalGpuTester and re-enable Scan_handles_various_prime_exponents once the device path is fixed.
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- Extend the GPU numeric type probe to cover proposed custom types such as GpuUInt256 and GpuUInt512 once their definitions are available so we can plan the wide-order heuristics on the device.
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- document the GPU by-divisor regressions introduced in commit cd1debe ("Various micro- and medium- optimizations"): the refactor dropped divisor-cycle caching, remainder stepper reuse, and honoring the cached cycle parameter so we can plan which pieces to restore.
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